中国机械工程2012，Vol.23Issue(14)：1753-1757,5.
基于Sobol＇法的车身噪声传递函数全局灵敏度分析
Global Sensitivity Analysis of Autobodies' Noise Transfer Functions Based on Sobol' Method
摘要
Abstract
In order to overcome the limitations that the local sensitivity analysis can not consider the probability distribution of the parameters,and is not applicable for the obvious changes of parameters and not suitable to analyze the interaction of various parameters, the Sobol' global sensitivity analysis method was introduced into the sensitivity analysis of auto-body's noise transfer function herein. The main idea behind Sobol' method was to decompose the model function f(x) into sums of increasing items whose dimensionality was as 2n. Then the sensitivities can be determined by sampling the parameters and calculating the total variance and partial variance of the model's outputs. It can avoid the weakness of the local sensitivity analysis effectively. Based on the acoustic-structure coupling finite element model, the paper calculated the auto-body's noise transfer function from the suspending point to driver's right ear. The first and total global sensitivity of the related panels thickness was carried out by Sobol' method to discriminate the key factors with strong influences. And according to the guidance of the sensitivity analysis, the auto-body's noise transfer function was optimized. The validity of the Sobol' method were demonstrated by the results of the applications.关键词
噪声传递函数/全局灵敏度/声固耦合/Sobol’法Key words
noise transfer function/global sensitivity/acoustic structure coupling/Sobol' method分类
通用工业技术引用本文复制引用
聂祚兴,于德介,李蓉,姚凌云..基于Sobol＇法的车身噪声传递函数全局灵敏度分析[J].中国机械工程,2012,23(14):1753-1757,5.基金项目
教育部长江学者和创新团队发展计划资助项目 （）
湖南大学汽车车身先进设计制造国家重点实验室自主课题 （）
