Vibration Wave Propagation Characteristics Optimization Analysis ofthe Typical Pedestal on Double Cylindrical Shell

ZHENG Lü; PANG Fuzhen; YAO Xiongliang; KANG Fenghui; CONG Gang; CHEN Lin

doi:10.3969/j.issn.1673-3185.2012.04.011

Volume 7 Issue 4

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ZHENG Lü, PANG Fuzhen, YAO Xiongliang, KANG Fenghui, CONG Gang, CHEN Lin. Vibration Wave Propagation Characteristics Optimization Analysis ofthe Typical Pedestal on Double Cylindrical Shell[J]. Chinese Journal of Ship Research, 2012, 7(4): 63-68. doi: 10.3969/j.issn.1673-3185.2012.04.011

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Vibration Wave Propagation Characteristics Optimization Analysis ofthe Typical Pedestal on Double Cylindrical Shell

doi: 10.3969/j.issn.1673-3185.2012.04.011

School of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China

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Corresponding author: ZHENG lv
Received Date: 2012-03-19
Accepted Date: 2012-08-20
Rev Recd Date: 2012-04-05
Publish Date: 2012-08-25

Abstract

This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

According to impedance mismatch and wave mode conversion in heterogeneous structure which based on wave analysis method，the characteristics of vibration wave propagation in typical submarine structure were studied. Based on this，vibration and noise reduction performance of artificial transmission loss base was analyzed through FEM/BEM coupled method. By reviewing vibration wave transmission characteristics for composite plate，the conclusions are drawn that the structure impedance changes，when the structure cross section mutates. Thus，leading to impedance mismatch between the structures，so the vibration wave will reflect and transmit in the mutant cross-section，and reduce the transmission rate of vibration. An artificially constructed transmission loss base was designed using the theory，and the vibration and noise reduction performance of the base was verified by FEM / BEM coupled method.
- wave theory,
- wave converter,
- impedance mismatch,
- finite element,
- boundary element,
- ship

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