Manigreat,
I am guessing that you might not have constrained the model. When performing a modal analysis you and you don't constrain the model, the first few (six, depending on the which constraints were omitted) modes calculated will have effectively zero values for frequency. Imagine the...
Manigreat,
The website
http://www.feaservices.com
has a large models archive with pictures of models. Many of these have been optimized. There is also a good optimization article on the same website at:
http://www.feaservices.com/optimization.htm
I created an FAQ on this also. You...
