How to quickly import material from OS or Radioss to Simlab

alpha_21885
alpha_21885 Altair Community Member
edited October 2020 in Community Q&A

Hi,

 

I have a *.fem file containing Optistruct Material (Linear Elastic) and  *_0000.rad contain Radioss material. How to quickly import to Simlab?

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Answers

  • alpha_21885
    alpha_21885 Altair Community Member
    edited March 2020

    I found work-around solutions for this.

    1) With OptiStruct:

    a) Import all material into HyperMesh

    b) Create a simple tetra mesh and assign one of material for it. (SL cannot import material alone, need mesh along with).

    c) Export to *.fem

    d) Import to SL

    e) in SL >> Export to Material DB or Specification(import specification whenever you want to use)

    129172355_nh.png.61701d2284f97fa7921cc1ee8452b40a.png

     

    But I cannot do the same process for Radioss.

    Perhaps I have to write a Python script to export to *.xml directly.

     

  • Kamalraj
    Kamalraj
    Altair Employee
    edited March 2020

    Hi,

     

    SimLab did not support to import materials alone from solver deck except Abaqus deck. As you said, It should be assigned with some elements, to get import it into SimLab.

     

    The work around you suggested should work for Radioss too. If it is not working, then that material may not have support to import in SimLab.

     

    Please let us know that material details, we will check from our side. 

     

    Thanks,

    KamalRaj

  • alpha_21885
    alpha_21885 Altair Community Member
    edited March 2020

    Thanks Kamalraj for your look at my queries.

    The Radioss material is Johnson-Cook. Attached is input file for your reference.

    SL can input but all material parameters are zero. SL understand only isotropic elastic.

    1744863923_nh.png.c3d25dff1da60e28f980ce24b1761ced.png

    Unable to find an attachment - read this blog

  • Kamalraj
    Kamalraj
    Altair Employee
    edited March 2020

    Hi,

     

    Thanks for sharing the sample deck.

     

    Currently SimLab does not support to import /MAT/PLAS_JOHNS/1 materials. Please refer below image to know about SimLab supports for both read and write.

     

    image.png.4711dd39e6a911b40696bd4f9d4f5d21.png

     

    Let me know the customer details and priority of it, based on that, we will support and let you know. 

  • alpha_21885
    alpha_21885 Altair Community Member
    edited March 2020

    Thanks Kamalraj for your information.

    I just try to use Simlab as another option. My company mainly use HyperMesh only (Electronic industry). Your office may use our products everyday.

     

    I have another question - How to create Law36 in SL? I have a stress-strain curve but do not know how to import to SL.

  • Kamalraj
    Kamalraj
    Altair Employee
    edited March 2020

    Hi,

     

    LAW36 and /MAT/PLAS_TAB both are same as per Radioss document. Please refer below image to define  /MAT/PLAS_TAB. Also refer attached ppt for defining other materials. 

     

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.c80f98512697cfb57fd4608389a98b37.png

     

     

    Unable to find an attachment - read this blog

  • alpha_21885
    alpha_21885 Altair Community Member
    edited March 2020

    Thanks Kamalraj! I got it.

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