Abstract

The influence of tire belt angle on the Plysteer Residual Aligning Torque(PRAT) and the cornering stiffness by the FEM has been studied. The PRAT is a performance factor of the tire about vehicle pull, and the cornering stiffness has relation to vehicle steering response of outdoor test.
To validate FE model for analysis, simulation data for both the static stiffness(vertical, lateral) and the PRAT have been compared with the experimental data.
In addition to the characteristics of the PRAT and the cornering stiffness due to the tire belt angle, rolling and cornering contact characteristics have been studied. The tendency of the PRAT and the cornering stiffness due to the belt angle can be used as a guide line for the tire design in relation to vehicle pull and vehicle steering response.

• Keywords: Vehicle Pull(차량 쏠림),Belt Angle(벨트각도),Vertical Stiffness(종강성),Lateral Stiffness(횡강성),Slip Angle(슬립각도),Lateral Force(횡력),Aligning Torque(복원 토크),PRAT(Plysteer Residual Aligning Torque, 플라이스티어 잔류 복원 토크),F&M Test(Force and Moment 시험),Cornering Stiffness(코너링 강성)