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
Citation: 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

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

doi: 10.3879/j.issn.1000-0887.2013.02.002
  • Received Date: 2013-01-12
  • Rev Recd Date: 2013-01-31
  • Publish Date: 2013-02-15
  • 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.
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