文章摘要
汪鸿振,冯革楠.用高频近似计算结构体辐射声场[J].声学技术,1997,(1):1~3
用高频近似计算结构体辐射声场
Calculating structural radiation sound f ield by using high f requency approximation
投稿时间:1995-11-01  
DOI:
中文关键词: 高频近似  辐射声场
英文关键词: high frequency approximation  radiation sound field
基金项目:
作者单位
汪鸿振  
冯革楠  
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中文摘要:
      本文对高频段(ka≥5)结构体辐射声场用高频近似即所谓平面波近似方法来计算。该方法不但避免了通常所用的边界元法(Boundary ElementMethod,简称BEM法)计算结构体辐射声场出现的3个问题:(1)不光滑点处的C(P)因子计算,(2)奇异积分,(3)特征频率处解的非唯一性,而且该方法精度较高,计算量小,便于微机计算。
英文摘要:
      In this paper,the structural radiation sound field in the high frequency band(ka≥5)is calculated by using high frequency approximation i.e.,surface wave approximation,This method avoids three problems associated with the use of Boundary Element Method.They are(1)The calculation of C(p)factorat the nonsmooth point,(2)Singular integration,(3)no nuniqueness of so lution at the chara cteristic frequency.This method also has the advantages of high accuracy,small calculation amount and easy calculation at the personal computer.
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