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[lsdyna928]

Hello,

I encountered the following error while running my simulation on an HPC  using LS-DYNA R12:

*** Error 41434 (SOL+1434)

Error encountered in SPH neighborhood search routine.

Please check mes#### file for detailed information.

Based on another Q&A on this forum, I increased NMNEIGH in *CONTROL_SPH and ran the simulation again. However, the simulation terminated with the same error. In fact, the error occurred even earlier than before.First run: error occurred at 1.7 s of simulation time. Second run (after increasing NMNEIGH): error occurred at 1.2 s of simulation time. I am using LS-DYNA R12.

Could someone please help me understand: What is the most common cause of this error?

What is the solution?

Is there a way to prevent the simulation from terminating when this error occurs, or is the termination unavoidable?

Any suggestions would be greatly appreciated.

[Nanda]

Hello user,

Could you test any latest solver? R16.1 or R17?

Regards,

Nanda.

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[lsdyna928]

The only version installed is 12.2.1

Is that the only solution for this error?

[ramanb]

Hello,

Could you please check how the particles are being created?

It appears that they may be generated non-uniformly. If that is the case, could you please recreate them using a uniform distribution and verify the results?

Please create these particles using LS-PrePost.

Please let me know your findings.

Regards,
Raman Babu

 

[Nanda]

I can't guarantee that it will resolve. But the SPH code has undergone significant improvements from R12. It could help.

Regards,

Nanda

[ramanb]

Hello,

Could you please check how the particles are being created?

It appears that they may be generated non-uniformly. If that is the case, could you please recreate them using a uniform distribution and verify the results?

Please create these particles using LS-PrePost.

Please let me know your findings.

Regards,
Raman Babu