[1]杨智勇,梁山,周桐.拟周期激励下非线性半车模型的混沌振动研究[J].郑州大学学报(工学版),2015,36(01):105-111.[doi:10.3969/ j.issn.1671 -6833.2015.01.026]
　YANG Zhi-yong,LIANG Shan,ZHOU Tong.Research on Chaotic Vibration Characteristics of Nonlinear Half Vehicle Model under Quasi-Periodic Excitation[J].Journal of Zhengzhou University (Engineering Science),2015,36(01):105-111.[doi:10.3969/ j.issn.1671 -6833.2015.01.026]
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拟周期激励下非线性半车模型的混沌振动研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
36卷
期数:
2015年01期
页码:
105-111
栏目:
出版日期:
2015-01-10

文章信息/Info

Title:
Research on Chaotic Vibration Characteristics of Nonlinear Half Vehicle Model under Quasi-Periodic Excitation
作者:
杨智勇; 梁山; 周桐
1.重庆工程职业技术学院信息工程学院，重庆402260;2.重庆大学自动化学院，重庆400044
Author(s):
YANG Zhi-yong1; 2; LIANG Shan1; ZHOU Tong1
1.College of lnformation Engineering，Chongqing Institute of Engineering，Chongqing 402260，China; 2.College of Automa-tion，Chongqing University ，Chongqing 400044，China
关键词:
拟周期; 非线性车辆; 半主动悬架; 混动振动
Keywords:
quasi-periodic;  nonlinear vehicle ;  semi-active suspension;  chaotic vibration
分类号:
TP391.9
DOI:
10.3969/ j.issn.1671 -6833.2015.01.026
文献标志码:
A
摘要:
为了克服单一频率路面激励下车辆悬架模型不能真实反映实际车辆的非线性动力学特性问题,建立了双频拟周期动态路面激励函数,并构建了4自由度非线性1/2车辆悬架模型.运用庞加莱图、相位图,功率谱密度分析了车辆4自由度非线性半主动悬架模型通过凹凸不平路面时的动力学特性,得到了系统发生混沌振动时的激励振幅和振动特性,即车辆通过凹凸不平路面时的振动特性为:拟周期→过渡态→混沌态.同时通过调整弹簧刚度系数,有效抑制了混沌振动的发生.研究结果表明:双频拟周期激励下的4自由度非线性半主动悬架模型模拟更能接近实际情况,这有助于汽车悬架的设计和路面铺装设计.
Abstract:
To overcome the problem that the vehicle suspension model of the single periodic excitation roaddoes not truly reflect the nonlinear dynamics characteristics of the actual vehicle,the paper establishes a quasi-periodic dynamic road excitation function,and builds a four-degree of freedom nonlinear half vehicle suspen-sion model. Using the Poincaré map,phase diagram,power spectral density to analyse the nonlinear dynamicscharacteristics of the four degrees of freedom semi-active vehicle suspension model on uneven road surface,weobtain the amplitude of chaotic vibration and its vibration characteristics which is quasi-periodic →transitionstate → chaotic state as the vehicle through uneven road surface. At the same time,the occurrence of chaoticvibration can be inhibited effectively by adjusting the spring stiffness coefficient. The results show that the sim-ulations of the four degrees of freedom nonlinear semi-active suspension model under dual-frequency quasi-pe-riodic excitation is more closer to the real situation,which helps the design of vehicle suspension and pave-ment.
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