How to give user defined stress strain curve in abaqus?

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Denis Benasciutti

The true stress-true strain in your plot is not correct. This curve is always monotonic increasing

Henry Schau

I'm agree with Denis.

Martin Baeker

If you really want a negative slope, you may use a damage/failure model, there are several in ABAQUS that can achieve this.

Ahmed Arafat

I agree with Denis, The stress-strain curve should have this form.