MAT9ORT for cpenta elements

Aidan B
Aidan B Altair Community Member
edited October 2020 in Community Q&A

I'am studying how a components performance is affected by the materials isotropic and orthotropic behaviour. The image attached shows the same 3d solid mesh using hexa and penta elements but with an isotropic material (top) and an orthotropic material (bottom). I'am using mat1 for isotropic and mat9ort for orthotropic.

There is a clear difference in stress for the cpenta elements compared to the chexa. Are cpenta elements fully supported for mat9ort or is this behaviour a result of the cpenta element formulation?

<?xml version="1.0" encoding="UTF-8"?>Isotropic and Orthotropic.JPG

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2018

    Hi @Aidan B

     

    Could you let me know what property are you using for solid elements?

     

    CPENTAs are supported with MAT9ORT. 

  • Aidan B
    Aidan B Altair Community Member
    edited December 2018

    Hi Prakash,

    I'am using the PSOLID property card with defaults except CORDM -1.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2018

    Hi,

     

    Can you use PCOMPLS instead?

  • Aidan B
    Aidan B Altair Community Member
    edited December 2018

    Hi,

    It will be difficult to adapt to a PCOMPLS as the material is not ply based. Orthotropic behaviour is due to the manufacturing process.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2018
    Altair Forum User said:

    Hi Prakash,

    I'am using the PSOLID property card with defaults except CORDM -1.

    CORDM -1 is the element coordinate system and I think this is why you see such results. 

  • Aidan B
    Aidan B Altair Community Member
    edited December 2018

    Hi,

    I have tried both CORDM -1 and BLANK to compare and there is still a noticeable difference in the CPENTA and CHEXA elements. 

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