We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.

Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › applying gravity and earthquake in z direction › Reply To: applying gravity and earthquake in z direction

May 7, 2024 at 11:13 pm
Maryam Tabbakhh
Subscriber

I did that as well but the problem is that the speciment moves and doesn't reach the equalibrium like when there is a real zero boundary condition. I applied the same loading in y direction (the boundary was fixed in z direction during the analysis) so it reaches equilibrium and then I applied the acceleration in horizontal direction. Than'ts why the first solution doesn't work. But by adding the spc birth/death the problem of gravity initialization is solved but it gets unstable after that.Â