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Elastic material in abaqus
Dear all,
I am using Abaqus to model concrete as an elastic material. However, the failure criteria available in the software is only for 2D elements and are dominated by a maximum normal stress (fail stress option) or normal strain (fail strain option) value.
I was wondering if anyone would know how to model concrete as an elastic material following "theory of elasticity" and failing by a maximum TENSILE strain value in any of the three directions given a material's point.
It would also be perfect if deleting elemnts option can be used in this case.
NOTE: this model does not involve any form of plasticity or post failure mechanisms...ONLY first cracking limits
Any help would be very much appreciated
Thanks
Hussam Nasreddin
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Use Explicit?
You may have already tried this, but if you can run the problem in Explicit there are a number of failure criteria available with element deletion after failure. The failure models require plasticity to be defined, but maybe you can define a very small plasticity range that doesn't affect your solution. This approach may create other problems for you, but it will work with 3D elements and will automatically delete failed elements.
http://www.invariantlabs.com