Issues with including gravity in FEA analysis

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

I'm using hypermesh v13 with optistruct and I'm trying to do an analysis that involves both gravity and applied loads. I currently have three load collectors. One for constraints, one for forces, one for gravity. I have created a linear static loadstep for the analysis.

 

In said loadstep, I have assigned the constraints collector to the SPC field. I can then assign either the forces or gravity load collector to the LOAD field within the loadstep, but not both. The analysis takes into account whichever load collector is assigned. So my question is, how do I perform an analysis the includes both applied forces and gravity? I'm assuming I'm missing something simple, but it appears that I can't currently apply both.

 

Thanks!

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2015

    Hi Ehilge,

     

    Please create another load collector with LOAD/LOADADD as card image. 

     

    Refer both gravity and force loads in this load collector and use this in the loadstep.

    <?xml version="1.0" encoding="UTF-8"?>post-7616-0-39518600-1440730005_thumb.jp

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2015

    Thanks you very much! I changed the card image and with a little finagling I got everything sorted out.

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