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[Massochy dos santos Ventura]

After having done modal analysis of a steel plate where it extracts the values of natural frequency and vibration modes. I would like to know how to extract the stiffness matrices, mass matrix and vibration mode matrix corresponding to each vibration mode

[Nanda]

Hello Massochy,

You can do this by following this Ansys how to video:

Export the ANSYS Stiffness and Mass Matrix to Text Files - YouTube

Also, have a look at this blog for more information. Hope this helps.

APDL Math–Access to the ANSYS Solver Matrices with APDL - PADT (padtinc.com)

Regards,

Nanda.

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[Massochy dos santos Ventura]

i don´t to see very well the code for export the matrice in first exemple (video youtube)

can you share with me please the code, please

[Nanda]

Hello Massochy,

Here is the code:

! below commands create dense matrix

! Stiffness
*DMAT, MatKD, D, IMPORT, FULL, file. full, STIFF
*PRINT, MatKD, Kdense.matrix

! Mass
*DMAT, MatMD, D, IMPORT, FULL, file. full, MASS
*PRINT, MatMD, Mdense.matrix

! below commands create sparse matrix

*SMAT, MatKS, D, IMPORT, FULL, file. full, STIFF
*PRINT, MatKS, Ksparse.matrix

! Mass

*SMAT, MatMS, D, IMPORT, FULL, file. full, MASS
*PRINT, MatMS, Msparse.matrix

Best,

Nanda

[Massochy dos santos Ventura]

 

thank you so much

 

[Massochy dos santos Ventura]

[Massochy dos santos Ventura]

if i need to extract a 3*3 matrix as i do

[Massochy dos santos Ventura]

hello everyone

 I would like to know how to export the vector of each of the vibration modes