Non-linear Modelling of Dynamic Behaviour of Hydropneumatic Damper and Study the Effect of Inter-Connection in a Half Car Model

摘要

The shock absorber involve losses caused by the flow of hydraulic oil past sharp-edge orifices, restrictive passages and blow-off valves, as well as losses in joints, Coulomb friction, etc. The compliance in chamber walls and in silent blocks and compressibility of the hydraulic fluid also produce stored elastic energy in the component Lastly, the inertia effects of the oil and of the valve parts must be assessed. This paper presents the mathematical model developed to describe the pressure flow phenomena occurring within a shock absorber. On the basis of the geometric construction of a specific shock absorber, adopting different degrees of simplification regarding fluid-dynamic phenomena is considered. The half car model employing this model is studied for interconnection between front and rear dampers.