[cig-commits] r15574 - short/3D/PyLith/branches/pylith-friction

[brad at geodynamics.org]

Author: brad
Date: 2009-08-21 14:31:43 -0700 (Fri, 21 Aug 2009)
New Revision: 15574

Modified:
   short/3D/PyLith/branches/pylith-friction/TODO
Log:
Updated TODO for friction.

Modified: short/3D/PyLith/branches/pylith-friction/TODO
===================================================================
--- short/3D/PyLith/branches/pylith-friction/TODO	2009-08-21 21:12:57 UTC (rev 15573)
+++ short/3D/PyLith/branches/pylith-friction/TODO	2009-08-21 21:31:43 UTC (rev 15574)
@@ -3,6 +3,57 @@
 ======================================================================
 
 ----------------------------------------------------------------------
+FRICTION
+----------------------------------------------------------------------
+
+1. Update header files for documentation via doxygen. [Brad]
+
+2. FaultCohesiveDyn
+
+  a. Fix implementation so that it works for implicit case [Brad and Surendra]
+    Use Lagrange multipliers?
+    Enforce interpenetration in strong sense?
+    Enforce stick-slip in weak sense?
+
+    Create axial and shear test cases in playpen/friction. [Surendra]
+
+  b. Implement output of desired fields [Brad]
+    orientation
+    initial tractions
+    slip
+    traction
+    slip
+    fault constitutive model parameters
+    fault constitutive model state variables
+
+  c. Unit tests [Brad and Surendra]
+    Brad will create base class and template.
+    Surendra will complete for different cell types (quad, tri, tet, hex)
+
+    Use slip-weakening friction (don't use trivial constant friction)
+    testInitialize()
+    testIntegrateResidual()
+    testIntegrateJacobian()??
+    testOrientation()
+    testInitialTractions()
+
+  c. cleanup/optimization
+
+3. pylith::friction::FrictionModel
+  (base class for fault constitutive models) [Brad]
+  similar to Material + ElasticMaterial
+
+4. Constant friction [Surendra]
+  Simplest friction model with constant coefficient of friction
+
+5. SlipWeakening [Surendra]
+  Slip-weakening friction model
+
+6. Other fault constitutive models [Surendra]
+  Rate- and state-friction with aging law
+  Rate- and state-friction with slip law
+
+----------------------------------------------------------------------
 POST RELEASE 1.4
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