Direct transient analysis

narasimhamurthy
narasimhamurthy Altair Community Member
edited October 2020 in Community Q&A

Hi,

 

I am trying to do base excitation with 1g acceleration. But base is fixed to table, I can't assign SPCD acceleration to same nodes. So how can I set up boundary condition for base excitation.

Please suggest me solve this problem.

 

Thanks and regards 

Narasimhamurthy

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited August 2016

    Could you share snapshot of your model with loads & boundary condition?

  • narasimhamurthy
    narasimhamurthy Altair Community Member
    edited August 2016

    hi,

     

    1G base excitation is applied with SPCD constraints in Z-direction and SPC applied on same node in all DOF as shown in below picture.

    The contour result plot showed that the case is moving in Z-direction infinity.

  • narasimhamurthy
    narasimhamurthy Altair Community Member
    edited August 2016

    <?xml version="1.0" encoding="UTF-8"?>11111.JPG

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited November 2020

    See fem file of SPCD usage.

    Unable to find an attachment - read this blog

  • narasimhamurthy
    narasimhamurthy Altair Community Member
    edited November 2020

    Thank you very much,

     

    but in base excitation we have to applied both SPC1, SPC2 and SPCD to same base

    how can i apply SPC1 and SPC2 on same node.

    is there any other way to setup boundary condition?

     

    Please find attached document, here SPC1 and SPC2 are applied in different locations.

    Unable to find an attachment - read this blog

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