Material properties
Material properties
(OP)
In Abaqus there is a way to define Material properties. For example a plastic material with specific yield point. This yield stress is from tensile tests (uniaxial).
My question is how does the program solve a triaxial stress state with this uniaxial parameter. I think it uses comparision stresses like 'von Mises' or 'Tresca' or something totally diefferent? Is there a way to choose which comparison stresses are used?
My question is how does the program solve a triaxial stress state with this uniaxial parameter. I think it uses comparision stresses like 'von Mises' or 'Tresca' or something totally diefferent? Is there a way to choose which comparison stresses are used?





RE: Material properties
RE: Material properties
RE: Material properties
RE: Material properties
RE: Material properties
1. Plasticity: Yield Stress and Plastic Strain
2. Elasticity
etc, etc
When I did a bumper analysis that entered plastic deformation, I actually used Mechanical-->Damage for Traction Seperation Laws. It's largely dependent on the data that you have available. If you don't enter in values for say anisotropic moduli of elasticity...it will only use the one you provided. Same with yield stress and other parameters. It's up to the user to enter in the tabular data in the Mechanical tab (in material properties) to best simulate the plastic deformation.
So the simple answer to your question would be: Mechanical Tab in Matetrial Properties. Use the Plastic option and you can enter in tabular data to get a nice curve. To add a row, right click and insert row above/below.