VehicleTyres
Since 0.6
Fields
| Field | Type | Required | Default | Allowed values | Description |
|---|---|---|---|---|---|
model | VehicleTyreModel | no | clamp, curve | ||
peakSlipRatio | number | no | Longitudinal slip ratio at peak grip, dimensionless and greater than zero; 0.08 to 0.20 covers most road tyres. Ignored by the clamp tyre model, which has no curve to place a peak on. | ||
peakSlipAngle | number | no | Slip angle at peak lateral grip, in RADIANS — not degrees — and greater than zero; 0.10 to 0.20 rad (roughly 6° to 11°) covers most road tyres. Ignored by the clamp model. | ||
muLong | number | no | Peak longitudinal friction coefficient, dimensionless and greater than zero. About 1.0 for a road tyre on dry asphalt, 0.7 wet, 0.3 on gravel. | ||
muLat | number | no | Peak lateral friction coefficient, dimensionless and greater than zero. Usually a little below muLong on a road tyre. | ||
loadSensitivity | number | no | How much grip falls away as vertical load rises, 0..1. 0 makes friction load-independent, the textbook idealisation; raising it is what stops a heavy vehicle cornering as if it were light, and it is why a loaded axle gives less grip than two lightly loaded ones. Ignored by the clamp model. | ||
rollingResistance | number | no | 0 | Rolling resistance coefficient, dimensionless and zero or more: the retarding force is this times the wheel's vertical load, which is what stops a vehicle coasting for ever on a flat road. About 0.010 for a car tyre on asphalt, 0.015 for a heavier one, 0.05 and up on soft ground. Defaults to 0.014. |