重庆理工大学学报（自然科学版）2017，Vol.31Issue(5)：6-13,8.DOI:10.3969/j.issn.1674-8425(z).2017.05.002
汽车轮心力振动噪声贡献率计算方法对比研究
Comparative Studies on Methods for Computing Wheel Center Forces' Contribution to Vehicle's Noise and Vibration
摘要
Abstract
Vehicle's wheel center forces belong to correlated excitations.Multi-reference transfer path analysis (MTPA) and virtual coherence method are the methods to calculate the contribution rates of correlated excitations.However, there are few comparative studies on these two methods.Firstly, the basic theory of these two methods is elucidated, and the physical meaning of the two is analyzed and compared on the basis of proposing the correlated excitation energy flow model.Experiments on identification of road surface excitation were carried out.The results showed that the MTPA method and the virtual coherence method can separately describe the energy flow model for the wheel center forces, the vehicle system and the target point response from different aspects.Using these two methods at the same time can get a more comprehensive understanding of the contribution rates of vehicle wheel center forces to the target point response.关键词
汽车轮心力/振动噪声/贡献率/多参考传递路径分析/虚相干Key words
wheel center force/vibration and noise/contribution rate/MTPA/virtual coherence分类
交通工程引用本文复制引用
王策,杨志坚..汽车轮心力振动噪声贡献率计算方法对比研究[J].重庆理工大学学报（自然科学版）,2017,31(5):6-13,8.基金项目
国家自然科学基金资助项目(51475169) （51475169）
