As "externally imposed displacements"
Define them as follows (example):
D7 (dx=25, dy=0, dz=0)
D8 (dx=0, dy=50, dz=0)
D9 (dx=0, dy=0, dz=25)
then combine the displacements as follows and add them at the end of W+T1+P1 (OPE)
D7+3D8
-D7+3D8
D9+3D8
-D9+3D8
0.707D7+0.707D9+3D8
-0.707D7+0.707D9+3D8
0.707D7-0.707D9+3D8
-0.707D7-0.707D9+3D8
D7-D8
-D7-D8
D9-D8
-D9-D8
0.707D7+0.707D9-D8
-0.707D7+0.707D9-D8
0.707D7-0.707D9-D8
-0.707D7-0.707D9-D8
After you built these additional 16 operating load cases, construct your expansion load cases. That's it.
Regards,
Edited by danb (09/18/11 09:45 AM)
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Dan