I have a 2D linear elastic simulation in AceFEM and for post-processing purposes I would like to print the global stiffness matrix and global displacement vector.
I am able to get the global x and y displacements using:
GlobalUx = SMTPostData("u"); GlobalUy = SMTPostData("v");
from which I can assemble the global displacement vector. (Is there a simpler way?)
My simulation has 2343 nodes and therefore 4686 degrees of freedom. I am attempting to get the global stiffness matrix using
However, the resulting matrix has dimensions of 4563×4563, which is smaller than it should be.
How can I get the full stiffness matrix?
Thanks in advance!