C.M.S method for reducing dofs

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

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?

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2013
    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.

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