基于试验扩展法的双层圆柱壳声辐射估算  

Estimation of Radiated Noise of Double Cylindrical Shell Based on Expansion Method in Test

作　　者：彭伟才[1,2] 赵高煜[1,2] 何锃[1,2] 

机构地区：[1]华中科技大学力学系,湖北武汉4300742 [2]工程结构分析与安全评定湖北省重点实验室,湖北武汉430074

出　　处：《中国舰船研究》2010年第3期13-17,共5页Chinese Journal of Ship Research

基　　金：国家自然科学基金项目(10872075)

摘　　要：在总结国内外关于结构噪声预报和估算方法的基础上,提出了一种基于试验扩展的声辐射估算方法,该方法结合数值法和试验法两方面的优点,利用该方法可以通过试验测量内壳的振动而估算出外壳的声辐射,通过数值模型的比较发现,该估算方法简单可行,便于在实际工程中应用;但对其适用性,还需要进一步的试验验证。Based on experiences gained from prediction and estimation of noises for submerged structures,a new method was proposed to estimate the noises for double cylindrical shell. This method integrates the advantages of modal analysis and experimental measurement. By measuring the vibration of the inner-shell, the radiated noise of outer shell can be estimated. The comparison of numerical model shows the concisions and feasibilities of the method. This advantage can be facilitated in practical engineering applications, while its applicability needs for further test verification.

关 键 词：声辐射 双层圆柱壳 扩展法 试验 

分 类 号：O327[理学—一般力学与力学基础]