wire beam element deletion

[Uniax]

Hi everyone,
I have a model made of wire beams. I am running an explicit analysis. I would like to know if there is a way to delete beams during the analysis whose stress exceeds a certain amount. In my case i would like to delete them once they exceed a value of direct compressive stress.
Thank you for your help.

Best !

 

[FEA way]

Yes, element deletion is supported for beams in Abaqus. Check the documentation chapter "Damage evolution and element removal for ductile metals" for details.

 

[Uniax]

Hi FEA way!
thanks for the answer. But i already tried a lot of things but the problem is that i want the wire to disappear in case of excessive COMPRESSIVE load. The closer i found was *tensilefailure but it only condider positive stress. If i put a negative value then, at the start of the simulation with my truss at 0 MPa it has already suppresed them because 0>-50 MPa for example....
i just want *compressivefailure but this doen t exist....

 

[FEA way]

You can define your own failure criteria using subroutines (like USDFLD) and control element deletion with state variables. Check the documentation chapter "User-defined mechanical material behavior" (paragraph "Deleting elements from a mesh using state variables").

Also, check this thread:

https://www.eng-tips.com/viewthread.cfm?qid=462351