https://doi.org/10.4081/jae.2024.1592

Measurement and optimization of nonlinear damping systems for agricultural engineering vehicle cab

Early Access
Published: 17 July 2024
Agricultural engineering vehicles, cab, nonlinear damping, multi-objective optimization
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Authors

Xin Zhang
zhangxinbox@126.com
School of Mechanical Engineering, Taiyuan University of Science and Technology, China.
Yuanyou Liu
School of Mechanical Engineering, Taiyuan University of Science and Technology, China.
Zhanlong Li
School of Mechanical Engineering, Taiyuan University of Science and Technology, China.
Zengliang Xiao
School of Mechanical Engineering, Taiyuan University of Science and Technology, China.

The issue of nonlinear dampness in the cab of agricultural engineering vehicles is examined by analyzing the vibration reduction system of a specific agricultural loader. Firstly, the specific loader was tested under different conditions. Then, the nonlinear vibration reduction system model of the cab–seat–human body is established by using the measured frame vibration signal as input. Finally, the multi–objective genetic algorithm is used to optimize the root mean square (RMS) value of vertical acceleration of the cab and seat. The test results show that the seat vibration is significantly greater than the acceleration of the cab floor under driving and working conditions, so the seat vibration is amplified and the seat parameter setting is unreasonable; the engine and the working device are also an important part of the cab vibration source, in addition to the uneven road surface. Comparing the RMS values of the vertical acceleration of the cab and seat, which were calculated by the model and obtained from the vehicle test, the error does not exceed 6%, indicating that the model’s accuracy meets the requirement. The vehicle experiment proves that the RMS value of the vertical acceleration of the cab and seat is reduced by 16% and 53%, respectively, after optimization. This study provides a theoretical basis for the design of the damping system for the cab of agricultural engineering vehicles.

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How to Cite

Zhang, X., Liu, Y., Li, Z. and Xiao, Z. (2024) “Measurement and optimization of nonlinear damping systems for agricultural engineering vehicle cab”, Journal of Agricultural Engineering. doi: 10.4081/jae.2024.1592.
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