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Dynamic characteristic analysis of a 3-D semi-submerged body as a fluid-structure interaction system

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Abstract

An Arnoldi’s method with new iteration pattern, which was designed for solving a large unsymmetric eigenvalue problem introduced by displacement-pressure FE (Finite Element) pattern of a fluid-structure interaction system, was adopted here to get the dynamic characteristics of the semi-submerged body. The new iteration pattern could be used efficiently to obtain the Arnoldi’s vectors in the shift-frequency technique, which was used for the zero-frequency problem. Numerical example showed that the fluid-structure interaction is one of the important factors to the dynamic characteristics of large semisubmerged thin-walled structures.

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Authors and Affiliations

  1. Department of Engineering Mechanics, Tsinghua University, 100084, Beijing, P.R. China

    Xu Gang & Ren Wen-min

Authors
  1. Xu Gang
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  2. Ren Wen-min
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Corresponding author

Correspondence to Ren Wen-min.

Additional information

Communicated by LI Jia-chun

Foundation item: the National Natural Science Foundation of China (19872036)

Biographies: XU Gang (1974≈), Doctor REN Wen-min (1937≈), Professor, Doctor

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Gang, X., Wen-min, R. Dynamic characteristic analysis of a 3-D semi-submerged body as a fluid-structure interaction system. Appl Math Mech 25, 338–346 (2004). https://doi.org/10.1007/BF02437337

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  • DOI: https://doi.org/10.1007/BF02437337

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Chinese Library Classification

2000 Mathematics Subject Classification

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