I’m trying to conduct a dynamic simulation of a hyperelastic beam. We applied linear elastic material first successfully.
Then I tried to use hyper-elastic with *dynamic method, but failed. The deformation is very strange and the simulation diverses in the following time steps. The beam deformation is shown after the simulation.
I use SI unit system in the simulation, the dimension of the beam is 0.13m0.01m0.01m.
If I change the unit from m to mm, with a beam size of 1301010, the simulation can be run successfully.
Anyone knows what is the reason and how to avoid it? I can only use SI unit system for some reason.