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What should we do for a Modal Analysis?

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asked by about MSC.ADAMS Online Help
edited by

I want to do the analysis of an differential axle. The axle components are represented by rigid body structures. Elasticities are modeled at the connection points (rubber mounts) and now I want to replace all the rigid parts by flexible parts and do the dynamic analysis. As far as I know, to create flexible bodies, I should adopt the folling method:

  1. Create geometry in adams flex.
  2. Mesh it.
  3. Input properties details.
  4. Create interfacing nodes (using Rich Body Elements).
  5. Modal analysis.
  6. Save as .mnf and import as per the regular procedure.

Now I am facing problems with the 4th and 5th steps. I just don't know what exactly modal analysis is? How to do a modal analysis and how to determine what frequency should I give input? Also what are all the places where we have to provide interfacing modes?

2 Answers

0 votes
answered by (236k points)

I would like to recommend checking the official website of the MSC.Adams. There are plenty of documents, free webinars, and resources available for this application. Since it requires extensive knowledge regarding CAD manipulation and structure calculation, the only way to get answers to your issue is with their help. If you are an active customer, go to Active Videos section on the right menu to watch how to work with the software.

Official website:

0 votes
answered by
edited by

Modal analysis is the study of the dynamic properties of systems in the frequency domain. A typical example would be testing structures under vibrational excitation. Modal analysis is the field of measuring or calculating and analysing the dynamic response of structures and/or fluids or other systems during excitation.

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