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oPTISTRUCT CONTACT

Altair Forum User

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

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Rahul Rajan_21763

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

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

Did you refer attahced File?

Altair Forum User

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"?>

Unable to find an attachment - read this blog

Rahul Rajan_21763

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

Altair Forum User

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

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

HI,

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

Rahul Rajan_21763

is that penetration happens at the end of animation?

Altair Forum User

YES, AT LAST STEP.

Altair Forum User

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

Hi Ashish,

Interchange master and slave and try again.

Rahul Rajan_21763

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