oPTISTRUCT CONTACT

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

HI,

I WANT TO DEFINE CONTACT IN OPTISTRUCT, ITS A SIMPLE GEOMETRY SIMILAR TO SNAP FIT.

BUT WHILE CONTACTING  THE SURFACES ARE PENETRATES TO EACH OTHER.

CAN YOU PLEASE SUGGEST ME HOW TO RESOLVE THAT ISSUE

I AM USING QUASI STATIC ANALYSIS WITH SOME FORCE AND NLPARAM

 

Answers

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

    Please find attached sample deck for resolving interference fit in OptiStruct.

     

    You need to make use of Clearance option on the PCONT card to resolve the fit

     

    Hope this helps.

    Unable to find an attachment - read this blog

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    hi thanks for your reply.

     

    clearence make the gap between two surfaces.

    and while visualising its shows an gap between the two surface.

     

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

    Did you refer attahced File?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2020

    YES ,

    I AM EXACTLY FOLLOWING THE SAME PROCEDURE BUT SHOWS THE PENETRATION

    I AM ATTACHING ONE EXAMPLE MODEL TO YOU, PLEASE SEE IT AND KINDLY GUIDE ME , HOW TO RESOLVE THAT ISSUE.

    <?xml version="1.0" encoding="UTF-8"?>SNAP.png

    Unable to find an attachment - read this blog

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

    it run fine & slides properly. I ran in 14.0 version.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

     THAKS FOR YOUR REPLY IN SHORT PERIOD.

    YOU PLEASE SEE THE LAST STEPS, IN  LAST STEPS ITS PENETRATES AND ITS MOVE FURTHER WHEN I INCREASES THE FORCE.

    ITS A VISUALISATION PROBLEM OF ANY THING ELSE.

    MAY B VERSION.

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

    Which version of Hyperworks you are using?I would recommend you to use latest version.

    In above shared pic i see model is penetrating but when i ran same file it works fine.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    HI,

    I UPDATED TO LATEST VERSION 14.0 BUT IT SHOWS THE SAME.

     

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

    is that penetration happens at the end of animation?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    YES, AT LAST STEP.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    HOW I MAY GET THE REALISTIC RESULT.

    KINDLY LET ME KNOW, I WANT TO USE PLASTIC MATERIAL AND WANT TO KNOW HOW MUCH FORCE IS REQUIRED TO CLAMP THE SNAP FIT.

    ITS LIKE FORCE VS DISPLACEMENT.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    Hi Ashish,

     

    Interchange master and slave and try again.

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

    Use PCONT card.Please check my first reply where i had shared deck for interference fit.