统计能量方法振声响应的损耗因子参数灵敏度分析  

Parameter Sensitivity Analysis of Loss Factors of Vibroacoustic Response in Statistical Energy Method

作　　者：蔡延年 张文春 李忞 王铁钧 石巍 CAI Yannian;ZHANG Wenchun;LI Min;WANG Tiejun;SHI Wei(CCRC DALIAN Co.,Ltd.,Dalian 116026,Liaoning,China)

机构地区：[1]中车大连机车车辆有限公司,辽宁大连116026

出　　处：《噪声与振动控制》2025年第1期80-83,88,共5页Noise and Vibration Control

摘　　要：为了量化损耗因子对统计能量方法中振声响应的影响能力,以声腔-板件-声腔三子系统统计能量分析模型为研究对象,基于能量守恒原理建立矩阵形式的功率流平衡方程,提出振声能量损耗因子参数的灵敏度计算方法,分析每个子系统能量响应受各子系统阻尼损耗因子及子系统间耦合损耗影响程度的宽频段计算结果。计算结果明确两类损耗因子的参数灵敏度排名情况,指出在设计阶段为了降低分析维度可以忽略的参数,定量分析在不同频段内改变各子系统能量的高效方式,可为此类典型的减振降噪问题提供参考。In order to quantify the effect of loss factors on the vibroacoustic response in statistical energy analysis,a three-subsystem model of cavity-plate-cavity was taken as the research object.The power flow equilibrium equation was established based on the principle of conservation of energy in the matrix form,the parameter sensitivity analysis of the loss factors was derived,and the influence of the damping loss factors of the subsystems and the coupling loss factors between subsystems on the energy response of each subsystem was analyzed in the wide frequency band.According to the results of calculation,the sensitivity rankings of the two types of loss factors are clear,and the parameters which can be ignored in order to reduce the dimension of analysis in the design stage are pointed out.This article quantitatively analyzes the efficient way of changing the energy of each subsystem in different frequency bands,which may provide a meaningful reference for vibration and noise reduction of similar systems.

关 键 词：振动与波 损耗因子 统计能量分析 灵敏度分析 

分 类 号：TB532[理学—物理]