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Energy Formulation of ELPD (Element Plastic Dissipation) ?

Submitted by shahram on

Hello Everybody

I can not find any theoric formula for ELPD in the ABAQUS theory manual and I need to know if we use eqivalent strees-equivalent strain and integrate to strain of fracture, does it give us plastic dissipation energy of an element?

Integrate[EQStress*d(EQStrain), {0,Fracture Strain}] ?

 Thank you all