C.M.S method for reducing dofs

Altair Forum User

Hello.

My model has 2m dofs and i want to run EIGRL and Trancient modal analysis later.

But i want to reduce the solution time.So i want a reducing-method.

So far i know the CMS(Component mode synthesis method with Craig Bampton)

The problem is ,that Radioss does the same time for solving the problem,when i solve it with EIGRL ,comparing,with CMSmethod.

Only difference in CMS is ,that i get also the orthonormalised eigenvalues.But i dont need that.I just need faster results.

Any ideas?

Altair Forum User

Altair Forum User said:

Hello.

My model has 2m dofs and i want to run EIGRL and Trancient modal analysis later.

But i want to reduce the solution time.So i want a reducing-method.

So far i know the CMS(Component mode synthesis method with Craig Bampton)

The problem is ,that Radioss does the same time for solving the problem,when i solve it with EIGRL ,comparing,with CMSmethod.

Only difference in CMS is ,that i get also the orthonormalised eigenvalues.But i dont need that.I just need faster results.

Any ideas?

Have you ever tried EIGRA card ? It is a different method. Do some search from the manuals, it will help you.