This tutorial will use the results from the model analyzed in the Natural Frequency (Modal) tutorial. If this tutorial has not been completed, an archive of the model with results, Tower Modal Results.ach, is available in the Tutorials\Models subdirectory of the ALGOR installation directory.
A 150 lbf load will be applied in the X direction to the four nodes at the top of the tower.
The force will be applied at 10, 15 and 25 Hz and at the first five natural frequencies.
A damping ratio of 0.01 will be used.