摘要
在整车开发前期,为了尽可能减小排气系统悬挂点位置对整车NVH性能的影响,采用有限元分析的方法对某汽车排气系统的振动模态进行分析,同时利用平均驱动自由度法(ADDOFD)对系统悬挂点位置进行优化。研究结果显示:在汽车开发前期,采用ADDOFD法进行排气系统悬挂点位置的优化布置是有必要的。所做仿真分析研究对于缩短整车开发周期、节约成本、优化性能有重要意义。
In order to reduce the impact of exhaust system vibration on vehicle NVH performance at the early stage of a vehicle design, finite element analysis is used to perform finite modeling and vibration modal analysis on a vehicle＇s exhaust system. Furthermore, a method called average driving DOF displacement（ADDOFD） is used to optimize hanging locations. The result suggests that the ADDOFD method is an effective method for determining hanging locations of exhaust system in the early stage of a vehicle design.Therefore, the simulation analysis presented in this paper could save both time and cost in developing a new vehicle.
出处
《柴油机设计与制造》
2014年第4期12-15,37,共5页
Design and Manufacture of Diesel Engine
关键词
排气系统
模态分析
悬挂点优化
有限元分析
平均驱动自由度法
exhaust system
vibration modal analysis
hanging location optimization
finite element method
ADDOFD method
