TLycan
Structural
- Aug 24, 2012
- 94
Dear all,
I have the following problem. I am trying to find the buckling load for the beam in attached SAP file. The following are the strange results I’ve got:
Eigen Value buckling (buckling analysis) = 39X1 tons
P-Delta Non-linear analysis = 9 tons
P-Delta + large displacement Non-linear analysis = 72 tons
Though I know that the buckling load is near the 39 tons , the more important question why is there so much difference between the difference analyses, and even more important why is there a difference between P-delta and P-Delta + large displacement
Note: the file may take a bit while running also refer to the plot function of joint 393
I have the following problem. I am trying to find the buckling load for the beam in attached SAP file. The following are the strange results I’ve got:
Eigen Value buckling (buckling analysis) = 39X1 tons
P-Delta Non-linear analysis = 9 tons
P-Delta + large displacement Non-linear analysis = 72 tons
Though I know that the buckling load is near the 39 tons , the more important question why is there so much difference between the difference analyses, and even more important why is there a difference between P-delta and P-Delta + large displacement
Note: the file may take a bit while running also refer to the plot function of joint 393