反映衬套复杂力学特性的悬架系统动力学模型  

DYNAMIC MODEL OF SUSPENSION SYSTEM REFLECTING COMPLEX MECHANICAL CHARACTERISTICS OF BUSH

作　　者：冯金芝[1,2] 高若奇 郑松林 刘书帆[1] 张启涛 顾晗 FENG JinZhi;GAO RuoQi;ZHENG SongLin;LIU ShuFan;ZHANG QiTao;GU Han(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;CMIF Key Lab for Automotive Strength&Reliability Evaluation,Shanghai 200093,China;Shanghai Huizhong Automobile Manufacturing Co.,Ltd.,Shanghai 200122,China)

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]机械工业汽车机械零部件强度与可靠性评价重点实验室,上海200093 [3]上海汇众汽车制造有限公司,上海200122

出　　处：《机械强度》2022年第3期588-593,共6页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(51375313);上海汽车工业科技发展基金(1616)资助。

摘　　要：动力学仿真是先进悬架系统开发不可缺少的手段,模型的精度影响了产品开发的效率。悬架系统中的衬套部件对整车性能有很大的影响,悬架系统动力学建模时需要准确描述其复杂的非线性力学特性。而多体动力学仿真软件Adams内置的悬架衬套模型仅能粗略地反映其基本力学特性。应用了一种高阶分数导数三单元并联衬套数学模型,这种模型更好的描述了衬套黏弹力单元力学特性中的高阶性和非线性。基于Visual Studio-Intel Visual Fortran平台,结合Fortran语言以及Adams内置函数规则,完成衬套数学模型的编写和编译,搭建了悬架系统动态仿真平台。最后在动态K&C试验台上进行了正弦扫频、水泥裂缝路谱以及“S”弯路谱激励试验,对提出的建模方法进行了验证。Dynamic simulation is an indispensable means for the development of advanced suspension system. The accuracy of the model affects the efficiency of product development. The bushing components in suspension system have a great influence on the vehicle performance, so it is necessary to describe its complex nonlinear mechanical characteristics accurately when modeling the suspension system dynamics. However, the suspension bush model built in Adams can only roughly reflect its basic mechanical characteristics. In this paper, a high order fractional derivative three element parallel bushing mathematical model is applied. This model can better describe the higher-order and non-linear of the mechanical characteristics of the bushing viscoelastic element. Based on Visual Studio Intel Visual Fortran platform, combined with FORTRAN language and Adams built-in function rules, completed the compilation and compilation of bushing mathematical model, and built a suspension system dynamic simulation platform. Finally, sinusoidal sweep frequency, cement crack spectrum and S-curve excitation test are carried out on the dynamic K & C test-bed to verify the proposed modeling method.

关 键 词：非线性动力学 黏弹特性 FORTRAN语言 ADAMS 建模方法 

分 类 号：U461.6[机械工程—车辆工程]