Crashbox Simulation

konrad_cure
konrad_cure New Altair Community Member
edited October 2020 in Community Q&A

Hello,

 

I have modelled the crash assembly of our Formula Student Car. For the Barrier, Impact Attenuator and AIP I have followed the tutorial for Modeling and analysis of a honeycomb impact attenuator. Additionaly I have tried to model the Front Bulkhead and Support Structure. When I try to run the simulation it just says Radioss Job Complete in the solver window and does nothing more. I have provided the model and session file below. Maybe someone could point me in the right direction.

 

Best regards, and thanks beforehand,

 

Konrad

 

Unable to find an attachment - read this blog

Tagged:

Answers

  • Andy_20955
    Andy_20955 New Altair Community Member
    edited June 2020

    Hi,

    I reviewed your model and found the following issues,

     

    1) Parts #10, and 11 need to have elements in them and thus should have a PART card image and a material and property assigned to them.

    2) Their is an error with the /DT/AMS option.  We recommend using /DT/AMS mostly for quasi-static cases only so I would remove in your model.

     

    Once I fixed these two issues the model will start to run.  I noticed a few other issues looking at the model in HyperMesh.  The connectors are all yellow which means they aren't realized.  Unless you are interested in the studying the welds, I would suggest just merging the geometry and meshing it as one piece with node to node connections.    If possible, I would convert the solid tube to hex brick elements because they are more accurate then the 1st order tetra you are using.

     

    Thanks,

    Andy

     

Categories