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CFD Analysis on the Continuous and Variable Damping Characteristics of a Semi-Active Shock Absorber  

윤준원 (군산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.12, no.2, 2004 , pp. 101-108 More about this Journal
Abstract
Recently, a semi-active shock absorber has been taking interest because of its low cost and simple structure than the active one. CFD analysis has been conducted to investigate the continuous and variable damping characteristics of the semi-active shock absorber. Also, the flow resistance characteristics of a spool valve has been examined to identify individual parameters(namely, exponent and discharge coefficient) of pressure-flow rate relation needed for the accurate valve modeling. The flow field in the damping valve was simulated using the commercial code, CFX-5.3. The numerical results showed reasonable agreement with the experimental outputs. The pressure distribution with the variation of spool opening length and volume flow rate were discussed in detail. And the continuous and variable damping performance was found clearly. The individual parameters of spool valve were obtained as a function of orifice area. The exponent and discharge coefficient were fitted in with the first and the third polynomial respectively.
Keywords
Semi-active shock absorber; Continuous and variable damping characteristics; Pressure distribution; Spool valve; Flow resistance characteristics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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