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정비범 (Bee Bum, Jung),백설(Serl, Baik),박천일(Chun Il, Park) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11
Under driving, A vehicle experiences various kinds of load and suspension system support it. Road load causes chassis module’s fatigue failure and car accident. In developing early suspension, Fatigue tests require many times and costs. So It need to fatigue analysis. In this paper, in order to predict the fatigue performance of subframe, two analysis methods compared. Bush type is rubber and tpee in subframe front mounting bush. TPEE bush have more stiffness than rubber. Fatigue analysis method is Static analysis and Modal superposition method. Test results compare to them. Also Effect analysis progress about subframe fatigue performance. Through the paper, Fatigue analysis reliability of subframe is improved.
정비범(Bee Bum, Jung),백설(Serl, Baik),박천일(Chun Il, Park) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
Constant velocity joint boot is a component that protects constant velocity joint from the outside environment and prevents a leakage of grease inside constant velocity joint. In this study, an analysis of the leakage of constant velocity joint boots was performed analytically and compared with the test. The boot material is a TPEE(ThermoPlastic Elastomer) and uses a hyper-elasticity model, and constant velocity joints consist of finite element models. Boot"s contact pressure is a method of detecting leaks and additionally verifying the pressure penetration. There are two methods of testing, and the first test is the pressure test after assembly and the second is the pressure test after the torsional test. After the test, verify that torsion and leakage between boots and housings. The results of the analyses can determine the leakage of tripod type constant velocity joint
정비범(Bee Bum Jung),백설(Serl Baik),민준호(Jun Ho Min) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
Under driving, A vehicle experiences various kinds of load and suspension system support it. Lower control arm(LCA), which is consist of ride and handling bushes and one ball joint connection, is the one of the most important parts in the suspension system. In developing early suspension parts, Buckling of the lower arm frequently generated in chassis module test. So need to analysis standard among development firms. In this paper, in order to predict the buckling load of the LCA more precisely, three analysis methods are newly suggested, that is, nonlinear bush stiffness and subframe stiffness add at A, G bush point and maximum rotation angle of ball joint using ABAQUS connection. Also considering GVW(gross vehicle weight) of the vehicle, define the Ball joint hardpoint. Through the paper, Buckling analysis reliability of LCA is improved.