Numerical Exploration of the Hydraulics of a Front Axle Dual Tube Automobile Damper

A front axle dual tube automobile hydraulic damper is studied using ANSYS software. The study is intended to develop a numerical tool to explore automobile hydraulic dampers behavior. The damper contains two piston chambers (Reserve chamber and Work chamber), one cylinder chamber (Compensation chamber) and two valves (Piston valve and Cylinder valve). The fluid geometry is constructed and the fluid transient regime is analyzed, in compression (Bump) and in extension (Rebound), for a reference piston and cylinder valves configuration. Indeed, the fluid pressure and velocity are visualized, for two reference excitation velocities. The damping force is then determined to plot a force-velocity diagram. The fluid pressure, the fluid velocity, and the damping force, versus the excitation velocity, in compression and in extension, were explored. The maximal fluid pressure, fluid velocity, and damping force according to compression and extension, were tracked. The piston and cylinder chambers pressure in compression and in extension, was highlighted. The fluid velocity at the piston and cylinder valves in compression and in extension, was examined. The results are promising in analyzing and predicting automobile hydraulic dampers behavior in order to cut experimentation costs and to understand the dampers dynamics for better designing.