[cig-commits] [commit] baagaard/add-release-2.1.0: Add updates from README to release announcement. (d123be9)

[cig_noreply at geodynamics.org]

Repository : https://github.com/geodynamics/pylith

On branch  : baagaard/add-release-2.1.0
Link       : https://github.com/geodynamics/pylith/compare/7ffd700bea1a4739ac0a368714267f30bc1952c0...d123be975a549271424b5fb8413e8aab497eeb9d

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commit d123be975a549271424b5fb8413e8aab497eeb9d
Author: Brad Aagaard <baagaard at usgs.gov>
Date:   Tue Jan 6 14:14:00 2015 -0800

    Add updates from README to release announcement.


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d123be975a549271424b5fb8413e8aab497eeb9d
 doc/releasenotes/announce_v2.1.0.txt | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/doc/releasenotes/announce_v2.1.0.txt b/doc/releasenotes/announce_v2.1.0.txt
index 13c8481..8b6ee3a 100644
--- a/doc/releasenotes/announce_v2.1.0.txt
+++ b/doc/releasenotes/announce_v2.1.0.txt
@@ -54,4 +54,22 @@ RELEASE NOTES
     intersection must also come AFTER the through-going fault in the
     list of fault interfaces.
 
-  - ADD DRUCKER-PRAGER STUFF HERE
+  - There have been two major bug fixes for Drucker-Prager plasticity,
+    for both DruckerPrager3D and DruckerPragerPlaneStrain. The first fix
+    was a missing initial pressure term for the plastic multiplier
+    in the Drucker-Prager formulation. This affects plasticity
+    calculations when initial stresses are used. The error has been
+    corrected in the code, the manual, and the unit tests. The second
+    bug was an incorrect test for tensile yield that could cause
+    PyLith to exit with an error when plastic yield had not actually
+    occurred. The error would only occur when the allow_tensile_yield
+    flag was set to False. This bug has been fixed in the code, and the
+    new test is also described in the manual. This should prevent
+    problems that previously existed when allow_tensile_yield was set
+    to False (as it should be for most quasi-static problems).
+
+  - A two-dimensional gravity example has been added, based on the
+    tutorial from the June, 2014 workshop at Stanford University.
+    The tutorial itself is in examples/2d/gravity, and a new section
+    has also been added to the manual describing the example.
+