Description

Base class for a sprocket template with gear profile composed of circular arcs and a flat seat.

This sprocket type is suitable for interaction with double-pin track shoes.

#include <ChSprocketDoublePin.h>

Inheritance diagram for chrono::vehicle::ChSprocketDoublePin:
Collaboration diagram for chrono::vehicle::ChSprocketDoublePin:

Public Member Functions

 ChSprocketDoublePin (const std::string &name)
 
virtual std::shared_ptr< geometry::ChLinePathGetProfile () override
 Return the 2D gear profile. More...
 
virtual ChSystem::CustomCollisionCallbackGetCollisionCallback (ChTrackAssembly *track) override
 Return the custom collision callback object. More...
 
- Public Member Functions inherited from chrono::vehicle::ChSprocket
 ChSprocket (const std::string &name)
 
virtual int GetNumTeeth () const =0
 Get the number of teeth of the gear.
 
virtual double GetAssemblyRadius () const =0
 Get the track assembly radius. More...
 
std::shared_ptr< ChBodyGetGearBody () const
 Get a handle to the gear body.
 
std::shared_ptr< ChShaftGetAxle () const
 Get a handle to the axle shaft.
 
std::shared_ptr< ChLinkLockRevoluteGetRevolute () const
 Get a handle to the revolute joint.
 
double GetAxleSpeed () const
 Get the angular speed of the axle.
 
void SetCollide (bool val)
 Turn on/off collision flag for the gear wheel.
 
virtual double GetMass () const
 Get the mass of the sprocket subsystem.
 
void Initialize (std::shared_ptr< ChBodyAuxRef > chassis, const ChVector<> &location, ChTrackAssembly *track)
 Initialize this sprocket subsystem. More...
 
void ApplyAxleTorque (double torque)
 Apply the provided motor torque. More...
 
virtual void AddVisualizationAssets (VisualizationType vis) override
 Add visualization assets for the sprocket subsystem.
 
virtual void RemoveVisualizationAssets () overridefinal
 Remove visualization assets for the sprocket subsystem.
 
void LogConstraintViolations ()
 Log current constraint violations.
 
- Public Member Functions inherited from chrono::vehicle::ChPart
 ChPart (const std::string &name)
 Construct a vehicle subsystem with the specified name. More...
 
const std::string & GetName () const
 Get the name identifier for this subsystem.
 
void SetName (const std::string &name)
 Set the name identifier for this subsystem.
 
void SetVisualizationType (VisualizationType vis)
 Set the visualization mode for this subsystem.
 
void SetContactFrictionCoefficient (float friction_coefficient)
 Set coefficient of friction. More...
 
void SetContactRestitutionCoefficient (float restitution_coefficient)
 Set coefficient of restitution. More...
 
void SetContactMaterialProperties (float young_modulus, float poisson_ratio)
 Set contact material properties. More...
 
void SetContactMaterialCoefficients (float kn, float gn, float kt, float gt)
 Set contact material coefficients. More...
 
float GetCoefficientFriction () const
 Get coefficient of friction for contact material.
 
float GetCoefficientRestitution () const
 Get coefficient of restitution for contact material.
 
float GetYoungModulus () const
 Get Young's modulus of elasticity for contact material.
 
float GetPoissonRatio () const
 Get Poisson ratio for contact material.
 
float GetKn () const
 Get normal stiffness coefficient for contact material.
 
float GetKt () const
 Get tangential stiffness coefficient for contact material.
 
float GetGn () const
 Get normal viscous damping coefficient for contact material.
 
float GetGt () const
 Get tangential viscous damping coefficient for contact material.
 

Protected Member Functions

virtual double GetOuterRadius () const =0
 Return the radius of the addendum circle.
 
virtual double GetArcRadius () const =0
 Return the radius of the (concave) tooth circular arcs.
 
virtual double GetArcCenterHeight () const =0
 Return height of arc centers.
 
virtual double GetArcCenterOffset () const =0
 Return offset of arc centers.
 
- Protected Member Functions inherited from chrono::vehicle::ChSprocket
virtual double GetGearMass () const =0
 Return the mass of the gear body.
 
virtual const ChVectorGetGearInertia ()=0
 Return the moments of inertia of the gear body.
 
virtual double GetAxleInertia () const =0
 Return the inertia of the axle shaft.
 
virtual double GetSeparation () const =0
 Return the distance between the two gear profiles.
 

Additional Inherited Members

- Static Public Member Functions inherited from chrono::vehicle::ChPart
static ChMatrix33 TransformInertiaMatrix (const ChVector<> &moments, const ChVector<> &products, const ChMatrix33<> &vehicle_rot, const ChMatrix33<> &body_rot)
 Utility function for transforming inertia tensors between centroidal frames. More...
 
- Protected Attributes inherited from chrono::vehicle::ChSprocket
std::shared_ptr< ChBodym_gear
 handle to the sprocket gear body
 
std::shared_ptr< ChShaftm_axle
 handle to gear shafts
 
std::shared_ptr< ChShaftsBodym_axle_to_spindle
 handle to gear-shaft connector
 
std::shared_ptr< ChLinkLockRevolutem_revolute
 handle to sprocket revolute joint
 
ChSystem::CustomCollisionCallbackm_callback
 custom collision functor object
 
- Protected Attributes inherited from chrono::vehicle::ChPart
std::string m_name
 
float m_friction
 contact coefficient of friction
 
float m_restitution
 contact coefficient of restitution
 
float m_young_modulus
 contact material Young modulus
 
float m_poisson_ratio
 contact material Poisson ratio
 
float m_kn
 normal contact stiffness
 
float m_gn
 normal contact damping
 
float m_kt
 tangential contact stiffness
 
float m_gt
 tangential contact damping
 

Constructor & Destructor Documentation

chrono::vehicle::ChSprocketDoublePin::ChSprocketDoublePin ( const std::string &  name)
Parameters
[in]namename of the subsystem

Member Function Documentation

ChSystem::CustomCollisionCallback * chrono::vehicle::ChSprocketDoublePin::GetCollisionCallback ( ChTrackAssembly track)
overridevirtual

Return the custom collision callback object.

Parameters
[in]trackpointer to containing track assembly

Implements chrono::vehicle::ChSprocket.

std::shared_ptr< geometry::ChLinePath > chrono::vehicle::ChSprocketDoublePin::GetProfile ( )
overridevirtual

Return the 2D gear profile.

The gear profile, a ChLinePath geometric object, is made up of an arbitrary number of sub-paths of type ChLineArc or ChLineSegment sub-lines. These must be added in clockwise order, and the end of sub-path i must be coincident with beginning of sub-path i+1.

Implements chrono::vehicle::ChSprocket.