Wheel

Spring

This motion ratio is wheel displacement divided by spring displacement (e.g. a ratio of 0.5 means that for every 1mm/in of wheel displacement the spring will displace by 2mm/in). The wheel displacement is the combined X, Y and Z displacement of the tire’s contact patch relative to the chassis. The spring displacement is measured along the axis of the spring (line drawn from spring attachment to chassis points). This motion ratio is calculated at each step of the simulation by raising and lowering the associated wheel by a given amount and then calculating the motion ratio based on the spring displacement.

Damper

This motion ratio is wheel displacement divided by damper displacement (e.g. a ratio of 0.5 means that for every 1mm/in of wheel displacement the damper will displace by 2mm/in). The wheel displacement is the combined X, Y and Z displacement of the tire’s contact patch relative to the chassis. The damper displacement is measured along the axis of the damper (line drawn from damper attachment to chassis points). For Coilovers the damper axis is a line drawn from spring attachment to chassis points. This motion ratio is calculated at each step of the simulation by raising and lowering the associated wheel by a given amount and then calculating the motion ratio based on the damper displacement.

ARB - Dist

This motion ratio is wheel displacement divided by anti-roll bar displacement (e.g. a ratio of 0.5 means that for every 1mm/in of wheel displacement the anti-roll bar will displace by 2mm/in. The wheel displacement is the combined X, Y and Z displacement of the tire’s contact patch relative to the chassis. The anti-roll bar displacement is the total displacement of the lever arm(s). This motion ratio is calculated at each step of the simulation by raising and lowering the associated wheel by a given amount and then calculating the motion ratio based on the anti-roll bar displacement.

ARB - Angle

This motion ratio is wheel displacement divided by anti-roll bar Angle (e.g. a ratio of 0.5 means that for every 1mm/in of wheel displacement the anti-roll bar will rotate by 2 deg/rad. The wheel displacement is the combined X, Y and Z displacement of the tire’s contact patch relative to the chassis. The anti-roll bar angle is the rotation displacement of the anti-roll bar’s lever arm around the shaft. This motion ratio is calculated at each step of the simulation by raising and lowering the associated wheel by a given amount and then calculating the motion ratio based on the anti-roll bars angular displacement.