Modal Analysis of an Assembly

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

Hello !

 

I want to make a modal analysis of an assembly made of 2 parts with different properties : one is a kind of plate (mixed-shells elements) and the other one is a solid part (trias elements). These parts are bolted together with some bolts. There is a pic as a simple representation of my assembly.

 

For the bolts I use the bolts creator (1D ==> connectors ==> bolt), but how do I model the contact surface between the two parts ? Because I can see in Hyperview that during the movements the two parts penetrate in each others, because there is no contact.

 

So have you got any suggestions ?

 

Thanks !

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Hi,

    Please go through the tutorial OS-1365: NLSTAT Analysis of Solid Blocks in Contact tutorial in the Help Menu which shows setting up contact between two blocks/components.

  • CdricCd
    CdricCd Altair Community Member
    edited July 2017

    Seems to work perfectly !

     

    Thanks !

     

    I tried with and without the NLPARM card, it has no effect. so in the case of a modal analysis this card is useless ?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Hi,

    The NLPARM command is used to activate nonlinear solution methods and to select the parameters used for Nonlinear Quasi-static Analysis, Geometric Nonlinear Implicit Analysis, and Nonlinear Direct Transient Analysis.and so for your case there is no need to assign this card. 

  • CdricCd
    CdricCd Altair Community Member
    edited July 2017

    Ok thanks for the replies ! :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

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