汽车驱动桥NVH性能分析与优化

为实现汽车驱动桥NVH性能的分析与优化,本文中建立了驱动桥NVH性能分析与优化流程及方法,对分析过程中所应用的有限元、振动响应、声学仿真和拓扑优化等方法进行了综合研究,恰当地选取了分析方法、计算方法、分析软件;然后,以某客车在60~65 km/h加速行驶工况出现噪声大的问题为例进行分析与优化;最后,对优化后驱动桥进行整车NVH测试,验证了所建立的分析流程及方法的有效性。

NVH Performance Analysis and Optimization of Automobile Drive Axle

In order to realize the analysis and optimization of NVH performance of automobile drive axle,the process and method of NVH performance analysis and optimization of drive axle are established.The methods of finite element,vibration response,acoustic simulation and topology optimization analysis used in the analysis process are comprehensively studied.Appropriate analysis methods,calculation methods and analysis software are selected.The noise problem of a bus in 60~65 km/h acceleration driving condition is analyzed and optimized as an example.Finally,the NVH test of the optimized driving axle is carried out to verify the validity of the established analysis process and method.