Fluid dynamic vibration absorber for vehicle suspension system

Abstract

The Fluid Dynamic Vibration Absorber (FDVA) is a dynamic vibration absorber where the inductance is gained by translated fluid mass and the capacitance by coil springs. Due to the hydraulic transmission, the FDVA is a lightweight component compared to other dynamic vibration absorbers. As shown in this paper, the FDVA reduces the wheel load fluctuation of a passenger car. After optimisation, the FDVA is integrated into a damper's piston rod. Experiments in a quarter-car test rig show the benefit of the integrated FDVA compared to a standard damper. Excited by a stochastic road profile, the measured benefit with FDVA is $3.5\mathrm{\%}$ more comfort and $4.3\mathrm{\%}$ less wheel load fluctuation.

Keywords:

• Lightweight
• dynamic stiffness
• dynamic vibration absorber
• passive damping
• tuned mass damper
• inerter

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project number 57157498 – SFB805.