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이홍우(H.W.Lee),조진래(J.R.Cho),이진규(J.K.Lee),장문석(M.S.Chang),안동수(D.S.Ahn) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
In this paper we discuss the dynamic characteristics of the in-am1 type hydropneumatic suspension unit(ISU). For this, two accurate models are introduced. The first one is the Benedict-Webb-Rubin equation which is adopted for the spring behavior of a real gas. This equation is applicable for the high pressure of the nitrogen gas which acts as a spring in ISU system. The second one describes the behavior of a damper. which is divided into four parts - jounce-loading. jounce-unloading. rebound-loading and rebound-unloading. This approach gives a good approximation of the real damper system. For the comparison purpose. the numerical results of the dynamic behavior of ISU system using a real gas and an ideal gas are given in the paper.