21 November 2014 8 6K Report

I have implemented a VUMAT code for definition of material constitutive equation.  My code works very fine for one element but it does not work for more than one element. ABAQUS throws the Error: "Bad Material definition in element number 1 instance PART-1-1: zero or negative initial dilatational modulus caused by bad material data. Please check your material input and any initial conditions if necessary."

I really appreciate your help.

Ali

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