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Hi every one,

I need to consider friction in crack surface and observe its effect on my answer. I want to do it in abaqus. how can I model friction in that surface, because I can identify interaction just for external surface. I am so grateful.

thanks

Hello,

I have written a UMAT subroutin. When I run, the job completes succssefully. But when I try to see results from the ODB files, I get the following error:

"The selected primary variable is not available in the current frame for any elements in the current display group"

I have tried to select the stress, strain and magnitude and all not available. Could anybody help me?

Thanks in advance for your help.

Best regards,

Hello,

I am planing to model a viscolestic material in ANSYS and condition is dynamic.

i have the data of stress relaxation data from experimental Could anyone please suggest how to give material input in ansys taking the data of stress relaxation

weather for dynamic modeling of viscoelastic material in ansys, we should go for curve fitting or prony series

Thanks for your kind help

In ASME BPVC Code Section VIII Div. 2

Primary menbrane + Bending stresses + Secondary Stresses + Peak = Sa 

What's the relationship between the above Sa and the Stress Amplitude in Fatigue cycle curve? Is that a 1:2 or a 1:1 ratio?

Any comments will be appreciated.

Hi everyone,

I want to model friction in crack surface and investigate the effect of it in my modeling. I want to do it in abaqus.

thanks.