Issues with modelling ceramic with JH2
I am trying to model an impact problem where ceramic is used as a part of an armor which is attached to some cohesive elements. I have a couple of questions:
1) When I run my model, I am getting an error:
Error 40510 (SOL+510)
complex sound speed in solid element # 454577 cycle 3490
Does anyone know how I can fix this? I did not have this error before when i used a thinner piece of ceramic (7mm thick), but after making it thicker (20 mm) I am constantly getting this error. I tried to add *MAT_ADD_EROSION card but it does not seem to solve the issue
2) Another issue I having is that when I try to show damage accumulation using History Variable 2, I am getting a very weird colorful Fringe Component, even before impact. I have attached the image to this post.
Any suggestions on how I can resolve these two issues would be greatly appreciated!!!
What is the density of the cohesive element? For a dynamic simulation, you may need reduce the density of cohesive element to avoid the additional mass.
I am using density of epoxy: 1200 kg/m3
I think I may have solved the above issues by redoing my simulation from scratch, but thank you for the help!