Modernisation of a test rig for determination of vehicle shock absorber characteristics by considering vehicle suspension elements and unsprung masses

Scientific Conference on Automotive Vehicles and Combustion Engines 2016

Maniowski, M.^1 ; Para, S.^1 ; Knapczyk, M.^2

Institute of Motor Vehicles and Internal Combustion Engines, Cracow University of Technology, 37 Jana Pawla II Avenue, Krakow

31-864, Poland^1

BWI Group S.A., Cracow, PL, Poland^2

关键词: 3 degrees of freedom;    Damping characteristics;    High frequency HF;    Input parameter;    Laboratory conditions;    Mechanical characteristics;    Suspension springs;    Wheel suspensions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/148/1/012020/pdf
DOI  :  10.1088/1757-899X/148/1/012020

来源: IOP

【 摘 要 】

This paper presents a modernization approach of a standard test bench for determination of damping characteristics of automotive shock absorbers. It is known that the real-life work conditions of wheel-suspension dampers are not easy to reproduce in laboratory conditions, for example considering a high frequency damper response or a noise emission. The proposed test bench consists of many elements from a real vehicle suspension. Namely, an original tyre-wheel with additional unsprung mass, a suspension spring, an elastic top mount, damper bushings and a simplified wheel guiding mechanism. Each component was tested separately in order to identify its mechanical characteristics. The measured data serve as input parameters for a numerical simulation of the test bench behaviour by using a vibratory model with 3 degrees of freedom. Study on the simulation results and the measurements are needed for further development of the proposed test bench.