Question

ANSYS LS-dyna运行错误

*** Error Inertia tensor is too large.
Check input value for density.
Part ID= 3

slave surface of interface = 1
type = 13
surface timestep = 3.495E-05
controlling slave node ID = 94582
part ID of slave node = 2
current minimum time step = 3.495E-05

The LS-DYNA time step size should not exceed 3.495E-05
to avoid contact instabilities. If the step size is
bigger then scale the penalty of the offending surface.

*** Error initialization completed with 1 fatal errors
please check messag file
就是上面这个错误，意思是密度定义有问题吗？可是我检查过应该没有问题的，我的模型PART3是刚体是不是跟这个有关系？应该怎么解决？急死了。。。。。

Answer 1

惯性张量太大。貌似软件认为有两个元婴，一个是你的材料密度，另外一个是time step时间步长，把求解设置的时间步长调来小于3.4e-5试试。