#include <PxVehicleComponents.h>
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| PxReal | mLatStiffX |
| | Tire lateral stiffness is a graph of tire load that has linear behavior near zero load and flattens at large loads. mLatStiffX describes the minimum normalized load (load/restLoad) that gives a flat lateral stiffness response to load. More...
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| PxReal | mLatStiffY |
| | Tire lateral stiffness is a graph of tire load that has linear behavior near zero load and flattens at large loads. mLatStiffY describes the maximum possible value of lateralStiffness/restLoad that occurs when (load/restLoad)>= mLatStiffX. More...
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| PxReal | mLongitudinalStiffnessPerUnitGravity |
| | Tire Longitudinal stiffness per unit gravitational acceleration. More...
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| PxReal | mCamberStiffnessPerUnitGravity |
| | tire Tire camber stiffness per unity gravitational acceleration. More...
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| PxReal | mFrictionVsSlipGraph [3][2] |
| | Graph of friction vs longitudinal slip with 3 points. More...
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| PxU32 | mType |
| | Tire type denoting slicks, wets, snow, winter, summer, all-terrain, mud etc. More...
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◆ PxVehicleTireData()
| PxVehicleTireData::PxVehicleTireData |
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inline |
◆ getFrictionVsSlipGraphRecipx1Minusx0()
| PX_FORCE_INLINE PxReal PxVehicleTireData::getFrictionVsSlipGraphRecipx1Minusx0 |
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const |
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inline |
◆ getFrictionVsSlipGraphRecipx2Minusx1()
| PX_FORCE_INLINE PxReal PxVehicleTireData::getFrictionVsSlipGraphRecipx2Minusx1 |
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const |
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inline |
◆ getRecipLongitudinalStiffnessPerUnitGravity()
| PX_FORCE_INLINE PxReal PxVehicleTireData::getRecipLongitudinalStiffnessPerUnitGravity |
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const |
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inline |
◆ isValid()
| bool PxVehicleTireData::isValid |
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const |
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private |
◆ PxVehicleWheels4SimData
| friend class PxVehicleWheels4SimData |
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friend |
◆ mCamberStiffnessPerUnitGravity
| PxReal PxVehicleTireData::mCamberStiffnessPerUnitGravity |
tire Tire camber stiffness per unity gravitational acceleration.
- Note
- Camber stiffness of the tire is calculated as gravitationalAcceleration*mCamberStiffnessPerUnitGravity
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Camber force can be approximated as gravitationalAcceleration*mCamberStiffnessPerUnitGravity*camberAngle.
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Specified in kilograms per radian.
Range: [0, PX_MAX_F32)
◆ mFrictionVsSlipGraph
| PxReal PxVehicleTireData::mFrictionVsSlipGraph[3][2] |
Graph of friction vs longitudinal slip with 3 points.
- Note
- mFrictionVsSlipGraph[0][0] is always zero.
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mFrictionVsSlipGraph[0][1] is the friction available at zero longitudinal slip.
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mFrictionVsSlipGraph[1][0] is the value of longitudinal slip with maximum friction.
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mFrictionVsSlipGraph[1][1] is the maximum friction.
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mFrictionVsSlipGraph[2][0] is the end point of the graph.
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mFrictionVsSlipGraph[2][1] is the value of friction for slips greater than mFrictionVsSlipGraph[2][0].
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The friction value computed from the friction vs longitudinal slip graph is used to scale the friction value for the combination of material and tire type (PxVehicleDrivableSurfaceToTireFrictionPairs).
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mFrictionVsSlipGraph[2][0] > mFrictionVsSlipGraph[1][0] > mFrictionVsSlipGraph[0][0]
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mFrictionVsSlipGraph[1][1] is typically greater than mFrictionVsSlipGraph[0][1]
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mFrictionVsSlipGraph[2][1] is typically smaller than mFrictionVsSlipGraph[1][1]
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longitudinal slips > mFrictionVsSlipGraph[2][0] use friction multiplier mFrictionVsSlipGraph[2][1]
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The final friction value used by the tire model is the value returned by PxVehicleDrivableSurfaceToTireFrictionPairs multiplied by the value computed from mFrictionVsSlipGraph.
- See also
- PxVehicleDrivableSurfaceToTireFrictionPairs, PxVehicleComputeTireForce
Range: [0, PX_MAX_F32)
◆ mFrictionVsSlipGraphRecipx1Minusx0
| PxReal PxVehicleTireData::mFrictionVsSlipGraphRecipx1Minusx0 |
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private |
◆ mFrictionVsSlipGraphRecipx2Minusx1
| PxReal PxVehicleTireData::mFrictionVsSlipGraphRecipx2Minusx1 |
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private |
◆ mLatStiffX
| PxReal PxVehicleTireData::mLatStiffX |
Tire lateral stiffness is a graph of tire load that has linear behavior near zero load and flattens at large loads. mLatStiffX describes the minimum normalized load (load/restLoad) that gives a flat lateral stiffness response to load.
Range: [0, PX_MAX_F32)
◆ mLatStiffY
| PxReal PxVehicleTireData::mLatStiffY |
Tire lateral stiffness is a graph of tire load that has linear behavior near zero load and flattens at large loads. mLatStiffY describes the maximum possible value of lateralStiffness/restLoad that occurs when (load/restLoad)>= mLatStiffX.
- Note
- If load/restLoad is greater than mLatStiffX then the lateral stiffness is mLatStiffY*restLoad.
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If load/restLoad is less than mLatStiffX then the lateral stiffness is mLastStiffY*(load/mLatStiffX)
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Lateral force can be approximated as lateralStiffness * lateralSlip.
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Specified in per radian.
Range: [0, PX_MAX_F32)
◆ mLongitudinalStiffnessPerUnitGravity
| PxReal PxVehicleTireData::mLongitudinalStiffnessPerUnitGravity |
Tire Longitudinal stiffness per unit gravitational acceleration.
- Note
- Longitudinal stiffness of the tire is calculated as gravitationalAcceleration*mLongitudinalStiffnessPerUnitGravity.
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Longitudinal force can be approximated as gravitationalAcceleration*mLongitudinalStiffnessPerUnitGravity*longitudinalSlip.
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Specified in kilograms per radian.
Range: [0, PX_MAX_F32)
◆ mPad
| PxReal PxVehicleTireData::mPad[2] |
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private |
◆ mRecipLongitudinalStiffnessPerUnitGravity
| PxReal PxVehicleTireData::mRecipLongitudinalStiffnessPerUnitGravity |
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private |
◆ mType
| PxU32 PxVehicleTireData::mType |
The documentation for this class was generated from the following file:
