Interference fit

Karthic_22061
Karthic_22061 Altair Community Member
edited October 2020 in Community Q&A

HI,

Is it possible to simulate interference fit problem in RADIOSS... If so can you share me a tutorial.

 

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Answers

  • Andy_20955
    Andy_20955 New Altair Community Member
    edited November 2020

    There are two options for interference fit.  First you can simulate the physical press fit process in RADIOSS.  Define contact between the two parts, constrain one part and apply an imposed displacement on the other part and simulation the physical press fit process.

     

    Second option is to use /INTER/TYPE24 contact and set INACTI=-1 which will apply forces to remove initial intersection caused by the press fit.  The one limitation with INACTI=-1 is that it applies the force all at once and for large initial penetrations the force can be too large.  To reduce the force you can use the STFAC option on /INTER/TYPE24.  In the attached model, STFAC=0.25 seems to give reasonable results.  Run the model with STFAC=1 (default) see the difference.    I ran the attached model in RADIOSS version 2017.1 but 14.0.230 or 2017.0 should also be fine.

    Unable to find an attachment - read this blog

  • Karthic_22061
    Karthic_22061 Altair Community Member
    edited May 2017

    Thank you Andy :)/emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

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