What is the best way to include the lumped mass into a flex body used in the motion view model.

Sreedhar Bollishetty_21390
Sreedhar Bollishetty_21390 Altair Community Member
edited April 2022 in Community Q&A

Hi All,

I have a question related to flexbody modelling in motion view.

question is, what is the best way to add lump mass to flex body, say adding rider mass to frame.

 I tried 3 different options -

1) Fixed the lumpedmass to flex frame using RBE2 .

 2)  Fixed the lumpedmass to flex frame using RBE3

3) Used motion motion spring elements and connected the lumpmass to frame at interface nodes.

Now , I see a difference in the Stress on the frame, using spring elements stress is less.

Can anyone share his experience of best way of modelling the flexbody with lumpedmass.

Thank you in Advance.

Regards,

Sreedhar.

 

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Answers

  • Varun Sharma
    Varun Sharma Altair Community Member
    edited April 2022

    I would rather include the mass in the FE and attach it using either bar or spiders and generate the flexbody before bringing it into MV. Hope this helps. 

     

    Regards
    Varun 

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