We’re putting the final touches on our new badges platform. Badge issuance remains temporarily paused, but all completions are being recorded and will be fulfilled once the platform is live. Thank you for your patience.

Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › Segmentation (fault) error › Reply To: Segmentation (fault) error

December 1, 2023 at 4:35 pm
Alex R.
Ansys Employee

Hello, 

*CONTOL_SOLUTION ISNAN =1 -> The keyword invokes algorithm that looks for  NaN or out-of-range (large values e+20) in quantities like velocity, force, added mass etc. Sometimes segmentation faults occur because the solver is dealing with numbers like that. Then that’s the information what could be wrong in the model. Here is an article that you can take a look https://lsdyna.ansys.com/not-a-number-nan-1/

Here you can also find other tips how to battle a segmentation error https://lsdyna.ansys.com/sigsegv-d61/

Without looking at the model I can only advise to simplify the model, get it to the stage where it is running and then start adding complexity. Please use the latest LS-DYNA release R14.1.

Regarding using Ansys customer support, you will have to contact a personal at your university/company that manages Ansys licensing. They will be able to give you more details if you are eligible for customer support.   

Best regards,
Alex