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Using RADIOSS Bulk Data on HyperMesh12

User: "Altair Forum User"
Altair Forum User
Altair Employee
Updated by Altair Forum User

Hi,

I need to add a damping coefficient on my structural analysis. I must add the Rayleigh Damping model (where I define the alpha and beta coefficients).
I've searched on Internet and some people said to use the Radioss Bulk Data profile, but it is unavaliable on Hypermesh 12 because it is called Optistruct (I've read this in another forum). Then, I tried to use the Optistruct profile, but there is no 'Damping' or 'Damp Coefficient' on the control cards. What should I do? Is there any other profile on hypermesh where I can run a transient analysis with damping?
 

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    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    OP
    Updated by Altair Forum User

    Hi jorgelms,

     

    I don't have too much knowledge about your question,but just to help you,you may refer following titles in hyperworks help documents.

     

    file:///C:/Program%20Files/Altair/12.0/help/hwsolvers/hwsolvers.htm?frequency_response_analysis.htm

    file:///C:/Program%20Files/Altair/12.0/help/hwsolvers/hwsolvers.htm?transient_response_analysis.htm

    file:///C:/Program%20Files/Altair/12.0/help/hwsolvers/hwsolvers.htm?param.htm

    file:///C:/Program%20Files/Altair/12.0/help/hwsolvers/hwsolvers.htm?param_alpha1.htm

    file:///C:/Program%20Files/Altair/12.0/help/hwsolvers/hwsolvers.htm?param_alpha2.htm

     

    Hope it helps.

    Regards.

    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    OP
    Updated by Altair Forum User

    Thank you! Now it works!

    As I read those files, I found that alpha1 = alpha and alpha2=beta in the Rayleigh structural damping. 

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