A study of center of mass and brake proportional referred to vehicle handling performance : A Study of the position of center on vehicle handling

Abstract

The aim of this research is to study the varieties of weight density distribution affect to the center of mass and vehicle stability. The weight density distribution tester was designed and changed the position of mass. Base on the center of mass is main points of vehicle stability. On the other hand, FMCSA standard was applied to field test for considering of the brake performance and vehicle stability. The results of research discovered to the mass distribution on horizontal plane and fixed position Y1 are absolutely influence under an increasing 50 kilograms of mass condition. For the mass distribution on longitudinal plane and fixed position Z2 and Z3 are affected to the increasing of mass 100 and 150 kilograms respectively. Otherwise, under an increasing of mass 200 and 250 kilograms, there is non-influence to the weight density distribution. In term of the braking performance, it’s depends on the lateral mass distribution especially the center position of mass installed on longitudinal and horizontal plane and close up on the front axle (Y2). For the vehicle stability results, the position (Y2) is the highest influence for yaw rate and sideslip. Otherwise, the position (Y3) or the position of mass installed on longitudinal plane and nearly at the left wheel on the rear axle. Additionally, wheel lock-up condition was appeared on the front axle only. Because the behavior of the weight distribution on front axle was decreased lead to mass distribution on longitudinal plane.