B bar method for HM#LIE
During the simulation of some 2D project tests using LIE, the volumetric locking was observed in the stress/strain results. This MR implements the B bar method for HM#LIE to handle such locking.
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Feature description was added to the changelog -
Tests covering your feature were added? Yes, a CTest is attached, the strain and stress results of which are improved by using the B bar method.
TODO:
- Jupyter Notebook benchmark of the included benchmark.
- re-use the benchmark of SmallDeformation, Membrane.
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Any new feature or behaviour change was documented?
Edited by wenqing