moments not working

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

the moments applied on the body seem to be turned off somehow. i have tried changing the nodes where they are acting and even the magnitud. still after the analysis the body shows no stress nor displacement, as if the moments wouldnt exist. does anyone know what my problem could be?

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2014

    Hi Diegoz,

     

    Please make sure that you are not applying moment on temporary nodes.

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited August 2014

    diegoz,

     

    Are you using solid elements?

     

    A solid element has only 3 translational and no rotational dofs hence solids do not support moments applied to nodes. 

     

    In FEA we then need to work around the above fact.

     

    So we create a rigid element connected to the face of the model where the moment needs to be with all its dependent nodes on the solid face and a calculated independent node. 

    (HyperMesh calculates the independent node by itself) 

     

    We then apply the same moment on the independent node. 
  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2014

    Thank you for your reply!

    They were not temp nodes but it is a solid element. so i guess that is the problem. i solved it exactly as you said with the rigid elements.

     

    thank you

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