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How can I prevent penetration between the impact object and the Vespa frame in the simulation

Hello,

Please help me learn HyperMesh 2024.1 with the Radioss solver. How can I prevent penetration between the impact object and the Vespa frame in the simulation? In the animation, the objects pass through each other.

Please provide the correct settings and instructions to ensure proper contact behavior during the crash simulation.

I have attached the simulation setup file for reference.

Thank you!

Impact Crash Vespa.h3d

Impact Crash Vespa_0000.out

Impact Crash Vespa_0000.rad

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HyperMesh

Radioss

v2024.1.0

Accepted answers

PaulAltair

The contact definition you have is ok (the impactor is slightly too close when you consider the thicknesses so you have initial penetration, but it will still work ok) the issue is that you have fully constrained every node of the vespa, so you have an unstoppable force vs immovable object situation, the vespa can't deform or it would contradict your boundary constraint, if you reduce the constraint to just the area you want to fix, e.g. below then the contact works and the vespa deforms, I've attached the version shown here, you hadn't included your engine (0001.rad) so I created a simple one to run.

ModifiedVespa.zip

All comments

thanks, very helpful

Hello PaulAltair saya ada masalah kembali, saya memodelkan vespa yang untuk terjadi tabrakan dengan pole tetapi dengan hasil arah vespa bergerak ke belakang, mohon untuk bantuan nya, terima kasih

impact crash.h3d

impact crash_0000.rad

PaulAltair

Assuming your initial velocity is correct (should be -ve X in your model in video). Are you sure it isn't impacting and then what you are seeing is the rebound? If the Vespa mesh has quite low mass it may not have enough inertia to damage itself and just be bouncing off?