March 9, 2020 at 12:50 pm
Amin1372
Subscriber

Dear Peter,


So you mean these natural frequencies even if they are very high, don't matter. Am I right? sorry for these fundamental questions. 


And how many natural frequencies do I need to make sure my results will be accurate?


And last thing, how about damping, is that necessary to define it? there is a damping option in solver control  to set it on, is that enough to solve the model with this option?


Thanks