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- Title
Cavitation phenomenon in hydro-pneumatic interconnected suspension: modeling and parametric analysis.
- Authors
Lin, Dezhao; Yang, Fan; Li, Ruihong; Gong, Di
- Abstract
The nonlinear cavitation phenomenon in suspension system is more likely to appear in the hydro-pneumatic interconnected suspension (HIS) due to the high damping from long connected pipe, and rarely considered in the HIS modeling process. This study aims to establish the HIS model considering the cavitation phenomenon, and then investigates the effect of cavitation on the HIS dynamic performance and the efficient method to avoid it. Firstly, the cavitation phenomenon process in HIS is analyzed based on the single bubble dynamics described by Rayleigh–Plesset model. Secondly, the HIS model considering the switch between the continuous and discontinuous fluid flow modes caused by the cavitation phenomenon is established, and its validity is verified by the laboratory test. Based on the established model, the HIS dynamic performance in a roll-plane off-road vehicle is simulated under both the transient bump and twisted bump road excitation. The simulation results show that the negative effects on HIS dynamic performance, including the acceleration jumping and the separation of the tire from the road, is associated with the cavitation phenomenon. From the parametric analysis, the results suggest that (1) decreasing the loss coefficient of connected pipe is an effective method to avoid the cavitation phenomenon; (2) increasing the initial charging pressure of HIS is another efficient method to avoid the cavitation phenomenon under the condition that satisfying the requirement of the stiffness properties and the suspension stroke. After effectively avoiding the cavitation phenomenon, the high damping property of HIS can enhance the ride comfort performance.
- Subjects
CAVITATION; PARAMETRIC modeling; FLUID flow; BUBBLE dynamics; MOTOR vehicle springs &; suspension; PERFORMANCE of tires; SUSPENSION systems (Aeronautics)
- Publication
Nonlinear Dynamics, 2023, Vol 111, Issue 9, p8173
- ISSN
0924-090X
- Publication type
Article
- DOI
10.1007/s11071-023-08276-2