How to make contacts in Hypermesh NASTRAN Profile

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

Can anybody help me with creating contacts in hypermesh NASTRAN profile? Previously I have tried to export .dat file from hyermesh to MSC NASTRAN but got excessive pivot ratios error.By using PARAM,BAILOUT,-1command i got the results but the beam was broken from the contacts.

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2018

    Hi Ahmed,
    My search for the solution to this problem has led to only one very vague method and it is very time consuming. Especially if the geometry of the contact surface is not regular i.e. curved in more than 1 axis. Even I myself can't get it to work everytime. Maybe someone else can shed some more light on this.
    It involves manually selecting the MASTER elements and SLAVE elements and then defining their contacts by MANUALLY selecting the node pairs. I don't know if that is what you're looking for but that's the closest thing I have seen in HyperMesh Nastran Profile. It is in the interfaces tab.
    Following this thread so someone can guide better.

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

    Hi Ahmed,
    My search for the solution to this problem has led to only one very vague method and it is very time consuming. Especially if the geometry of the contact surface is not regular i.e. curved in more than 1 axis. Even I myself can't get it to work everytime. Maybe someone else can shed some more light on this.
    It involves manually selecting the MASTER elements and SLAVE elements and then defining their contacts by MANUALLY selecting the node pairs. I don't know if that is what you're looking for but that's the closest thing I have seen in HyperMesh Nastran Profile. It is in the interfaces tab.
    Following this thread so someone can guide better.

    Hi Moghees,

    I have tried this method but there are some problems associated with it; firstly it appears to be much hectic when comparing it to other profiles e.g. Abaqus, secondly  it didn't work in my case (bad luck), still getting same error. There should be some other way to get it done. Anybody can help us on that? 

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