Comparative Study on Multiple Multi-Level Substructure Method and Modal Synthesis Method

ZHANG Sheng; BAI Yang; YIN Jin; CHEN Biao-song

doi:10.3879/j.issn.1000-0887.2013.02.002

Volume 34 Issue 2

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Article Navigation > Applied Mathematics and Mechanics > 2013 > 34(2): 118-126

ZHANG Sheng, BAI Yang, YIN Jin, CHEN Biao-song. Comparative Study on Multiple Multi-Level Substructure Method and Modal Synthesis Method[J]. Applied Mathematics and Mechanics, 2013, 34(2): 118-126. doi: 10.3879/j.issn.1000-0887.2013.02.002

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Comparative Study on Multiple Multi-Level Substructure Method and Modal Synthesis Method

doi: 10.3879/j.issn.1000-0887.2013.02.002

State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian, Liaoning 116024, P.R.China

Received Date: 2013-01-12
Rev Recd Date: 2013-01-31
Publish Date: 2013-02-15

Abstract

Abstract

The multilevel substructure method was compared with the traditional dynamic substructural modal synthesis method (the super element method for MSC.Nastran). By using Lanczos method and technology of substructure tree travelling, the contribution of the multilevel substructure method’s internal freedom of substructure for the whole solution is considered. The result could be improved significantly, and which also had the same calculation accuracy with the overall structure without condensation. The numerical results show that the multilevel substructure method is more flexible than the traditional modal synthesis method in dividing substructure and calling multilevel substructure, which is not limited by the complex substructure and more accurate at higher frequencies.
- multi-level substructure,
- component mode synthesis method,
- super element,
- Lanczos method

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References(10)

References

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