ABSTRACT

The previous chapter analyzed the lateral motion of vehicles (coordinate system shown in Figure 15.1), namely translation in the y direction (sideslip) and rotation about the z axis (yaw), as well as lateral tire forces and yaw moments. Chapter 12 considered translational motion in the x direction, acceleration and braking, tractive forces, and a simple model of roll. Tire modeling was discussed in Chapter 13. This chapter considers the remaining three directions: translation in the vertical direction, referred to as bounce, and rotation about the x and y axes, referred to as roll and pitch, respectively. These three motions describe the ride properties of a vehicle.