Error in AcuOptiStruct

Junta_20361
Junta_20361 New Altair Community Member
edited February 2021 in Community Q&A

Hello experts,

I have tried to use the post-processing function in AcuSolve named "AcuOptiStruct"

This function seemed very interesting since it can help us to generate the model for structure analysis from CFD model.

And it can also mapping the result (pressure, temperature) as loads on the structure model, on both steady and transient CFD analysis.

However, when trying with AcuT3110, I found a serious problem.

It comes from the meshing quality.

In CFD model, the min tetra collapse is 0.1.

But the model created by AcuOptiStruct has some collapsed elements (tetra collapse = 0), making it unable to run the analysis.

image

image

GG Drive for the models: https://drive.google.com/drive/folders/1-dH0WCnLdiBYq3sq6cGU3NT1pEkO6zV6?usp=sharing 

Please help me solve this problem.

Or if this comes from the code, please fix this asap.

Thanks in advance!

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Answers

  • acupro
    acupro
    Altair Employee
    edited January 2021

    Did you use SimLab or HyperMesh for the initial AcuSolve model?

    Which version of the software - 2020 / 2020.1 / etc?

  • Junta_20361
    Junta_20361 New Altair Community Member
    edited January 2021
    acupro_21778 said:

    Did you use SimLab or HyperMesh for the initial AcuSolve model?

    Which version of the software - 2020 / 2020.1 / etc?

    Dear acupro,

    Thank you for your response.

    With simlab, this tutorial can be done easily.

    I faced the error when working with hypermesh.

    My version is 20.1 for both hypermesh and acusolve.

    You can find the models in my link in the post.

    Thank you!

  • Junta_20361
    Junta_20361 New Altair Community Member
    edited January 2021

    [Update]

    With the same hypermesh-acusolve model, i exported the inp file & hypermesh.dir folder.

    Then I run the CFD job with AcuSolve VERSION 19. 

    After the CFD job complete, i used AcuOptiStruct version 19 to export the .fem file.

    The new fem file created by AcuOptiStruct v19 is good, no collapsed element found.

    So my conclusion is: the error comes from AcuSolve v20 only.

  • acupro
    acupro
    Altair Employee
    edited January 2021

    I have raised this to the development team, as it appears there's some problem here...

  • Junta_20361
    Junta_20361 New Altair Community Member
    edited January 2021
    acupro_21778 said:

    I have raised this to the development team, as it appears there's some problem here...

    thanks acupro,

    hopefully, they will fix this error in the next version.

  • acupro
    acupro
    Altair Employee
    edited February 2021
    Junta_20361 said:

    thanks acupro,

    hopefully, they will fix this error in the next version.

    With SimLab and HyperWorks CFD as the main GUI platforms for CFD, it seems the tutorials will eventually move just to those.  Thus, efforts will be put there rather than in adjusting/correcting processes for the older tutorials in HyperMesh.

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