LSDYNA provides user-defined material subroutine, through which you can couple your own material model into the program. In this way you can save a lot of time by avoiding to deal with detailed FEM algorithm.
mjie
You want to write a program by yourself? That may take long time. I think you can try LSDYNA. The program uses explicit algorithm and has several viscoplastic material model.
mjie
You are right. When I increased the heat capacity (or specific heat?), the problem disappeared. Therefore, the problem is because that I used a too small heat capacity, which resulted in very sharp increasing of temperature.
If possible, can you please tell me the parameters you used in your...
I am currently simulating an ultrasonic welding process with LSDYNA. I need to consider heat generation between the frictional surface and couple the heat flux with thermo-stress analysis. As the first step, I tried a simple model with just a few elemnets. I used mat#4, i.e...
