Enforced Rotation

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

Hi,

 

I tried to realise  a Direct Frequency Analysis with a enforced rotation around Axis x. My solid component has a cylindrical shape and its revolution axis is the axis x. 

For that, I used Rload2 with a SPCD (I checked Dof4 for the rotation around x). The analysis was completed but the results aren't the ones what i expected.

Indeed, there is well a rotation but there is also an increase of the diameter of my component and I don't understand why.

 

Thank you to help me.

 

Best Regards

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2015

    Hi,

     

    What is the magnitude of rotation?

     

    Is the rotation given in degrees or radians?

     

    try with Radians instead of degrees.

  • ronk_1976
    ronk_1976 Altair Community Member
    edited August 2019

    Did anybody find a solution for the topic above? I'm facing exactly the same issue

     

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited August 2019

    In Optistruct use SPCD for enforced displacement, velocity or acceleration for dynamic analysis. The SPCD units for rotational degrees of freedom is radians.

     

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