摘要
主要分析了汽车摆振的动力学机理。通过使用解析法从理论上证明了摆振是由位移延时反馈引起的自激振动现象。利用数值分析方法揭示摆振系统的动力学机制及响应行为,验证了解析分析的相关结论。并进一步计算能量输入与能量传递的值,结果表明能量输入可以用来评价汽车摆振的动力学响应。最后根据能量传递规律提出汽车摆振的抑制措施。
This paper analyzes the dynamic mechanism of vehicle shimmy. By using analytic method,it is theoretically proved that vehicle shimmy is a self-excited vibration phenomenon which is caused by displacement feedback with time delay. Moreover,numerical analysis is carried out to reveal the dynamic behavior and mechanism of the shimmy system,which verifies the conclusion of the analytical analysis. Then the energy input and energy transfer are calculated and the results indicate that the value of energy input can be used to evaluate the dynamic response of vehicle shimmy. Based on the analysis of energy transfer,some measures for attenuation of vehicle shimmy are presented at last.
出处
《计算力学学报》
EI
CAS
CSCD
北大核心
2018年第1期35-43,共9页
Chinese Journal of Computational Mechanics
基金
Program for New Century Excellent Talents in University(NCET-10-0358)
the National Natural Science Foundation of China(50975071)
Major Projects of Natural Science Research for Universities in Anhui Province(KJ2014ZD06)~~
关键词
摆振机理
解析分析
时间延时
能量输入
能量传递
shimmy mechanism
analytical analysis
time delay
energy input
energy transfer
