Add a moment to the top of a 3D cylinder

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

Hello,

 

I'm trying to do a simulation with HyperMesh on a cylinder with the bottom fixed and a axial moment on the top.

As suggested, I create a node in the middle of the top surface of cylinder and use RBE3 to tie the node and every node of the top surface together with dof123456 activated. Then I apply a axial moment on the node I created. But the simulation doesn't work: there is only a disk in the result.

When I change the moment in to a normal force, it works, so I think the problem lies in the moment.

Could you help me?

 

Thanks!!

<?xml version="1.0" encoding="UTF-8"?>image.thumb.png.c869fcacd8b52549abb8ff0f631986f8.pngimage.png.995b782a22d1d22f7f79d9db0283377e.png

 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited September 2018

    Hi jiadong.wang,

     

    Please can you share your model.

     

    Thank you

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited September 2018
    Altair Forum User said:

    Hello,

     

    I'm trying to do a simulation with HyperMesh on a cylinder with the bottom fixed and a axial moment on the top.

    As suggested, I create a node in the middle of the top surface of cylinder and use RBE3 to tie the node and every node of the top surface together with dof123456 activated. Then I apply a axial moment on the node I created. But the simulation doesn't work: there is only a disk in the result.

    When I change the moment in to a normal force, it works, so I think the problem lies in the moment.

    Could you help me?

     

    Thanks!!

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.c869fcacd8b52549abb8ff0f631986f8.png<?xml version="1.0" encoding="UTF-8"?>image.png.995b782a22d1d22f7f79d9db0283377e.png

     

    Can you constrain the Y translational and release the rotation and check the results?

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