Elements not defined in template

Altair Forum User
Altair Forum User
Altair Employee
edited July 15 in Community Q&A

Hello! 

 

I am a student taking a modeling class in the context of biomaterials, but I have only had 2 hours of instruction with Hypermesh (with no homework assignments). This means I barely know how to use this program. For our final project my professor wants us to run a simple FEA on a biomaterial that we segmented and remeshed in MIMICS & imported into Hypermesh. This project & report is due Thursday, however my professor is out of town until the day before its due. I have no one to turn to for help & I know everyone else is struggling and having similar issues. 

 

Can someone please take a look at my .hm file and tell me what I need to do to get some sort of FEA results file I can use for my project? The current error is that some of my elements are not defined in the template. I have looked at other forum suggestions but none of them have worked. 

 

I am in desperate need for help. Any type of help will be much appreciated! 

 

Thank you!

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2014

    Hi Kbot,

     

    I can see that no property is defined,

     

    I suggest you to go through the video(s) in the link below and plan your fea model accordingly.

     

    http://training.altairuniversity.com/analysis/structural/linear-static-analysis/analysis/

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2014

    Here are the links for Pre-Processing using HyperMesh:

     

    http://training.altairuniversity.com/modeling/hypermesh-related/

     

    http://training.altairuniversity.com/modeling/

     

    Links for basic structural analysis using OptiStruct:

     

    http://training.altairuniversity.com/analysis/structural/linear-static-analysis/analysis/

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited December 2014

    Please follow the links in the above posts, you can easily self learn using those and other materials in the training center,

     

    the error not defined in the template is because the elements are not assigned the correct type (of card image) 

     

    Before you start your analysis, you must decide which solver you are going to solve your model in, then choose this as the user profile (preferences > user profile). Then before you export or solve your model, you must go to 2d element types and then select all the elements, and update to the element type, without this you will see the error. 

     

    Note also that FEA requires good element quality, your tet collapse is in 50% which means the model has 50% bad elements. before you solve you need to check element quality in tool > check elements. ]

     

    a good place to start is the HyperWorks student guide - http://www.altairuniversity.com/free-ebook-practical-aspects-of-finite-element-simulation-a-study-guide/ 

  • marta96
    marta96 Altair Community Member
    edited September 2020
    Altair Forum User said:

    you must go to 2d element types and then select all the elements, and update to the element type, without this you will see the error. 

     

     

     

    Hi! I am interested in this comment, could you tell me how to go to 2d element types in order to do this?

  • marta96
    marta96 Altair Community Member
    edited September 2020
    Altair Forum User said:

    you must go to 2d element types and then select all the elements, and update to the element type, without this you will see the error. 

     

     

     

    Hi! I am interested in this comment, could you tell me how to go to 2d element types in order to do this?

  • Adriano_Koga
    Adriano_Koga
    Altair Employee
    edited September 2020

    In the panels area (in the bottom), under 2D >> element types

     

    Select all your elements and then update their types to the correct ones.

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.216a6d03da1e7698300578c2f8d7a47e.png

    <?xml version="1.0" encoding="UTF-8"?>image.thumb.png.708d6a5aa90699c1df38afb30a1a2c21.png

  • Kasturi Jadhav
    Kasturi Jadhav Altair Community Member
    edited July 12
    Rahul Ponginan_22560 said:

    Please follow the links in the above posts, you can easily self learn using those and other materials in the training center,

     

    the error not defined in the template is because the elements are not assigned the correct type (of card image) 

     

    Before you start your analysis, you must decide which solver you are going to solve your model in, then choose this as the user profile (preferences > user profile). Then before you export or solve your model, you must go to 2d element types and then select all the elements, and update to the element type, without this you will see the error. 

     

    Note also that FEA requires good element quality, your tet collapse is in 50% which means the model has 50% bad elements. before you solve you need to check element quality in tool > check elements. ]

     

    a good place to start is the HyperWorks student guide - http://www.altairuniversity.com/free-ebook-practical-aspects-of-finite-element-simulation-a-study-guide/ 

    Sir for the error of elements not defined in template I followed the procedure suggested by you in Radioss 2022 student version but still even after updating the elements I am getting same error.

    Can you pls suggest any other method or suggest how this could be fixed.

  • Rajashri_Saha
    Rajashri_Saha
    Altair Employee
    edited July 15
    Kasturi Jadhav said:

    Sir for the error of elements not defined in template I followed the procedure suggested by you in Radioss 2022 student version but still even after updating the elements I am getting same error.

    Can you pls suggest any other method or suggest how this could be fixed.

    Hi Kasturi,

    You can attach the file here.

    Are you using Optisrtuct or Radioss?

    Thanks

    Rajashri

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