I have a question regarding the output Stiffness Matrix (get matrix). I have a sandwich structure, with shells and solids, connected with tie constraints. Now i want to get the Stiffness Matrix, therefore i added the command:
*MATRIX GENERATE, STIFFNESS
*MATRIX OUTPUT, STIFFNESS, FORMAT=MATRIX INPUT
After performing in Matlab:
i get the siffness Matrix, which works fine. But for plotting and different calculations, i have to know all nodes with their degree of freedoms considering the rows of the stiffness matrix. Can someone explain me how to export the Nodes with their degree of freedoms considering the rows of the stiffness matrix?