bkal, that's just what I'm after. The reaction forces does not matter really, it's just the deflections. I will try to set the deflection to zero (but not the rotation) at the supports and see how good the result becomes. Thanks a lot guys!
Thanks for your swift reply John. But if I set v=0 on two supports, thereby removing two columns, I will have more columns than rows, and the matrix is then over-constrained, is it not? So I must also remove the rows that corresponds to F at the two supports? Thanks again!
Hello everyone. I am pogramming some software for a 1D FEA of a thin beam with multiple pinned supports and loads. It's ends are always free.
I have managed to assemble the global stiffness matrix, but I am not sure how to set the boundary conditions which is needed to make it non-singular...
