You need to write a simple UMAT code, in which the stress or strain data from every increment is used to determine several field variables that describe the kind of damage, e.g. fiber broken or inter-layer separation. These filed variables are related to the elastic properties of the material.
In the material section, you need to define the elastic constant matrix with respect to different values of the field variables.
You need to write a simple UMAT code, in which the stress or strain data from every increment is used to determine several field variables that describe the kind of damage, e.g. fiber broken or inter-layer separation. These filed variables are related to the elastic properties of the material.
In the material section, you need to define the elastic constant matrix with respect to different values of the field variables.
Tsai-Wu criteria is already available in abaqus. during defining material go to elasticity and choose lamina/ortho/aniso and in submenu define fail stress. Remember to call the failure components from CFAILURE in field output.
Hope this helps.
Thanks.
For modelling cfrp in abaqus, and define Tsai-wu criteria i used from solid element. but not show Tsai- wu in output.
Please help me
Yes, i select the CFAILUR in field- output, but not show them. my element is solid. is it element for tsai- wu?
thanks
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