Research on Chaotic Vibration Characteristics of Nonlinear Half Vehicle Model under Quasi-Periodic Excitation
[1]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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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36卷
Number of periods:
2015 01
Page number:
105-111
Column:
Public date:
2015-01-10
- Title:
- Research on Chaotic Vibration Characteristics of Nonlinear Half Vehicle Model under Quasi-Periodic Excitation
- CLC:
- TP391.9
- DOI:
- 10.3969/ j.issn.1671 -6833.2015.01.026
- 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.
- References:
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