Roll Steer, Caster, and Camber

Branch ID: 190

Request Number: 80000190

Table 1.
.plt File .mr, .abf File Component Unit Comment
F1 RESULT(1) Not Used Not Used Not Used
F2 RESULT(2) Left Wheel Roll Steer % (deg/100 deg) The left wheel steer angle change due to out-of-phase vertical deflections of the left and right tire patch points expressed in degrees of axle roll or:

track = abs((right wheel center y) - (left wheel center y))

deltaz = C(3,3)-C(3,9)-C(9,3)+C(9,9)+2/(tire stiffness)

roll steer = (C(6,3) - C(6,9))*track/deltaz*100

F3 RESULT(3) Left Roll Caster % (deg/100 deg) The left caster angle change due to out-of-phase vertical deflections of the left and right tire patch points expressed in degrees of axle roll or:

track = abs((right wheel center y) - (left wheel center y))

deltaz = C(3,3)-C(3,9)-C(9,3)+C(9,9)+2/(tire stiffness)

Orientation A:
roll caster = (C(5,3)-C(5,9))*track/deltaz*100
Orientation B:
roll caster = (-C(5,3)+C(5,9))*track/deltaz*100
F4 RESULT(4) Left Wheel Roll Camber % (deg/100 deg) The left wheel camber angle change due to out-of-phase vertical deflections of the left and right tire patch points expressed in degrees of axle roll or:

track = abs((right wheel center y) - (left wheel center y))

deltaz = C(3,3)-C(3,9)-C(9,3)+C(9,9)+2/(tire stiffness)

Orientation A:
roll camber = -(-C(4,3)+C(4,9))*track/deltaz*100
Orientation B:
roll camber = (-C(4,3)+C(4,9))*track/deltaz*100
F5 RESULT(5) Not Used Not Used Not Used
F6 RESULT(6) Right Wheel Roll Steer % (deg/100 deg) The right wheel steer angle change due to out-of-phase vertical deflections of the left and right tire patch points expressed in degrees of axle roll or:

track = abs((right wheel center y) - (left wheel center y))

deltaz = C(3,3)-C(3,9)-C(9,3)+C(9,9)+2/(tire stiffness)

roll steer = (C(12,3) - C(12,9))*track/deltaz*100

F7 RESULT(7) Right Roll Caster % (deg/100 deg) The right caster angle change due to out-of-phase vertical deflections of the left and right tire patch points expressed in degrees of axle roll or:

track = abs((right wheel center y) - (left wheel center y))

deltaz = C(3,3)-C(3,9)-C(9,3)+C(9,9)+2/(tire stiffness)

Orientation A:
roll caster = -(C(11,3)-C(11,9))*track/deltaz*100
Orientation B:
roll caster = (C(11,3)-C(11,9))*track/deltaz*100
F8 RESULT(8) Right Wheel Roll Camber % (deg/100 deg) The right wheel camber angle change due to out-of-phase vertical deflections of the left and right tire patch points expressed in degrees of axle roll or:

track = abs((right wheel center y) - (left wheel center y))

deltaz = C(3,3)-C(3,9)-C(9,3)+C(9,9)+2/(tire stiffness)

Orientation A:
roll camber = -(-C(10,3)+C(10,9))*track/deltaz*100
Orientation B:
roll camber = (-C(10,3)+C(10,9))*track/deltaz*100