[cig-commits] r21056 - in short/3D/PyLith/branches/v1.7-trunk: libsrc/pylith libsrc/pylith/friction modulesrc/friction pylith pylith/friction unittests/libtests/friction unittests/libtests/friction/data unittests/pytests/friction

brad at geodynamics.org brad at geodynamics.org
Mon Nov 19 17:52:16 PST 2012


Author: brad
Date: 2012-11-19 17:52:16 -0800 (Mon, 19 Nov 2012)
New Revision: 21056

Added:
   short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/SlipWeakeningStress.cc
   short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/SlipWeakeningStress.hh
   short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/SlipWeakeningStress.i
   short/3D/PyLith/branches/v1.7-trunk/pylith/friction/SlipWeakeningStress.py
   short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestSlipWeakeningStress.cc
   short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestSlipWeakeningStress.hh
   short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningStressData.cc
   short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningStressData.hh
   short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/TestSlipWeakeningStress.py
Modified:
   short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/Makefile.am
   short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/Makefile.am
   short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/frictionfwd.hh
   short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/Makefile.am
   short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/friction.i
   short/3D/PyLith/branches/v1.7-trunk/pylith/Makefile.am
   short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/Makefile.am
   short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestFrictionModel.cc
   short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningTimeData.hh
   short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/Makefile.am
   short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/testfriction.py
Log:
Added SlipWeakeningStress for stress-based slip-weakening friction model (includes forced weakening with time for nucleation).

Modified: short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/Makefile.am
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/Makefile.am	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/Makefile.am	2012-11-20 01:52:16 UTC (rev 21056)
@@ -105,6 +105,7 @@
 	friction/StaticFriction.cc \
 	friction/SlipWeakening.cc \
 	friction/SlipWeakeningTime.cc \
+	friction/SlipWeakeningStress.cc \
 	friction/RateStateAgeing.cc \
 	friction/TimeWeakening.cc \
 	materials/Metadata.cc \

Modified: short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/Makefile.am
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/Makefile.am	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/Makefile.am	2012-11-20 01:52:16 UTC (rev 21056)
@@ -25,6 +25,7 @@
 	StaticFriction.hh \
 	SlipWeakening.hh \
 	SlipWeakeningTime.hh \
+	SlipWeakeningStress.hh \
 	RateStateAgeing.hh \
 	TimeWeakening.hh \
 	frictionfwd.hh

Added: short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/SlipWeakeningStress.cc
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/SlipWeakeningStress.cc	                        (rev 0)
+++ short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/SlipWeakeningStress.cc	2012-11-20 01:52:16 UTC (rev 21056)
@@ -0,0 +1,332 @@
+// -*- C++ -*-
+//
+// ----------------------------------------------------------------------
+//
+// Brad T. Aagaard, U.S. Geological Survey
+// Charles A. Williams, GNS Science
+// Matthew G. Knepley, University of Chicago
+//
+// This code was developed as part of the Computational Infrastructure
+// for Geodynamics (http://geodynamics.org).
+//
+// Copyright (c) 2010-2011 University of California, Davis
+//
+// See COPYING for license information.
+//
+// ----------------------------------------------------------------------
+//
+
+#include <portinfo>
+
+#include "SlipWeakeningStress.hh" // implementation of object methods
+
+#include "pylith/materials/Metadata.hh" // USES Metadata
+
+#include "pylith/utils/array.hh" // USES scalar_array
+#include "pylith/utils/constdefs.h" // USES MAXSCALAR
+
+#include "spatialdata/units/Nondimensional.hh" // USES Nondimensional
+
+#include "petsc.h" // USES PetscLogFlops
+
+#include <cassert> // USES assert()
+#include <sstream> // USES std::ostringstream
+#include <stdexcept> // USES std::runtime_error
+
+// ----------------------------------------------------------------------
+namespace pylith {
+  namespace friction {
+    namespace _SlipWeakeningStress {
+
+      // Number of physical properties.
+      const int numProperties = 4;
+
+      // Physical properties.
+      const pylith::materials::Metadata::ParamDescription properties[4] = {
+	{ "static_stress", 1, pylith::topology::FieldBase::SCALAR },
+	{ "dynamic_stress", 1, pylith::topology::FieldBase::SCALAR },
+        { "slip_weakening_parameter", 1, pylith::topology::FieldBase::SCALAR },
+	{ "weakening_time", 1, pylith::topology::FieldBase::SCALAR },
+      };
+
+      // Number of State Variables.
+      const int numStateVars = 2;
+
+      // State Variables.
+      const pylith::materials::Metadata::ParamDescription stateVars[] = {
+	{ "cumulative_slip", 1, pylith::topology::FieldBase::SCALAR },
+	{ "previous_slip", 1, pylith::topology::FieldBase::SCALAR },
+      };
+
+      // Values expected in spatial database
+      const int numDBProperties = 4;
+      const char* dbProperties[4] = { "static-stress",
+				      "dynamic-stress",
+				      "slip-weakening-parameter",
+				      "weakening-time",
+      };
+
+      const int numDBStateVars = 2;
+      const char* dbStateVars[2] = { "cumulative-slip",
+				     "previous-slip",
+      };      
+      
+    } // _SlipWeakeningStress
+  } // friction
+} // pylith
+
+// Indices of physical properties
+const int pylith::friction::SlipWeakeningStress::p_stressStatic = 0;
+const int pylith::friction::SlipWeakeningStress::p_stressDyn = 
+  pylith::friction::SlipWeakeningStress::p_stressStatic + 1;
+const int pylith::friction::SlipWeakeningStress::p_d0 = 
+  pylith::friction::SlipWeakeningStress::p_stressDyn + 1;
+const int pylith::friction::SlipWeakeningStress::p_weaktime =
+  pylith::friction::SlipWeakeningStress::p_d0 + 1;
+
+// Indices of database values (order must match dbProperties)
+const int pylith::friction::SlipWeakeningStress::db_stressStatic = 0;
+const int pylith::friction::SlipWeakeningStress::db_stressDyn = 
+  pylith::friction::SlipWeakeningStress::db_stressStatic + 1;
+const int pylith::friction::SlipWeakeningStress::db_d0 = 
+  pylith::friction::SlipWeakeningStress::db_stressDyn + 1;
+const int pylith::friction::SlipWeakeningStress::db_weaktime =
+  pylith::friction::SlipWeakeningStress::db_d0 + 1;
+
+// Indices of state variables.
+const int pylith::friction::SlipWeakeningStress::s_slipCum = 0;
+const int pylith::friction::SlipWeakeningStress::s_slipPrev = 
+  pylith::friction::SlipWeakeningStress::s_slipCum + 1;
+
+// Indices of database values (order must match dbProperties)
+const int pylith::friction::SlipWeakeningStress::db_slipCum = 0;
+const int pylith::friction::SlipWeakeningStress::db_slipPrev = 
+  pylith::friction::SlipWeakeningStress::db_slipCum + 1;
+
+// ----------------------------------------------------------------------
+// Default constructor.
+pylith::friction::SlipWeakeningStress::SlipWeakeningStress(void) :
+  FrictionModel(materials::Metadata(_SlipWeakeningStress::properties,
+				    _SlipWeakeningStress::numProperties,
+				    _SlipWeakeningStress::dbProperties,
+				    _SlipWeakeningStress::numDBProperties,
+				    _SlipWeakeningStress::stateVars,
+				    _SlipWeakeningStress::numStateVars,
+				    _SlipWeakeningStress::dbStateVars,
+				    _SlipWeakeningStress::numDBStateVars))
+{ // constructor
+} // constructor
+
+// ----------------------------------------------------------------------
+// Destructor.
+pylith::friction::SlipWeakeningStress::~SlipWeakeningStress(void)
+{ // destructor
+} // destructor
+
+// ----------------------------------------------------------------------
+// Compute properties from values in spatial database.
+void
+pylith::friction::SlipWeakeningStress::_dbToProperties(PylithScalar* const propValues,
+						       const scalar_array& dbValues) const
+{ // _dbToProperties
+  assert(propValues);
+  const int numDBValues = dbValues.size();
+  assert(_SlipWeakeningStress::numDBProperties == numDBValues);
+
+  const PylithScalar db_static = dbValues[db_stressStatic];
+  const PylithScalar db_dyn = dbValues[db_stressDyn];
+  const PylithScalar db_do = dbValues[db_d0];
+  const PylithScalar db_t = dbValues[db_weaktime];
+
+  if (db_static < 0.0) {
+    std::ostringstream msg;
+    msg << "Spatial database returned negative value for static stress.\n"
+	<< "static stress: " << db_static << "\n";
+    throw std::runtime_error(msg.str());
+  } // if
+
+  if (db_dyn < 0.0) {
+    std::ostringstream msg;
+    msg << "Spatial database returned negative value for dynamic stress.\n"
+	<< "dynamic stress: " << db_dyn << "\n";
+    throw std::runtime_error(msg.str());
+  } // if
+
+  if (db_d0 <= 0.0) {
+    std::ostringstream msg;
+    msg << "Spatial database returned nonpositive value for slip weakening parameter.\n"
+	<< "slip weakening parameter: " << db_d0 << "\n";
+    throw std::runtime_error(msg.str());
+  } // if
+
+  if (db_t < 0.0) {
+    std::ostringstream msg;
+    msg << "Spatial database returned negative value for weakening time.\n"
+	<< "weakening time: " << db_t << "\n";
+    throw std::runtime_error(msg.str());
+  } // if
+
+  propValues[p_stressStatic] = db_static;
+  propValues[p_stressDyn] = db_dyn;
+  propValues[p_d0] = db_do;
+  propValues[p_weaktime] = db_t;
+
+} // _dbToProperties
+
+// ----------------------------------------------------------------------
+// Nondimensionalize properties.
+void
+pylith::friction::SlipWeakeningStress::_nondimProperties(PylithScalar* const values,
+						    const int nvalues) const
+{ // _nondimProperties
+  assert(_normalizer);
+  assert(values);
+  assert(nvalues == _SlipWeakeningStress::numProperties);
+
+  const PylithScalar lengthScale = _normalizer->lengthScale();
+  const PylithScalar pressureScale = _normalizer->pressureScale();
+  const PylithScalar timeScale = _normalizer->timeScale();
+
+  values[p_d0] /= lengthScale;
+  values[p_stressStatic] /= pressureScale;
+  values[p_stressDyn] /= pressureScale;
+  values[p_weaktime] /= timeScale;
+} // _nondimProperties
+
+// ----------------------------------------------------------------------
+// Dimensionalize properties.
+void
+pylith::friction::SlipWeakeningStress::_dimProperties(PylithScalar* const values,
+						      const int nvalues) const
+{ // _dimProperties
+  assert(_normalizer);
+  assert(values);
+  assert(nvalues == _SlipWeakeningStress::numProperties);
+
+  const PylithScalar lengthScale = _normalizer->lengthScale();
+  const PylithScalar pressureScale = _normalizer->pressureScale();
+  const PylithScalar timeScale = _normalizer->timeScale();
+
+  values[p_d0] *= lengthScale;
+  values[p_stressStatic] *= pressureScale;
+  values[p_stressDyn] *= pressureScale;
+  values[p_weaktime] *= timeScale;
+} // _dimProperties
+
+// ----------------------------------------------------------------------
+// Compute state variables from values in spatial database.
+void
+pylith::friction::SlipWeakeningStress::_dbToStateVars(PylithScalar* const stateValues,
+						      const scalar_array& dbValues) const
+{ // _dbToStateVars
+  assert(stateValues);
+  const int numDBValues = dbValues.size();
+  assert(_SlipWeakeningStress::numDBStateVars == numDBValues);
+
+  const PylithScalar cumulativeSlip = dbValues[db_slipCum];
+  const PylithScalar previousSlip = dbValues[db_slipPrev];
+ 
+  stateValues[s_slipCum] = cumulativeSlip;
+  stateValues[s_slipPrev] = previousSlip;
+} // _dbToStateVars
+
+// ----------------------------------------------------------------------
+// Nondimensionalize state variables.
+void
+pylith::friction::SlipWeakeningStress::_nondimStateVars(PylithScalar* const values,
+							const int nvalues) const
+{ // _nondimStateVars
+  assert(_normalizer);
+  assert(values);
+  assert(nvalues == _SlipWeakeningStress::numStateVars);
+
+  const PylithScalar lengthScale = _normalizer->lengthScale();
+
+  values[s_slipCum] /= lengthScale;
+  values[s_slipPrev] /= lengthScale;
+} // _nondimStateVars
+
+// ----------------------------------------------------------------------
+// Dimensionalize state variables.
+void
+pylith::friction::SlipWeakeningStress::_dimStateVars(PylithScalar* const values,
+					       const int nvalues) const
+{ // _dimStateVars
+  assert(_normalizer);
+  assert(values);
+  assert(nvalues == _SlipWeakeningStress::numStateVars);
+
+  const PylithScalar lengthScale = _normalizer->lengthScale();
+
+  values[s_slipCum] *= lengthScale;
+  values[s_slipPrev] *= lengthScale;
+} // _dimStateVars
+
+// ----------------------------------------------------------------------
+// Compute friction from properties and state variables.
+PylithScalar
+pylith::friction::SlipWeakeningStress::_calcFriction(const PylithScalar t,
+						     const PylithScalar slip,
+						     const PylithScalar slipRate,
+						     const PylithScalar normalTraction,
+						     const PylithScalar* properties,
+						     const int numProperties,
+						     const PylithScalar* stateVars,
+						     const int numStateVars)
+{ // _calcFriction
+  assert(properties);
+  assert(_SlipWeakeningStress::numProperties == numProperties);
+  assert(stateVars);
+  assert(_SlipWeakeningStress::numStateVars == numStateVars);
+
+  PylithScalar friction = 0.0;
+  if (normalTraction <= 0.0) {
+    // if fault is in compression
+    if (stateVars[s_slipCum] < properties[p_d0] &&
+	t < properties[p_weaktime]) {
+	// if/else linear slip-weakening form
+	friction = properties[p_stressStatic] -
+	  (properties[p_stressStatic] - properties[p_stressDyn]) * 
+	  stateVars[s_slipCum] / properties[p_d0];
+      } else {
+	friction = properties[p_stressDyn];
+      } // if/else
+  } // if
+
+  PetscLogFlops(6);
+
+  return friction;
+} // _calcFriction
+
+// ----------------------------------------------------------------------
+// Update state variables (for next time step).
+void
+pylith::friction::SlipWeakeningStress::_updateStateVars(const PylithScalar t,
+							const PylithScalar slip,
+							const PylithScalar slipRate,
+							const PylithScalar normalTraction,
+							PylithScalar* const stateVars,
+							const int numStateVars,
+							const PylithScalar* properties,
+							const int numProperties)
+{ // _updateStateVars
+  assert(properties);
+  assert(_SlipWeakeningStress::numProperties == numProperties);
+  assert(stateVars);
+  assert(_SlipWeakeningStress::numStateVars == numStateVars);
+
+  const PylithScalar tolerance = 1.0e-12;
+  if (slipRate > tolerance) {
+    const PylithScalar slipPrev = stateVars[s_slipPrev];
+
+    stateVars[s_slipPrev] = slip;
+    stateVars[s_slipCum] += fabs(slip - slipPrev);
+  } else {
+    // Sliding has stopped, so reset state variables.
+    stateVars[s_slipPrev] = slip;
+    stateVars[s_slipCum] = 0.0;
+  } // else
+} // _updateStateVars
+
+
+// End of file 

Added: short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/SlipWeakeningStress.hh
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/SlipWeakeningStress.hh	                        (rev 0)
+++ short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/SlipWeakeningStress.hh	2012-11-20 01:52:16 UTC (rev 21056)
@@ -0,0 +1,180 @@
+// -*- C++ -*-
+//
+// ----------------------------------------------------------------------
+//
+// Brad T. Aagaard, U.S. Geological Survey
+// Charles A. Williams, GNS Science
+// Matthew G. Knepley, University of Chicago
+//
+// This code was developed as part of the Computational Infrastructure
+// for Geodynamics (http://geodynamics.org).
+//
+// Copyright (c) 2010-2011 University of California, Davis
+//
+// See COPYING for license information.
+//
+// ----------------------------------------------------------------------
+//
+
+/** @file libsrc/friction/SlipWeakeningStress.hh
+ *
+ * @brief C++ slip weakening fault constitutive model with
+ * stress-based friction and additional time parameter for nucleation.
+ */
+
+#if !defined(pylith_friction_slipweakeningstress_hh)
+#define pylith_friction_slipweakeningstress_hh
+
+// Include directives ---------------------------------------------------
+#include "FrictionModel.hh" // ISA FrictionModel
+
+// SlipWeakeningStress -------------------------------------------------------
+/** @brief C++ slip weakening fault constitutive model.
+ *
+ * Friction is equal stress as a function of slip.
+ */
+
+class pylith::friction::SlipWeakeningStress : public FrictionModel
+{ // class SlipWeakeningStress
+  friend class TestSlipWeakeningStress; // unit testing
+
+  // PUBLIC METHODS /////////////////////////////////////////////////////
+public :
+
+  /// Default constructor.
+  SlipWeakeningStress(void);
+
+  /// Destructor.
+  ~SlipWeakeningStress(void);
+
+  // PROTECTED METHODS //////////////////////////////////////////////////
+protected :
+
+  /// These methods should be implemented by every constitutive model.
+
+  /** Compute properties from values in spatial database.
+   *
+   * @param propValues Array of property values.
+   * @param dbValues Array of database values.
+   */
+  void _dbToProperties(PylithScalar* const propValues,
+		       const scalar_array& dbValues) const;
+
+  /** Nondimensionalize properties.
+   *
+   * @param values Array of property values.
+   * @param nvalues Number of values.
+   */
+  void _nondimProperties(PylithScalar* const values,
+			 const int nvalues) const;
+
+  /** Dimensionalize properties.
+   *
+   * @param values Array of property values.
+   * @param nvalues Number of values.
+   */
+  void _dimProperties(PylithScalar* const values,
+		      const int nvalues) const;
+
+  /** Compute friction from properties and state variables.
+   *
+   * @param slip Current slip at location.
+   * @param slipRate Current slip rate at location.
+   * @param normalTraction Normal traction at location.
+   * @param properties Properties at location.
+   * @param numProperties Number of properties.
+   * @param stateVars State variables at location.
+   * @param numStateVars Number of state variables.
+   */
+  void _dbToStateVars(PylithScalar* const stateValues,
+		      const scalar_array& dbValues) const;
+
+  /** Nondimensionalize state variables.
+   *
+   * @param values Array of initial state values.
+   * @param nvalues Number of values.
+   */
+  void _nondimStateVars(PylithScalar* const values,
+			   const int nvalues) const;
+  
+  /** Dimensionalize state variables.
+   *
+   * @param values Array of initial state values.
+   * @param nvalues Number of values.
+   */
+  void _dimStateVars(PylithScalar* const values,
+			const int nvalues) const;
+
+  /** Compute friction from properties and state variables.
+   *
+   * @param t Time in simulation.
+   * @param slip Current slip at location.
+   * @param slipRate Current slip rate at location.
+   * @param normalTraction Normal traction at location.
+   * @param properties Properties at location.
+   * @param numProperties Number of properties.
+   * @param stateVars State variables at location.
+   * @param numStateVars Number of state variables.
+   */
+  PylithScalar _calcFriction(const PylithScalar t,
+			     const PylithScalar slip,
+			     const PylithScalar slipRate,
+			     const PylithScalar normalTraction,
+			     const PylithScalar* properties,
+			     const int numProperties,
+			     const PylithScalar* stateVars,
+			     const int numStateVars);
+
+  /** Update state variables (for next time step).
+   *
+   * @param t Time in simulation.
+   * @param slip Current slip at location.
+   * @param slipRate Current slip rate at location.
+   * @param normalTraction Normal traction at location.
+   * @param stateVars State variables at location.
+   * @param numStateVars Number of state variables.
+   * @param properties Properties at location.
+   * @param numProperties Number of properties.
+   */
+  void _updateStateVars(const PylithScalar t,
+			const PylithScalar slip,
+			const PylithScalar slipRate,
+			const PylithScalar normalTraction,
+			PylithScalar* const stateVars,
+			const int numStateVars,
+			const PylithScalar* properties,
+			const int numProperties);
+
+  // PRIVATE MEMBERS ////////////////////////////////////////////////////
+private :
+
+  /// Indices for properties in section and spatial database.
+  static const int p_stressStatic;
+  static const int p_stressDyn;
+  static const int p_d0;
+  static const int p_weaktime;
+
+  static const int db_stressStatic;
+  static const int db_stressDyn;
+  static const int db_d0;
+  static const int db_weaktime;
+
+  /// Indices for state variables in section and spatial database.
+  static const int s_slipCum;
+  static const int s_slipPrev;
+
+  static const int db_slipCum;
+  static const int db_slipPrev;
+
+  // NOT IMPLEMENTED ////////////////////////////////////////////////////
+private :
+
+  SlipWeakeningStress(const SlipWeakeningStress&); ///< Not implemented.
+  const SlipWeakeningStress& operator=(const SlipWeakeningStress&); ///< Not implemented
+
+}; // class SlipWeakeningStress
+
+#endif // pylith_friction_slipweakeningstress_hh
+
+
+// End of file 

Modified: short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/frictionfwd.hh
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/frictionfwd.hh	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/libsrc/pylith/friction/frictionfwd.hh	2012-11-20 01:52:16 UTC (rev 21056)
@@ -35,6 +35,7 @@
     class StaticFriction;
     class SlipWeakening;
     class SlipWeakeningTime;
+    class SlipWeakeningStress;
     class RateStateAgeing;
     class TimeWeakening;
 

Modified: short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/Makefile.am
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/Makefile.am	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/Makefile.am	2012-11-20 01:52:16 UTC (rev 21056)
@@ -29,6 +29,7 @@
 	StaticFriction.i \
 	SlipWeakening.i \
 	SlipWeakeningTime.i \
+	SlipWeakeningStress.i \
 	RateStateAgeing.i \
 	TimeWeakening.i
 

Added: short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/SlipWeakeningStress.i
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/SlipWeakeningStress.i	                        (rev 0)
+++ short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/SlipWeakeningStress.i	2012-11-20 01:52:16 UTC (rev 21056)
@@ -0,0 +1,92 @@
+// -*- C++ -*-
+//
+// ----------------------------------------------------------------------
+//
+// Brad T. Aagaard, U.S. Geological Survey
+// Charles A. Williams, GNS Science
+// Matthew G. Knepley, University of Chicago
+//
+// This code was developed as part of the Computational Infrastructure
+// for Geodynamics (http://geodynamics.org).
+//
+// Copyright (c) 2010-2011 University of California, Davis
+//
+// See COPYING for license information.
+//
+// ----------------------------------------------------------------------
+//
+
+/** @file modulesrc/friction/SlipWeakeningStress.i
+ *
+ * Python interface to C++ SlipWeakeningStress object.
+ */
+
+namespace pylith {
+  namespace friction {
+
+    class SlipWeakeningStress : public FrictionModel
+    { // class SlipWeakeningStress
+
+      // PUBLIC METHODS /////////////////////////////////////////////////
+    public :
+
+      /// Default constructor.
+      SlipWeakeningStress(void);
+
+      /// Destructor.
+      ~SlipWeakeningStress(void);
+
+      // PROTECTED METHODS //////////////////////////////////////////////
+    protected :
+
+      /** Compute properties from values in spatial database.
+       *
+       * @param propValues Array of property values.
+       * @param dbValues Array of database values.
+       */
+      void _dbToProperties(PylithScalar* const propValues,
+			   const scalar_array& dbValues) const;
+
+      /** Nondimensionalize properties.
+       *
+       * @param values Array of property values.
+       * @param nvalues Number of values.
+       */
+      void _nondimProperties(PylithScalar* const values,
+			     const int nvalues) const;
+
+      /** Dimensionalize properties.
+       *
+       * @param values Array of property values.
+       * @param nvalues Number of values.
+       */
+      void _dimProperties(PylithScalar* const values,
+			  const int nvalues) const;
+
+      /** Compute friction from properties and state variables.
+       *
+       * @param t Current time.
+       * @param slip Current slip at location.
+       * @param slipRate Current slip rate at location.
+       * @param normalTraction Normal traction at location.
+       * @param properties Properties at location.
+       * @param numProperties Number of properties.
+       * @param stateVars State variables at location.
+       * @param numStateVars Number of state variables.
+       */
+      PylithScalar _calcFriction(const PylithScalar t,
+				 const PylithScalar slip,
+				 const PylithScalar slipRate,
+				 const PylithScalar normalTraction,
+				 const PylithScalar* properties,
+				 const int numProperties,
+				 const PylithScalar* stateVars,
+				 const int numStateVars);
+
+    }; // class SlipWeakeningStress
+
+  } // friction
+} // pylith
+
+
+// End of file 

Modified: short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/friction.i
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/friction.i	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/modulesrc/friction/friction.i	2012-11-20 01:52:16 UTC (rev 21056)
@@ -30,6 +30,7 @@
 #include "pylith/friction/StaticFriction.hh"
 #include "pylith/friction/SlipWeakening.hh"
 #include "pylith/friction/SlipWeakeningTime.hh"
+#include "pylith/friction/SlipWeakeningStress.hh"
 #include "pylith/friction/RateStateAgeing.hh"
 #include "pylith/friction/TimeWeakening.hh"
 
@@ -66,6 +67,7 @@
 %include "StaticFriction.i"
 %include "SlipWeakening.i"
 %include "SlipWeakeningTime.i"
+%include "SlipWeakeningStress.i"
 %include "RateStateAgeing.i"
 %include "TimeWeakening.i"
 

Modified: short/3D/PyLith/branches/v1.7-trunk/pylith/Makefile.am
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/pylith/Makefile.am	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/pylith/Makefile.am	2012-11-20 01:52:16 UTC (rev 21056)
@@ -71,6 +71,7 @@
 	friction/StaticFriction.py \
 	friction/SlipWeakening.py \
 	friction/SlipWeakeningTime.py \
+	friction/SlipWeakeningStress.py \
 	friction/RateStateAgeing.py \
 	friction/TimeWeakening.py \
 	materials/__init__.py \

Added: short/3D/PyLith/branches/v1.7-trunk/pylith/friction/SlipWeakeningStress.py
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/pylith/friction/SlipWeakeningStress.py	                        (rev 0)
+++ short/3D/PyLith/branches/v1.7-trunk/pylith/friction/SlipWeakeningStress.py	2012-11-20 01:52:16 UTC (rev 21056)
@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+#
+# ----------------------------------------------------------------------
+#
+# Brad T. Aagaard, U.S. Geological Survey
+# Charles A. Williams, GNS Science
+# Matthew G. Knepley, University of Chicago
+#
+# This code was developed as part of the Computational Infrastructure
+# for Geodynamics (http://geodynamics.org).
+#
+# Copyright (c) 2010-2011 University of California, Davis
+#
+# See COPYING for license information.
+#
+# ----------------------------------------------------------------------
+#
+
+## @file pylith/friction/SlipWeakeningStress.py
+##
+## @brief Python object implementing slip weakening with stress levels
+## and forced weakening at a give time (sometimes used for
+## nucleation).
+##
+## Factory: friction_model.
+
+from FrictionModel import FrictionModel
+from friction import SlipWeakeningStress as ModuleSlipWeakeningStress
+
+# SlipWeakeningStress class
+class SlipWeakeningStress(FrictionModel, ModuleSlipWeakeningStress):
+  """
+  Python object implementing Slip Weakening.
+
+  Factory: friction_model.
+  """
+
+  # PUBLIC METHODS /////////////////////////////////////////////////////
+
+  def __init__(self, name="slipweakening"):
+    """
+    Constructor.
+    """
+    FrictionModel.__init__(self, name)
+    self.availableFields = \
+        {'vertex': \
+           {'info': ["static_stress",
+                     "dynamic_stress",
+                     "slip_weakening_parameter",
+                     "weakening_time"],
+            'data': ["cumulative_slip",
+                     "previous_slip"]},
+         'cell': \
+           {'info': [],
+            'data': []}}
+    self._loggingPrefix = "FrSWS "
+    return
+
+
+  # PRIVATE METHODS ////////////////////////////////////////////////////
+
+  def _createModuleObj(self):
+    """
+    Call constructor for module object for access to C++ object.
+    """
+    ModuleSlipWeakeningStress.__init__(self)
+    return
+  
+
+# FACTORIES ////////////////////////////////////////////////////////////
+
+def friction_model():
+  """
+  Factory associated with SlipWeakeningStress.
+  """
+  return SlipWeakeningStress()
+
+
+# End of file 

Modified: short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/Makefile.am
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/Makefile.am	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/Makefile.am	2012-11-20 01:52:16 UTC (rev 21056)
@@ -32,6 +32,7 @@
 	TestStaticFriction.cc \
 	TestSlipWeakening.cc \
 	TestSlipWeakeningTime.cc \
+	TestSlipWeakeningStress.cc \
 	TestRateStateAgeing.cc \
 	TestTimeWeakening.cc
 
@@ -41,6 +42,7 @@
 	TestStaticFriction.hh \
 	TestSlipWeakening.hh \
 	TestSlipWeakeningTime.hh \
+	TestSlipWeakeningStress.hh \
 	TestRateStateAgeing.hh \
 	TestTimeWeakening.hh
 
@@ -50,6 +52,7 @@
 	data/StaticFrictionData.cc \
 	data/SlipWeakeningData.cc \
 	data/SlipWeakeningTimeData.cc \
+	data/SlipWeakeningStressData.cc \
 	data/RateStateAgeingData.cc \
 	data/TimeWeakeningData.cc
 
@@ -59,6 +62,7 @@
 	data/StaticFrictionData.hh \
 	data/SlipWeakeningData.hh \
 	data/SlipWeakeningTimeData.hh \
+	data/SlipWeakeningStressData.hh \
 	data/RateStateAgeingData.hh \
 	data/TimeWeakeningData.hh
 

Modified: short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestFrictionModel.cc
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestFrictionModel.cc	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestFrictionModel.cc	2012-11-20 01:52:16 UTC (rev 21056)
@@ -441,14 +441,12 @@
     
     const PylithScalar* const propertiesE = &_data->properties[iLoc*propertiesSize];
     const PylithScalar tolerance = 1.0e-06;
+
     for (int i=0; i < propertiesSize; ++i) {
       if (fabs(propertiesE[i]) > tolerance)
-	CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, 
-				     properties[i]/propertiesE[i],
-				     tolerance);
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(1.0, properties[i]/propertiesE[i], tolerance);
       else
-	CPPUNIT_ASSERT_DOUBLES_EQUAL(propertiesE[i], properties[i],
-				     tolerance);
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(propertiesE[i], properties[i], tolerance);
     } // for
   } // for
 } // testDBToProperties

Added: short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestSlipWeakeningStress.cc
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestSlipWeakeningStress.cc	                        (rev 0)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestSlipWeakeningStress.cc	2012-11-20 01:52:16 UTC (rev 21056)
@@ -0,0 +1,87 @@
+// -*- C++ -*-
+//
+// ----------------------------------------------------------------------
+//
+// Brad T. Aagaard, U.S. Geological Survey
+// Charles A. Williams, GNS Science
+// Matthew G. Knepley, University of Chicago
+//
+// This code was developed as part of the Computational Infrastructure
+// for Geodynamics (http://geodynamics.org).
+//
+// Copyright (c) 2010-2011 University of California, Davis
+//
+// See COPYING for license information.
+//
+// ----------------------------------------------------------------------
+//
+
+#include <portinfo>
+
+#include "TestSlipWeakeningStress.hh" // Implementation of class methods
+
+#include "data/SlipWeakeningStressData.hh" // USES SlipWeakeningStressData
+
+#include "pylith/friction/SlipWeakeningStress.hh" // USES SlipWeakeningStress
+
+// ----------------------------------------------------------------------
+CPPUNIT_TEST_SUITE_REGISTRATION( pylith::friction::TestSlipWeakeningStress );
+
+// ----------------------------------------------------------------------
+// Setup testing data.
+void
+pylith::friction::TestSlipWeakeningStress::setUp(void)
+{ // setUp
+  _friction = new SlipWeakeningStress();
+  _data = new SlipWeakeningStressData();
+  setupNormalizer();
+} // setUp
+
+// ----------------------------------------------------------------------
+// Test properties metadata.
+void
+pylith::friction::TestSlipWeakeningStress::testPropertiesMetadata(void)
+{ // testPropertiesMetadata
+  SlipWeakeningStress model;
+
+  CPPUNIT_ASSERT_EQUAL(4, model._metadata.numDBProperties());
+  const char* const* names = model._metadata.dbProperties();
+  CPPUNIT_ASSERT_EQUAL(std::string("static-stress"), std::string(names[0]));
+  CPPUNIT_ASSERT_EQUAL(std::string("dynamic-stress"), std::string(names[1]));
+  CPPUNIT_ASSERT_EQUAL(std::string("slip-weakening-parameter"), std::string(names[2]));
+  CPPUNIT_ASSERT_EQUAL(std::string("weakening-time"), std::string(names[3]));
+} // testPropertiesMetadata
+
+// ----------------------------------------------------------------------
+// Test state variable metadata.
+void
+pylith::friction::TestSlipWeakeningStress::testStateVarsMetadata(void)
+{ // testStateVarsMetadata
+  SlipWeakeningStress model;
+
+  CPPUNIT_ASSERT_EQUAL(2, model._metadata.numDBStateVars());
+  const char* const* names = model._metadata.dbStateVars();
+  CPPUNIT_ASSERT_EQUAL(std::string("cumulative-slip"), 
+		       std::string(names[0]));
+  CPPUNIT_ASSERT_EQUAL(std::string("previous-slip"), 
+		       std::string(names[1]));
+} // testStateVarsMetadata
+
+// ----------------------------------------------------------------------
+// Test hasPropStateVar().
+void
+pylith::friction::TestSlipWeakeningStress::testHasPropStateVar(void)
+{ // testHasPropStateVar
+  SlipWeakeningStress material;
+
+  CPPUNIT_ASSERT(material.hasPropStateVar("static_stress"));
+  CPPUNIT_ASSERT(material.hasPropStateVar("dynamic_stress"));
+  CPPUNIT_ASSERT(material.hasPropStateVar("slip_weakening_parameter"));
+  CPPUNIT_ASSERT(material.hasPropStateVar("weakening_time"));
+  CPPUNIT_ASSERT(!material.hasPropStateVar("aaa"));
+  CPPUNIT_ASSERT(material.hasPropStateVar("cumulative_slip"));
+  CPPUNIT_ASSERT(material.hasPropStateVar("previous_slip"));
+} // testHasPropStateVar
+
+
+// End of file 

Added: short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestSlipWeakeningStress.hh
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestSlipWeakeningStress.hh	                        (rev 0)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/TestSlipWeakeningStress.hh	2012-11-20 01:52:16 UTC (rev 21056)
@@ -0,0 +1,80 @@
+// -*- C++ -*-
+//
+// ----------------------------------------------------------------------
+//
+// Brad T. Aagaard, U.S. Geological Survey
+// Charles A. Williams, GNS Science
+// Matthew G. Knepley, University of Chicago
+//
+// This code was developed as part of the Computational Infrastructure
+// for Geodynamics (http://geodynamics.org).
+//
+// Copyright (c) 2010-2011 University of California, Davis
+//
+// See COPYING for license information.
+//
+// ----------------------------------------------------------------------
+//
+
+/**
+ * @file unittests/libtests/friction/TestSlipWeakeningStress.hh
+ *
+ * @brief C++ TestSlipWeakeningStress object
+ *
+ * C++ unit testing for SlipWeakeningStress.
+ */
+
+#if !defined(pylith_friction_testslipweakeningstress_hh)
+#define pylith_friction_testslipweakeningstress_hh
+
+#include "TestFrictionModel.hh"
+
+/// Namespace for pylith package
+namespace pylith {
+  namespace friction {
+    class TestSlipWeakeningStress;
+  } // friction
+} // pylith
+
+/// C++ unit testing for SlipWeakeningStress
+class pylith::friction::TestSlipWeakeningStress : public TestFrictionModel
+{ // class TestSlipWeakeningStress
+
+  // CPPUNIT TEST SUITE /////////////////////////////////////////////////
+  CPPUNIT_TEST_SUITE( TestSlipWeakeningStress );
+
+  CPPUNIT_TEST( testPropertiesMetadata );
+  CPPUNIT_TEST( testStateVarsMetadata );
+  CPPUNIT_TEST( testDBToProperties );
+  CPPUNIT_TEST( testNonDimProperties );
+  CPPUNIT_TEST( testDimProperties );
+  CPPUNIT_TEST( testDBToStateVars );
+  CPPUNIT_TEST( testNonDimStateVars );
+  CPPUNIT_TEST( testDimStateVars );
+  CPPUNIT_TEST( testHasPropStateVar );
+  CPPUNIT_TEST( test_calcFriction );
+  CPPUNIT_TEST( test_updateStateVars );
+
+  CPPUNIT_TEST_SUITE_END();
+
+  // PUBLIC METHODS /////////////////////////////////////////////////////
+public :
+
+  /// Setup testing data.
+  void setUp(void);
+
+  /// Test properties metadata.
+  void testPropertiesMetadata(void);
+
+  /// Test state variable metadata.
+  void testStateVarsMetadata(void);
+
+  /// Test hasPropStateVar().
+  void testHasPropStateVar(void);
+
+}; // class TestSlipWeakeningStress
+
+#endif // pylith_friction_testslipweakeningstress_hh
+
+
+// End of file 

Added: short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningStressData.cc
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningStressData.cc	                        (rev 0)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningStressData.cc	2012-11-20 01:52:16 UTC (rev 21056)
@@ -0,0 +1,185 @@
+// -*- C++ -*-
+//
+// ======================================================================
+//
+// Brad T. Aagaard, U.S. Geological Survey
+// Charles A. Williams, GNS Science
+// Matthew G. Knepley, University of Chicago
+//
+// This code was developed as part of the Computational Infrastructure
+// for Geodynamics (http://geodynamics.org).
+//
+// Copyright (c) 2010-2011 University of California, Davis
+//
+// See COPYING for license information.
+//
+// ======================================================================
+//
+
+#include "SlipWeakeningStressData.hh"
+
+const int pylith::friction::SlipWeakeningStressData::_numLocs = 2;
+
+const int pylith::friction::SlipWeakeningStressData::_numProperties = 4;
+
+const int pylith::friction::SlipWeakeningStressData::_numStateVars = 2;
+
+const int pylith::friction::SlipWeakeningStressData::_numDBProperties = 4;
+
+const int pylith::friction::SlipWeakeningStressData::_numDBStateVars = 2;
+
+const int pylith::friction::SlipWeakeningStressData::_numPropsVertex = 4;
+
+const int pylith::friction::SlipWeakeningStressData::_numVarsVertex = 2;
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_lengthScale =   1.00000000e+03;
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_timeScale =   1.00000000e+01;
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_pressureScale =   2.5000000e+10;
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_densityScale =   1.00000000e+03;
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_dt = 0.01;
+
+const int pylith::friction::SlipWeakeningStressData::_numPropertyValues[] = {
+  1,
+  1,
+  1,
+  1,
+};
+
+const int pylith::friction::SlipWeakeningStressData::_numStateVarValues[] = {
+  1,
+  1,
+};
+
+const char* pylith::friction::SlipWeakeningStressData::_dbPropertyValues[] = {
+  "static-stress",
+  "dynamic-stress",
+  "slip-weakening-parameter",
+  "weakening-time",
+};
+
+const char* pylith::friction::SlipWeakeningStressData::_dbStateVarValues[] = {
+  "cumulative-slip",
+  "previous-slip",
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_dbProperties[] = {
+  2.0e+6,
+  1.0e+6,
+  0.8,
+  2.0,
+  2.5e+6,
+  1.25e+6,
+  0.4,
+  1.0,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_dbStateVars[] = {
+  0.4,
+  0.2,
+  0.5,
+  0.1,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_properties[] = {
+  2.0e+6,
+  1.0e+6,
+  0.8,
+  2.0,
+  2.5e+6,
+  1.25e+6,
+  0.4,
+  1.0,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_stateVars[] = {
+  0.4,
+  0.2,
+  0.5,
+  0.1,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_propertiesNondim[] = {
+  2.0e+6/2.5e+10,
+  1.0e+6/2.5e+10,
+  0.0008,
+  0.2,
+  2.5e+6/2.5e+10,
+  1.25e+6/2.5e+10,
+  0.0004,
+  0.1,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_stateVarsNondim[] = {
+  0.0004,
+  0.0002,
+  0.0005,
+  0.0001,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_friction[] = {
+  1.5e+6,
+  1.25e+6,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_slip[] = {
+  0.12,
+  0.25,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_slipRate[] = {
+  0.74,
+  0.64,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_normalTraction[] = {
+  -2.2,
+  -2.3,
+};
+
+const PylithScalar pylith::friction::SlipWeakeningStressData::_stateVarsUpdated[] = {
+  0.48,
+  0.12,
+  0.65,
+  0.25,
+};
+
+pylith::friction::SlipWeakeningStressData::SlipWeakeningStressData(void)
+{ // constructor
+  numLocs = _numLocs;
+  numProperties = _numProperties;
+  numStateVars = _numStateVars;
+  numDBProperties = _numDBProperties;
+  numDBStateVars = _numDBStateVars;
+  numPropsVertex = _numPropsVertex;
+  numVarsVertex = _numVarsVertex;
+  lengthScale = _lengthScale;
+  timeScale = _timeScale;
+  pressureScale = _pressureScale;
+  densityScale = _densityScale;
+  numPropertyValues = const_cast<int*>(_numPropertyValues);
+  numStateVarValues = const_cast<int*>(_numStateVarValues);
+  dbPropertyValues = const_cast<char**>(_dbPropertyValues);
+  dbStateVarValues = const_cast<char**>(_dbStateVarValues);
+  dbProperties = const_cast<PylithScalar*>(_dbProperties);
+  dbStateVars = const_cast<PylithScalar*>(_dbStateVars);
+  dt = _dt;
+  properties = const_cast<PylithScalar*>(_properties);
+  stateVars = const_cast<PylithScalar*>(_stateVars);
+  propertiesNondim = const_cast<PylithScalar*>(_propertiesNondim);
+  stateVarsNondim = const_cast<PylithScalar*>(_stateVarsNondim);
+  friction = const_cast<PylithScalar*>(_friction);
+  slip = const_cast<PylithScalar*>(_slip);
+  slipRate = const_cast<PylithScalar*>(_slipRate);
+  normalTraction = const_cast<PylithScalar*>(_normalTraction);
+  stateVarsUpdated = const_cast<PylithScalar*>(_stateVarsUpdated);
+} // constructor
+
+pylith::friction::SlipWeakeningStressData::~SlipWeakeningStressData(void)
+{}
+
+
+// End of file

Added: short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningStressData.hh
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningStressData.hh	                        (rev 0)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningStressData.hh	2012-11-20 01:52:16 UTC (rev 21056)
@@ -0,0 +1,101 @@
+// -*- C++ -*-
+//
+// ======================================================================
+//
+// Brad T. Aagaard, U.S. Geological Survey
+// Charles A. Williams, GNS Science
+// Matthew G. Knepley, University of Chicago
+//
+// This code was developed as part of the Computational Infrastructure
+// for Geodynamics (http://geodynamics.org).
+//
+// Copyright (c) 2010-2011 University of California, Davis
+//
+// See COPYING for license information.
+//
+// ======================================================================
+//
+
+#if !defined(pylith_friction_slipweakeningstressdata_hh)
+#define pylith_friction_slipweakeningstressdata_hh
+
+#include "FrictionModelData.hh"
+
+namespace pylith {
+  namespace friction {
+     class SlipWeakeningStressData;
+  } // pylith
+} // friction
+
+class pylith::friction::SlipWeakeningStressData : public FrictionModelData
+{
+
+public: 
+
+  /// Constructor
+  SlipWeakeningStressData(void);
+
+  /// Destructor
+  ~SlipWeakeningStressData(void);
+
+private:
+
+  static const int _numLocs;
+
+  static const int _numProperties;
+
+  static const int _numStateVars;
+
+  static const int _numDBProperties;
+
+  static const int _numDBStateVars;
+
+  static const int _numPropsVertex;
+
+  static const int _numVarsVertex;
+
+  static const PylithScalar _lengthScale;
+
+  static const PylithScalar _timeScale;
+
+  static const PylithScalar _pressureScale;
+
+  static const PylithScalar _densityScale;
+
+  static const PylithScalar _dt;
+
+  static const int _numPropertyValues[];
+
+  static const int _numStateVarValues[];
+
+  static const char* _dbPropertyValues[];
+
+  static const char* _dbStateVarValues[];
+
+  static const PylithScalar _dbProperties[];
+
+  static const PylithScalar _dbStateVars[];
+
+  static const PylithScalar _properties[];
+
+  static const PylithScalar _stateVars[];
+
+  static const PylithScalar _propertiesNondim[];
+
+  static const PylithScalar _stateVarsNondim[];
+
+  static const PylithScalar _friction[];
+
+  static const PylithScalar _slip[];
+
+  static const PylithScalar _slipRate[];
+
+  static const PylithScalar _normalTraction[];
+
+  static const PylithScalar _stateVarsUpdated[];
+
+};
+
+#endif // pylith_friction_slipweakeningstressdata_hh
+
+// End of file

Modified: short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningTimeData.hh
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningTimeData.hh	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/libtests/friction/data/SlipWeakeningTimeData.hh	2012-11-20 01:52:16 UTC (rev 21056)
@@ -16,8 +16,8 @@
 // ======================================================================
 //
 
-#if !defined(pylith_friction_slipweakeningdata_hh)
-#define pylith_friction_slipweakeningdata_hh
+#if !defined(pylith_friction_slipweakeningtimedata_hh)
+#define pylith_friction_slipweakeningtimedata_hh
 
 #include "FrictionModelData.hh"
 
@@ -96,6 +96,6 @@
 
 };
 
-#endif // pylith_friction_slipweakeningdata_hh
+#endif // pylith_friction_slipweakeningtimedata_hh
 
 // End of file

Modified: short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/Makefile.am
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/Makefile.am	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/Makefile.am	2012-11-20 01:52:16 UTC (rev 21056)
@@ -31,6 +31,7 @@
 	TestStaticFriction.py \
 	TestSlipWeakening.py \
 	TestSlipWeakeningTime.py \
+	TestSlipWeakeningStress.py \
 	TestRateStateAgeing.py \
 	TestTimeWeakening.py
 

Added: short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/TestSlipWeakeningStress.py
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/TestSlipWeakeningStress.py	                        (rev 0)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/TestSlipWeakeningStress.py	2012-11-20 01:52:16 UTC (rev 21056)
@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+#
+# ======================================================================
+#
+# Brad T. Aagaard, U.S. Geological Survey
+# Charles A. Williams, GNS Science
+# Matthew G. Knepley, University of Chicago
+#
+# This code was developed as part of the Computational Infrastructure
+# for Geodynamics (http://geodynamics.org).
+#
+# Copyright (c) 2010-2011 University of California, Davis
+#
+# See COPYING for license information.
+#
+# ======================================================================
+#
+
+## @file unittests/pytests/friction/TestSlipWeakeningStress.py
+
+## @brief Unit testing of SlipWeakeningStress object.
+
+import unittest
+
+from pylith.friction.SlipWeakeningStress import SlipWeakeningStress
+
+# ----------------------------------------------------------------------
+class TestSlipWeakeningStress(unittest.TestCase):
+  """
+  Unit testing of SlipWeakeningStress object.
+  """
+
+  def setUp(self):
+    """
+    Setup test subject.
+    """
+    self.friction = SlipWeakeningStress()
+    return
+  
+
+  def test_constructor(self):
+    """
+    Test constructor.
+    """
+    return
+
+
+  def test_factory(self):
+    """
+    Test factory method.
+    """
+    from pylith.friction.SlipWeakeningStress import friction_model
+    m = friction_model()
+    return
+
+
+# End of file 

Modified: short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/testfriction.py
===================================================================
--- short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/testfriction.py	2012-11-20 00:55:43 UTC (rev 21055)
+++ short/3D/PyLith/branches/v1.7-trunk/unittests/pytests/friction/testfriction.py	2012-11-20 01:52:16 UTC (rev 21056)
@@ -71,6 +71,9 @@
     from TestSlipWeakeningTime import TestSlipWeakeningTime
     suite.addTest(unittest.makeSuite(TestSlipWeakeningTime))
 
+    from TestSlipWeakeningStress import TestSlipWeakeningStress
+    suite.addTest(unittest.makeSuite(TestSlipWeakeningStress))
+
     from TestRateStateAgeing import TestRateStateAgeing
     suite.addTest(unittest.makeSuite(TestRateStateAgeing))
 



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