Stressed,
Thanks for the quick respsonse.
So the analysis is NL P-Delta with large displacements.
I tried a very simple analysis where I reduced the section size of the bottom chord, and I made it a pin-pin member (before it was fixed). I did this to encourage a compression failure before...
I am having an issue with a non-linear analysis regarding compression resistance.
I am performing a non-linear buckling analysis for a steel truss, with a wind uplift which will result in the bottom chord of the truss in compression. Intuitively, the bottom chord will be the member to buckle as...