I exported the global stiffness matrix for my linear elastic instance in Abaqus, by attaching the following commands to the input file:
** Output Global Stiffness Matrix
*Step, name=Global_Stiffness_Matrix
*MATRIX GENERATE, STIFFNESS
*MATRIX OUTPUT, STIFFNESS, FORMAT=MATRIX INPUT
*End Step
However, the resulting matrix has most of the diagonal elements with very large values, for example:
1635,3, 1635,3, 1.000000000000000e+36
Why is this happening? And how could I solve?
Thanks!