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  1. r.brown

    Degree of Freedom Ordering of [M] and [K]

    Hi Jason, I've figured out the DOF ordering of [M] and [K] using MapForward and Nod2Bcs. Thanks for your tips. I'm looking for a method to transform them back to the user ordering in MATLAB for other analyses. Do you have any thought on it? Raymond
  2. r.brown

    Degree of Freedom Ordering of [M] and [K]

    I am able to extract the mass and stiffness matrices using the following codes in APDL: *SMAT, MatK, D, import, full, file.full, stiff *SMAT, MatM, D, import, full, 2d_beam.full, mass *export, MatK, mmf, matkMMF.txt *export, MatM, mmf, matMMMF.txt I then read them in MATLAB as two full...

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