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Concrete Drucker-Prager Softening Material Model — Ansys Learning Forum

Concrete Drucker-Prager Softening Material Model

LeaBLeaB Member Posts: 2

Dear all,

for my master thesis I simulate a Timber-Concrete-Composite Beam. Therefore, I should consider cracks in the tension zone of the concrete slab. First idea was to use a concrete Drucker-Prager softening material model (see picture 1).

I used a patch-test to verify the material model. Unfortunatly, the stress-strain curves under compression and tension are not as I imagined (see picture 2). I attached self-drawn stress-strain curves to show you how they should look like (see picture 3).

Furthermore, there are Solver-Pivot Warnings during the patch-tests, howerver, the calculation works. But for a simply supported beam the calculation doesn't converge. (I have already defined substeps.)

Can someone help me please? Did I define the Drucker-Prager softening wrong?

Thanks in advance!

Lea


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