Suspension system has an important influence on ride comfort and handling stability of vehicles. This paper cites the swing cylinder hydro-pneumatic suspension of tracked vehicles as the study object, and experimental study on the vibration damping performance of the swing cylinder hydro-pneumatic suspension is carried out. Firstly, the mathematical models of stiffness and damping of the swing cylinder hydraulic suspension were established, and the stiffness and damping characteristics of the suspension system were analyzed with road simulation tests. Then, the vehicle body vibration tests under different speed and initial pressure of swing cylinder were carried out. Next, the evaluation index and its quantification algorithm reflecting the performance of the tracked vehicle suspension system were analyzed and proposed, and the weight distribution was achieved by multi-index information fusion. Finally, taking the initial pressure of swing cylinder as the test variable, optimization design and analysis with the initial pressure of the oscillating cylinder as the test variable are carried out. The test results show that the reasonable distribution of the initial pressure of each swing cylinder is of great practical significance to improve the comprehensive vibration reduction performance of the suspension system.

Liyong Niu, Xin Chen, Qihui Ling. Research on the Vibration Reduction Performance of Swing Cylinder Type Hydro-pneumatic Suspension for Tracked Vehicles. Academic Journal of Engineering and Technology Science (2024) Vol. 7, Issue 5: 59-66. https://doi.org/10.25236/AJETS.2024.070508.

[1] Yin Y, Rakheja S, Boileau P E. Multi-performance analyses and design optimisation of hydro-pneumatic suspension system for an articulated frame-steered vehicle[J]. Vehicle system dynamics, 2019, 57(1): 108-133.

[2] Jiao N, Guo J, Liu S. Hydro-pneumatic suspension system hybrid reliability modeling considering the temperature influence [J]. IEEE Access, 2017, 5: 19144-19153.

[3] Zhang H , Sha L , Chen X , et al. Research on Nonlinear Characteristics of Bidirectional Adjustable-le Oil and Gas Suspension System And simulation analysis[J]. IOP Conference Series: Earth and Environmental Science, 2020, 440(5):052050 (8pp).

[4] Zhang X L, Liu J, Nie J, et al. Simulation Analysis and Experiment Research on Hydro‐Pneumatic ISD Suspension[J]. Shock and Vibration, 2021, 2021(1): 2095350.

[5] Yang F, Du Y, Wen C, et al. Optimization design of the hydro-pneumatic suspension system for highclearance self-propelled sprayer using improved MOPSO algorithm [J]. International Journal of Agricultural and Biological Engineering, 2024, 17(2): 109-122.

[6] Lin D, F Yang, Gong D, et al. Design and experimental modeling of a compact hydropneumatic suspension strut[J]. Nonlinear Dynamics, 2020, 100(4).

[7] Ren H, Chen S, Zhao Y, et al. State observer-based sliding mode control for semi-active hydro-pneumatic suspension [J]. Vehicle system dynamics, 2016, 54(2): 168-190.

[8] Xia Y , Fu M , Li C , et al. Active Disturbance Rejection Control for Active Suspension System of Tracked Vehicles With Gun[J]. IEEE Transactions on Industrial Electronics, 2018, 65(5):4051-4060.

[9] Wang S , Lu Z , Liu X , et al. Active control of hydropneumatic suspension parameters of wheel loaders based on road condition identification[J]. International Journal of Advanced Robotic Systems, 2018, 15(6).

[10] Han S, Chao Z, Liu X. A semiactive and adaptive hybrid control system for a tracked vehicle hydropneumatic suspension based on disturbance identification [J]. Shock and Vibration, 2017, 2017(1): 2741786.

[11] Anirban C.Mitra, Tanushri Soni, Kiranchand G.R., Experimental Design and Optimization of Vehicle Suspension System [J]. Materials Today: Proceedings, 2015, 2: 2453-2462.

[12] Chen Y, Gao X, Xu M, et al. Analytical Calculation of Stiffness Characteristics of Swing Cylinder Hydro-Pneumatic Suspension[C]//Journal of Physics: Conference Series. IOP Publishing, 2021, 1986(1): 012104.

[13] Ma W, Zhang G, Wang X. Nonlinear Modelling Analysis of Engineering Vehicle Hydro-Pneumatic Suspension based on ADAMS and Simulink[J]. Electrotehnica, Electronica, Automatica, 2017, 65(3).