 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 13205 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8140
|
| In English (Mech. Solids): | | 5065 |
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| Xiaochuan Zhao, Quan Yuan, Qian He, and Lin Lang, "Nonlinear Dynamic Analysis of Vehicle System under Road Excitation Using a Four-Degree-of-Freedom Model," Mech. Solids. 60 (2), 1130-1142 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
2 |
Pages |
1130-1142 |
| DOI |
10.1134/S0025654424604701 |
| Title |
Nonlinear Dynamic Analysis of Vehicle System under Road Excitation Using a Four-Degree-of-Freedom Model |
| Author(s) |
Xiaochuan Zhao (School of Automobile and Transportation, Xihua University Chengdu, 610039 China)
Quan Yuan (School of Architectural and Civil Engineering, Xihua University Chengdu, 610039 China, yuanqxh@163.com)
Qian He (School of Architectural and Civil Engineering, Xihua University Chengdu, 610039 China)
Lin Lang (School of Architectural and Civil Engineering, Xihua University Chengdu, 610039 China) |
| Abstract |
This paper establishes a four-degree-of-freedom half-vehicle model with nonlinear springs
and dampers to study the nonlinear vibration of a car moving on a rough road. According to D’Alembert’s principle, the nonlinear dynamical differential equations of the vehicle system under sinusoidal
road excitation are obtained. A system of first-order differential equations is obtained using nondimensionalization and some techniques for order reduction of nonlinear systems with time. Then it is
used to investigate the effects of damping and frequency ratios on the body displacement, pitch angle,
and displacements of front and rear wheels. The numerical calculation of the equations demonstrates
that the damping and frequency ratios control the nonlinear vibration behavior of the vehicle system.
The proposed model can also predict the possible motion state of the vehicle system under sinusoidal
road excitation at different velocities. The vehicle system will transform periodic motion into chaotic motion. The conclusions provide some available evidence for the design and improvement of the vehicle suspension system. |
| Keywords |
suspension system, four degrees of freedom, road excitation, nonlinear vibrations, numerical calculation |
| Received |
19 July 2024 | Revised |
08 March 2025 | Accepted |
12 March 2025 |
| Link to Fulltext |
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