The B-bar method
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1406513649 commented
It seems that the B_bar method adopted in 'PlaneStrain.h' is not the common B_bar, but a specific Selective integration formulation , the B_bar is usually referred to as the mean-dilatation formulation.
*reference 'Generalization of selective integration procedures to anisotropic and nonlinear media' Hughes 1980
PANFACTORY commented
Thank you for your advise.
I am now ordering the paper, and going to update the code after that.
I appreciate your continuous support for PANSFEM2.