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B bar method for HM#LIE

wenqing requested to merge wenqing/ogs:b_bar_LIE_HM into master

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.

  1. Feature description was added to the changelog
  2. 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.
  1. Any new feature or behaviour change was documented?
Edited by wenqing

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