facing error in Abaqus explicit simulation

[sabaribalan ravi]

Hello everyone,


I am trying to run a restart analysis and I get the following error"

"A multi-domain restart analysis has modified the boundary conditions at one or more nodes that are either involved in a kinematic constraint or are part of a rigid body that is involved in a kinematic constraint. Because the domain decomposition is based only on the features specified in the original analysis and steps defined therein, modifying the boundary conditions in the restart analysis would invalidate the original domain decomposition. Please check the boundary conditions at nodes/rigid bodies involved in kinematic constraints. A dummy step may be introduced in the original analysis with the same set of boundary conditions on these nodes as defined in the restart step, to prevent this error."

I defined two steps in original model (Step1 is preload/mounting simulation and Step2 is airbag deploment). After finishing step one i terminated the run and modification i done in second step. (contact, op=new and boundary, op=new)

later, Restart the simulation from second step and im getting the above error.

I attached the inp file images for your reference. Please assist me.

Thanks in advance

 

[FEA way]

If you want to restart from the first step and add the second one then it would be better to include only this preload step in the first input file, let it complete and then use the second restart file starting with *RESTART, READ and including only the second step.

 

[sabaribalan ravi]

Thank you for the suggestion. Its a long running simulation. Already step-1 completed (26hrs). I made mistake in step-2 contact (in original input file).
So, i terminated the simulation and updated the contact in second step and restarting from second step.

 

[FEA way]

You may have to rerun the original analysis with the first step anyway. The error message suggests adding a dummy step to it.