摘要
首先概述了汽车的行驶平顺性课题研究的意义和背景,随着私家车和重型汽车的需求量不断提高,私家车和重型汽车的行驶平顺性研究变得非常重要,体现了汽车行驶平顺性的建模与仿真分析研究具有的重要意义,介绍了国内外汽车行驶平顺性的建模与仿真研究的现实状况,确定了文章研究的主要议题。本文围绕汽车行驶平顺性的模型建立与仿真分析展开了研究,提出建模与仿真新方法:虚拟激励法的频域及时域仿真,基于有限元思路建立汽车振动结构数学模型的方法,基于变分理论时域数值方法,应用这二者对汽车行驶平顺性建模与仿真展开了研究,得出了有益结论。将平稳随机振动虚拟激励方法应用到了汽车行驶的平顺性仿真分析中,介绍了虚拟激励方法在行驶平顺性的仿真中的应用,探讨了虚拟激励法对于整车行驶平顺性仿真的有效性。
Background and significance were dissertated for vehicle ride comfort research. With requirements of vehicle and heavy trucks increasing, research of ride comfortable becomes more and more important, so, researching of modeling and simulation is very important for vehicle ride comfort. Domestic and overseas status of modeling simulation was introduced to study of vehicle ride comfort, and main contents were defined in this dissertation.New method have been given for modeling and simulation of vehicle ride comfort. They were frequency simulation of pseudo-excitation methods and the methods of mathematical modeling for vehicle vibration structure base on ideas of finite element methods and numerical simulation methods of time field based on the variation theories. They have been applied to investigat modeling and simulation of vehicle ride comfort, better conclusions have been gained. Stationary random vibration pseudo-excitation methods were applied to simulation analysis of vehicle ride comfort. Steps of pseudo - excitation methods applied were introduced for simulation of automobile ride comfort. Different characteristics were compared between pseudo-excitation methods and Fourier analysis methods. Effective of pseudo-excitation method was discussed for simulation of full vehicle ride comfort. Results showed that pseudo-excitation method was equal to Fourier analysis methods for the simulation of automobile ride comfort, but it was better than Fourier analysis method.
出处
《汽车实用技术》
2015年第3期89-92,110,共5页
Automobile Applied Technology
关键词
华晨
汽车
震动
仿真分析
Brilliance
Automobile
Stochastic Vibration, Automobile Ride Comfort
