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As we may know, non-local plasticity formulations are utilized to reduce mesh subjectivity and eliminate numerical instabilities like snap-back in the response behavior of the materials under...
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we all now about the effect of associativity vs. non-associativity on behavior of materials in the simplest cases, like uniaxial compression test i.e. huge difference in dilation at plastic regime...
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Hi I am trying to look at material instabilities in Lee Fenves non-associated plasticity model (aka Concrete damaged plasticity in abaqus) in form of $\det(E_{t})=0$ looking at element stiffness...
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