Research Article | OPEN ACCESS
Research on Damping Characteristics of Shock Absorber for Heavy Vehicle
Yongjie Lu, Shaohua Li and Na Chen
Institute of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang, 050043, P.R. China
Research Journal of Applied Sciences, Engineering and Technology 2013 3:842-847
Received: June 13, 2012 | Accepted: July 04, 2012 | Published: January 21, 2013
Abstract
The damping characteristic of shock absorber has an important influence on its design and overall performance of vehicle system. Firstly, the structural features and working principle of hydraulic shock absorber are introduced. Then the detail testing scheme of the shock absorber is proposed and the damping characteristics are tested under both sinusoidal and random displacement excitation (HT-911 dynamic material test platform). The testing data under different excitation frequency and amplitude are analyzed, respectively. The tested results show that the shock absorber has the typical features of non-linearity, non-symmetry and hysteresis. In order to satisfy the vehicle dynamics simulation, the Besinger model is chosen to describe shock absorb nonlinear characteristics. The LSM (Least Squares Method) is utilized to identify seven parameters of Besinger model based on experiment results. Finally, a nonlinear virtual prototype model of heavy duty vehicle is built to prove the fitted shock absorber model effectively.
Keywords:
Damping characteristics, heavy-duty vehicle, hydraulic shock absorber, nonlinear modeling,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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