Consider the scenario below.  An elastic-plastic rectangular block with circular cut-outs is fixed at the bottom and extended from the top to achieve 25% global strain.   Plane-strain has been used in the out of plane direction, and the specimen is prevented from lateral motion at the upper and lower boundaries.  A compressible Neo-Hookean elasticity model was used, with a von Mises yield criteria and linear hardening.  Dimensions and material properties are given below.  A grid cell size of 0.0025 m was used, with 2 particles/cell in each direction.