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배상우(S. W. Bae),강주석(J. S. Kang),윤중락(J. R. Yun),이재형(J. Lee),이장무(J. M. Lee),탁태오(T. O. Tak) 한국자동차공학회 1997 한국 자동차공학회논문집 Vol.5 No.5
It is difficult for most of passenger cars to attach various types of suspensions. The modular ex-perimental vehicle, which is designed to exchange suspension systems, has been developed to evalu-ate the effect of design changes of a suspension upon ride and handling characteristics of a vehicle. In order to enable the assemblage between modules, the experimental vehicle design is based on a space frame construction through finite element analysis. Moreover, module frames and brackets are designed using three-dimensional solid modeler to check the interference between each part of a vehicle. Steady-state and transient road tests were performed. Multibody dynamic model and sim-plified linear vehicle model are made to compare with the tests. The results of simulations and tests show the performance and validity of this experimental vehicle.<br/>
윤중락(J.R. Yun),배상우(S.W. Bae),강주석(J.S. Kang),이장무(J.M. Lee),탁태오(T.O. Tak) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
In this study, the steady state cornering behavior of a vehicle is analyzed with the vehicle model involving parameters in connection with roll motion. Delft tire model is used to represent nonlinear characteristics of tire cornering force and aligning torque. Sets of nonlinear cornering equations are solved by the Newton-Raphson method. Parameter analysis on handling characteristics of a vehicle is presented<br/>
롤 운동을 고려한 차량의 정상상태 선회주행에 관한 연구
이장무(J. M. Lee),윤중락(J. R. Yun),강주석(J. S. Kang),배상우(S. W. Bae),탁태오(T. O. Tak) 한국자동차공학회 1997 한국 자동차공학회논문집 Vol.5 No.6
In this study, the steady state cornering behavior of a vehicle is investigated by using a numeri-cal model that has parameters associated with roll motion. The nonlinear characteristics of tire cor-nering forces and aligning torques are presented in analytical forms using the magic formula. The sets of nonlinear algebraic equations that govern the cornering motion are solved by the Newton-Raphson iteration method. The vehicle design parameters are measured by SPMD(Suspension Pa-rameter Measuring Device), and its results are verified by carrying out a skid pad test. The design parameters that are most affecting the steady state cornering behavior are classified into four fac-tors, and the contributions of the factors to understeer gradient are then calculated.