롤 운동을 고려한 차량의 정상상태 선회주행에 관한 연구

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.