How to extract (.pch) reduced matrices when using CMSMETH GM (General Method)?

Pedro_Millan
Pedro_Millan Altair Community Member
edited October 16 in Community Q&A

Dear all,

 

I'm running a model reduction and I would like to extract the reduced matrices as a .pch file (ASCII format) when using CMSMETH GM (General Method).

When I use the CMSMETH CBN (Craig Bampton Nodal), the matrices are correctly output (I am using PARAM, EXTOUT,DMIGPCH and PARAM,MASSDMIG, to print the corresponding stiff and mass matrices, respectively). However, when I use CMSMETH GM (General Method) instead of  CMSMETH CBN (Craig Bampton Nodal), the .pch file is not created. Does anyone know how to overcome this issue? 

 

Thank you all.

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Best Answer

  • Xiaolei
    Xiaolei
    Altair Employee
    edited October 16 Answer ✓

    Hi Pedro, 

    You are right that punch format is not supported for GM method.

    This limitation is due to an accuracy consideration. 

     

     

    Xiaolei

Answers

  • Xiaolei
    Xiaolei
    Altair Employee
    edited October 16 Answer ✓

    Hi Pedro, 

    You are right that punch format is not supported for GM method.

    This limitation is due to an accuracy consideration. 

     

     

    Xiaolei

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