Discontinous stresses after analysis

etrud011
etrud011 Altair Community Member
edited October 2020 in Community Q&A

Hello,

 

I have a double supported beam that I have divided into a non-design and design space. After running an optimization and generating the structure with ossremesh I did an FEA reanalysis on the model. When checking the stress contours I noticed that their were discontinuities between the design and non-design space. Running edge and face equivalence showed that there were no unconnected nodes. Both the design space and non-design space have the same material, but located in different properties.

 

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What could be the problem?

 

Thank you,

-Eric

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Answers

  • Mario_21478
    Mario_21478 Altair Community Member
    edited July 2018

    Hi Eric

     

    I think it depends on how the 'Simple Average' algorithm works.
    By default, the averaging of components stops at component boundaries.

     

    Try to set the switch at Contour->Average Options->Average across component boundary (Button below Averaging method).

     

    If the structure is not connected by nodes (e.g. by contact only) it isn't possible.

     

    Best Regards,

    Mario

     

  • etrud011
    etrud011 Altair Community Member
    edited July 2018

    Hi Mario,

     

    I checked average across boundaries and the discontinuities disappeared. Thanks a lot!

     

    -Eric

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