Academic Journal of Engineering and Technology Science, 2024, 7(6); doi: 10.25236/AJETS.2024.070619.
Linman Yang1, Yongqiang Liu1, Zan Zhang2
1Department of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China
2Department of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China
This paper presents the structural design and analysis of an oil pressure shock absorber designed to mitigate hunting motion in locomotives. A physical model of the absorber is developed based on the working principles of hydraulic dampers, incorporating force-displacement (F-S) and force-velocity (F-V) characteristics. A parameterized model for the hunting-resistant oil pressure shock absorber is then created. The model is designed to simulate the performance of the absorber under various locomotive operating conditions, including high-speed linear motion and low-speed curve navigation.Key structural and oil-related parameters are considered in the modeling process. The mathematical model of the hydraulic shock absorber is further translated into a Simulink simulation, where the effects of oil temperature, oil pressure, and air bubbles within the hydraulic fluid are evaluated. The results of a bench test validate the accuracy of the simulation model.Finally, the paper applies the orthogonal test method, utilizing the orthogonal optimization approach from applied statistics, to optimize the design parameters of the rail-hunting hydraulic shock absorber.
Preventing hunting motion, Hydraulic shock absorber, Vehicle dynamics
Linman Yang, Yongqiang Liu, Zan Zhang. Simulation research on the performance parameters of snake -shaped oil pressure shock absorber dynamic performance parameters. Academic Journal of Engineering and Technology Science (2024) Vol. 7, Issue 6: 128-137. https://doi.org/10.25236/AJETS.2024.070619.
[1] Zhu, H., Zeng, Q., Wang, Y., and Zeng. Research progress on dynamics performance of high-speed train[J]. Journal of Traffic and Transportation Engineering 21(3), 58–90 (2021).
[2] Changxin Chi., Shulin Liang, Maoru Chi. Research progress on dynamics performance of high-speed train[J]. Journal of Traffic and Transportation Engineering 42(3), 518–523 (2022).
[3] Zunsong Ren. Vehicle system dynamics[M]. 1rst edn. China Railway Press, Beijing (2018).
[4] JIMÉNEZ A, GOMEZ E. Yaw damper modelling and its influence on railway dynamic stability[J]. Vehicle System Dynamics 49(9), 58–90 (2021).
[5] Jia-long Wu. Elastic Mechanics[M]. 3ird edn. Higher Education Press, Beijing (2016).
[6] ZHAO Y W,LIU Y Q,YANG S P,et al.Analysis on new semi-active control strategies to reduce lateral vibrations of high-speed trains by simulation and hardware-in-the-loop testing[J].Proceedings of the Institution of Mechanical Engineers,Part F:Journal of Rail and Rapid Transit236(8):960-972(2022).
[7] BASHIR A O,RUI X,ZHANG J.Ride comfort improvement of a semi-active vehicle suspension based on hybrid fuzzy and fuzzy-PID controller[J].Studies in Informatics and Control 28(4):421-430(2019).