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International Journal of Automotive Technology > Volume 19(5); 2018 > Article
International Journal of Automotive Technology 2018;19(5): 801-810.
doi: https://doi.org/10.1007/s12239-018-0077-1
INVESTIGATION OF CAVITATION PROCESS IN MONOTUBE SHOCK ABSORBER
Viktor Skrickij1, Dzmitry Savitski, Valentin Ivanov, Paulius Skačkauskas1
1Vilnius Gediminas Technical University
2Technische Universit
3Technische Universit
ABSTRACT
The paper investigates cavitation effect which negatively influences the performance of a monotube shock absorber of road vehicle (passenger car). For better understanding of this phenomena, three physical models of shim stack valves are analyzed. Validation results allowed selecting the most appropriate valve model in presence of cavitation processes. A mathematical model of monotube damper with consideration of fluid compressibility and cavitation phenomena is developed. Simulation results are validated by experimental data obtained on hydraulic test rig. Based on the selected approach, a simplified method suitable for assessment of cavitation processes in automotive monotube shock absorbers is proposed. After investigation it is found that damping force when cavitation occurs mainly depends on the initial pressure and absorber inner diameter.
Key Words: Monotube shock absorber, Cavitation, Mathematical modelling, Shim stack
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