各路英雄豪杰,大家好,最近在HyperMesh中做一个保险杠碰撞的例子,message文件中总有这样的语句出现:
slave surface of interface = 1
type = a 3
surface timestep = 7.204E+00
controlling slave node ID = 1468
part ID of slave node = 4
current minimum time step = 7.204E+00
master surface of interface = 1
type = a 3
surface timestep = 7.058E+00
controlling master node ID = 36
part ID of master node = 3
current minimum time step = 7.058E+00
The LS-DYNA time step size should not exceed 7.058E+00
to avoid contact instabilities. If the step size is
bigger then scale the penalty of the offending surface.