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  1. lawful

    Efficient way to extract eigenvalues/eigenvector matrices

    Greetings, I am working with large Abaqus model and I need to extract its eigenquantities and import them into MATLAB. Is there an efficient way to do this? So far I have extracted the Mass and Stiffness matrices (keywords *MATRIX GENERATE and *MATRIX OUTPUT), imported them into MATLAB (via...
  2. lawful

    Stepped sine simulation on nonlinear component

    Hello, I have a structure with a lap joint which I tested at different forces and found being nonlinear (stepped sine excitation revealed softening behaviour in the FRF). Now I would like to be able to predict the forced response of my FEmodel** by extracting the very same FRF I extracted via...

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