轿车整体扭转刚度分配比的确定

吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊2): 12-16.

轿车整体扭转刚度分配比的确定

管欣¹, 史建鹏^1,2

1. 吉林大学汽车仿真与控制国家重点实验室, 长春130022;
2. 东风汽车公司技术中心, 武汉430056

收稿日期:2010-10-15 出版日期:2011-09-30 发布日期:2011-09-30
通讯作者: 史建鹏(1973),男,博士研究生。研究方向:汽车CAE仿真。E-mail:shijp@dfmc.com.cn E-mail:shijp@dfmc.com.cn
作者简介:管欣(1961),男,教授,博士生导师。研究方向:汽车动态仿真与控制。E-mail:hsguan@vip.163.com
基金资助:
“863”国家高技术研究发展计划项目(2006AA110101)

Distribution analysis for whole torsional stiffness of passenger car

GUAN Xin¹, SHI Jian-peng^1,2

1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
2. Dongfeng Motor Corporation Technical Center, Wuhan 430056, China

Received:2010-10-15 Online:2011-09-30 Published:2011-09-30

摘要/Abstract

摘要：

采用计算机辅助工程分析(CAE)方法、台架试验和整车扭转试验方法,利用轿车行驶的常用工况,揭示了整车扭转机理。应用非线性插值理论提升了车身扭转刚度仿真值和试验值间的对标精度;对影响整车扭转刚度的车身扭转刚度和悬架系统侧倾角刚度进行了系统性分析。探索出了整体静态扭转测试原理和方法,得到整备车身的扭转刚度是白车身扭转刚度的1.72倍;前、后悬架的侧倾角刚度比例为1.44;整备车身的刚度值是悬架刚度值的10倍;白车身的刚度值是悬架刚度值的5.8倍;整车扭转刚度值是悬架刚度值的11倍,整车刚度值是白车身刚度值的1.89倍。在理论研究的基础上,探索出的3项轿车整体扭转刚度设计的匹配原则,为轿车悬架系统和车身的扭转刚度最佳匹配及整车开发提供了理论依据和设计方法。

关键词: 车辆工程, 车身, 悬架侧倾角刚度, 扭转刚度, 分配比

Abstract:

Based on the methods of CAE,bench testing and vehicle torsion test,the torsional mechanism of vehicle was revealed through using the normal condition.The research promotes the precision of the simulation value of the body torsional rigidity and the testing value by using the theory of non-linear interpolating,and the torsional stiffness of body and the torsional stiffness of suspension were systematically analyzed,and the theoretical basis and test methods for the static torsional stiffness of whole vehicle were provided,namely,the torsional stiffness of the equipped state body is 1.72 times than BIW,the proportion of the front suspension torsional stiffness and rear suspension is 1.44,the torsional stiffness of BIW is 5.8 times than suspension,the torsional stiffness of the equipped state body is 11 times than the suspension,ande the torsional stiffness of the equipped state body is 1.89 times than BIW.On the basis of the theory study,three matching principles are explored.It provides theoretical basis and design methods for the passenger car.The research results have the promotional value of practicability and a wide range of engineering application.

Key words: vehicle engineering, body, torsional stiffness of suspension, torsional stiffness, distribution

中图分类号:

U461.6

管欣, 史建鹏. 轿车整体扭转刚度分配比的确定[J]. 吉林大学学报(工学版), 2011, 41(增刊2): 12-16.

GUAN Xin, SHI Jian-peng. Distribution analysis for whole torsional stiffness of passenger car[J]. 吉林大学学报(工学版), 2011, 41(增刊2): 12-16.

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