How to export only mass matrix to an ASCII file (avoid stiffness matrix)

Pedro_Millan
Pedro_Millan Altair Community Member
edited October 2024 in Community Q&A

Dear all, 


Does anyone now how to export only the mass matrix of a structure while avoiding to write the stiffness matrix to the same file?

I am using OUTPUT,MATRIX,FULL,SPARSE, which writes the stiffness and mass matrix to the same ASCII (.full.mat) file. However, since I have a big model, it is taking ages to write the stiffness matrix, because it is consistent. It should be much faster to write only mass matrix (which is the only output I care about) since it is lumped (diagonal). If I could write only the mass matrix to a file, it would be ideal. 

 

Thank you very much.

Best regards,

Pedro Millan

 

 

Best Answer

  • etembras
    etembras
    Altair Employee
    Answer ✓

    Hello Pedro.

    Unfortunately, I believe this is not possible currently.

Answers

  • etembras
    etembras
    Altair Employee
    Answer ✓

    Hello Pedro.

    Unfortunately, I believe this is not possible currently.

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