[KSCI] Korea Science Citation Index Service

Study on the Damping Performance Characteristics Analysis of Shock Absorber of Vehicle by Considering Fluid Force

Lee Choon-Tae (Department of Mechanical and Intelligent Systems Engineering, Busan National University)
Moon Byung-Young (ILIC (Industrial Liaison Innovation Cluster), Pusan National University)

Publication Information

Journal of Mechanical Science and Technology / v.19, no.2, 2005 , pp. 520-528 More about this Journal

Abstract

In this study, a new mathematical dynamic model of displacement sensitive shock absorber (DSSA) is proposed to predict the dynamic characteristics of automotive shock absorber. The performance of shock absorber is directly related to the vehicle behaviors and performance, both for handling and ride comfort. The proposed model of the DSSA has two modes of damping force (i.e. soft and hard) according to the position of piston. In this paper, the performance of the DSSA is analyzed by considering the transient zone for more exact dynamic characteristics. For the mathematical modeling of DSSA, flow continuity equations at the compression and rebound chamber are formulated. And the flow equations at the compression and rebound stroke are formulated, respectively. Also, the flow analysis at the reservoir chamber is carried out. Accordingly, the damping force of the shock absorber is determined by the forces acting on the both side of piston. The analytic result of damping force characteristics are compared with the experimental results to prove the effectiveness. Especially, the effects of displacement sensitive orifice area and the effects of displacement sensitive orifice length on the damping force are observed, respectively. The results reported herein will provide a better understanding of the shock absorber.

Keywords

Shock Absorber; Damping Force; Displacement Sensitive Orifice; Flow Continuity Equations; Stroke Dependent; Piston Valve; Mathematical Model;

Citations & Related Records

Times Cited By KSCI : 1 (Citation Analysis)
Times Cited By Web Of Science : 0 (Related Records In Web of Science)
Times Cited By SCOPUS : 1

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