1. Vibration modelling and testing of off-road vehicle incorporating coupled roll and pitch vibrations.
- Author
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Huang, Peng, Yao, Yanchun, Xiu, Weijia, Wu, Jida, Geng, Duanyang, Yang, Zihan, and Li, Yongsheng
- Subjects
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VIBRATION tests , *OFF-road vehicles , *TIME-domain analysis , *FREQUENCIES of oscillating systems , *COMPUTER simulation , *VEHICLE models , *MATHEMATICAL models - Abstract
To investigate the vibration characteristics of off-road vehicles resulting from external excitations, this study explores a vibration modelling approach that accounts for the coupling of roll and pitch. A low-frequency vibration test was conducted, and the results were analysed in both the time domain and frequency domains. The mathematical model of the tractor was validated, affirming the accuracy of the off-road vehicle modelling method. This study focuses on the Shandong Wuzheng Group Co., Ltd. Renoman 2104 ratio tractor prototype (1:18) as the research subject. A vibration mathematical model and simulation model were developed, taking into account the coupled vibrations in both roll and pitch directions. Key parameters of the tractor, including damping, stiffness, centroid, inertia, and road roughness, were acquired through experimental testing. Upon comparing the numerical simulation model results with the experimental data, the findings reveal a 6.2% error between the left front axle test data and the simulation, and a 6.1% error for the right front axle. The vertical vibration primary frequency in the test is 13.1Hz, while the numerical simulation model registers 11.8 Hz, resulting in a relative error of 10%. Notably, the numerical simulation model exhibits significant consistency with the experimental results. These outcomes serve as a valuable reference for the parameter design and vibration control of off-road vehicles. • A vibration modelling approach of off-road vehicles is proposed. • The coupling vibration of pitch and roll is considered. • The methodology for acquiring tractor dynamic parameters has been elucidated. • An analysis of both time domain and frequency domain results was conducted to validate the mathematical model of the tractor. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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