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结构声辐射的声功率模态分析研究

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Indexed by:期刊论文

Date of Publication:2012-02-15

Journal:中国舰船研究

Included Journals:ISTIC

Volume:07

Issue:1

Page Number:35-40

ISSN No.:1673-3185

Key Words:声辐射;声功率模态;模态力;船舶

Abstract:采用声功率模态对结构声辐射的分析和控制进行研究.基于声功率的二次型表达式和Rayleigh积分建立辐射声功率与激励力之间的关系,并在此基础上得出以力为变量的声功率表达式.以板结构声辐射为例,分析声功率模态的振型、声功率模态下的声功率计算和模态截断,并讨论结构声辐射的声功率模态控制方法.通过声功率模态与结构振动模态和结构声辐射模态的对比,系统地阐述声功率模态的特点.

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