Description

Domain for FEA large deformations (nonlinear finite strain theory).

It is based on a vector field, ChFieldDisplacement3D, that is used to store x, the absolute spatial position of nodes (NOT the displacement from the material reference position, d=x-X, as in some software). Material properties are defined via a material from the ChMaterial3DStress subclasses (the simplest of these materials is the ChMaterial3DStressStVenant, that corresponds to conventional linear elasticity for small strains). Not copyable: don't do __declspec(dllexport), ie. "class ChApi ChDomainDeformation...", just keep all in .h

#include <ChDomainDeformation.h>

Inheritance diagram for chrono::fea::ChDomainDeformation:

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Collaboration diagram for chrono::fea::ChDomainDeformation:

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Classes
class	ExtractDeformationGradientF
	Extract the unsymmetric F deformation gradient tensor. More...

class	ExtractEulerAlmansiStrain
	Extract the e=1/2(I- (F*F^T)^-1) Euler-Almansi strain tensor (should be plotted on spatial deformed configuration) More...

class	ExtractGreenLagrangeStrain
	Extract the E=1/2(F^T*F - I) Green-Lagrange strain tensor (should be plotted on material undeformed configuration) More...

class	ExtractLeftCauchyGreenB
	Extract the B=F*F^T left Cauchy-Green deformation tensor (should be plotted on spatial deformed configuration) More...

class	ExtractRightCauchyGreenC
	Extract the C=F^T*F right Cauchy-Green deformation tensor (should be plotted on material undeformed configuration) More...

class	ExtractStress2ndPiolaKirchhoff
	Extract the stress, as 2nd Piola-Kirchhoff tensor (should be plotted on material undeformed configuration) More...

class	ExtractStressCauchy
	Extract the stress, as Cauchy true stress tensor (should be plotted on spatial deformed configuration) More...

Public Types
using	Base = ChDomainIntegrating< std::tuple< ChFieldDisplacement3D >, ChFieldDataAuxiliaryDeformation, ChElementDataKRM >

using	DataPerElement = typename Base::DataPerElement

Public Types inherited from chrono::fea::ChDomainIntegrating< std::tuple< ChFieldDisplacement3D >, ChFieldDataAuxiliaryDeformation, ChElementDataKRM >
using	DataPerElement = typename ChDomainImpl< std::tuple< ChFieldDisplacement3D >, ChFieldDataAuxiliaryDeformation, ChElementDataKRM >::DataPerElement

Public Member Functions
	ChDomainDeformation (std::shared_ptr< ChFieldDisplacement3D > melasticfield)
	Construct the domain.

virtual void	PointComputeInternalLoads (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, const int i_point, ChVector3d &eta, const double s, ChVectorDynamic<> &Fi) override
	Computes the internal loads Fi for one quadrature point, except quadrature weighting, and ADD the s-scaled result to Fi vector.

virtual void	PointComputeKRMmatrices (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, const int i_point, ChVector3d &eta, ChMatrixRef H, double Kpfactor, double Rpfactor=0, double Mpfactor=0) override
	Sets matrix H = MfactorM + RfactordFi/dv + KfactordFi/dx, as scaled sum of the tangent matrices M,R,K,: H = MfactorM + RfactorR + KfactorK. More...

virtual void	PointUpdateEndStep (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, const int i_point, const double time) override
	Invoked at the end of each time step. More...

virtual void	IntLoadResidual_F (const unsigned int off, ChVectorDynamic<> &R, const double c) override
	Usually not necessary to override ChPhysicsItem because the parent ChDomainImpl does all needed. More...

void	LoadAutomaticGravity (ChVectorDynamic<> &R, const double c)
	Utility function that adds gravity force per each element. More...

void	SetAutomaticGravity (bool mg, const ChVector3d G_acc=ChVector3d(0, -9.81, 0), int num_points=1)
	If true, as by default, this mesh will add automatically a gravity load to all contained elements (that support gravity) using the G value from the ChSystem. More...

bool	GetAutomaticGravity ()
	Tell if this mesh will add automatically a gravity load to all contained elements.

Public Member Functions inherited from chrono::fea::ChDomainIntegrating< std::tuple< ChFieldDisplacement3D >, ChFieldDataAuxiliaryDeformation, ChElementDataKRM >
	ChDomainIntegrating (typename tuple_as_sharedptr< std::tuple< ChFieldDisplacement3D > >::type mfields)
	Construct a domain, given a tuple of fields.

virtual void	ElementComputeInternalLoads (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, ChVectorDynamic<> &Fi)
	For a given finite element, computes the internal loads Fi and set values in the Fi vector. More...

virtual void	ElementComputeKRMmatrices (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, ChMatrixRef H, double Kfactor, double Rfactor=0, double Mfactor=0)
	For a given finite element, computes matrix H = MfactorM + RfactordFi/dv + KfactordFi/dx, as scaled sum of the tangent matrices M,R,K,: H = MfactorM + RfactorR + KfactorK. More...

virtual void	PointComputeInternalLoads (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, const int i_point, ChVector3d &eta, const double s, ChVectorDynamic<> &Fi)=0
	Computes the internal loads Fi for one quadrature point, except quadrature weighting, and ADD the s-scaled result to Fi vector. More...

virtual void	PointComputeKRMmatrices (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, const int i_point, ChVector3d &eta, ChMatrixRef H, double Kpfactor, double Rpfactor=0, double Mpfactor=0)=0
	Computes tangent matrix H for one quadrature point, except quadrature weighting, and ADD the scaled result to H matrix. More...

Public Member Functions inherited from chrono::fea::ChDomainImpl< std::tuple< ChFieldDisplacement3D >, ChFieldDataAuxiliaryDeformation, ChElementDataKRM >
	ChDomainImpl (typename tuple_as_sharedptr< std::tuple< ChFieldDisplacement3D > >::type mfields)
	Construct a domain, given a tuple of fields.

DataPerElement &	ElementData (std::shared_ptr< ChFieldElement > melement)
	Access the DataPerElement associated to the element. More...

virtual void	AddElement (std::shared_ptr< ChFieldElement > melement) override
	Adds a finite element to this domain. More...

virtual void	RemoveElement (std::shared_ptr< ChFieldElement > melement) override
	Removes a finite element from this domain.

virtual bool	IsElementAdded (std::shared_ptr< ChFieldElement > melement) override
	Returns true if the element is already in the domain.

virtual bool	InitialDataSetup () override
	This rewires all pointers and correctly set up the element_datamap.

virtual int	GetNumPerNodeCoordsPosLevel () override
	Get the total coordinates per each node (summing the dofs per each field)

virtual int	GetNumPerNodeCoordsVelLevel () override
	Get the total coordinates per each node (summing the dofs per each field)

virtual int	GetNumNodes () override
	Get the total number of nodes affected by this domain (some could be shared with other domains)

virtual int	GetNumFields () override
	Get the number of fields used by this domain.

virtual std::shared_ptr< ChFieldBase >	GetField (int nfield) override
	Get the n-th field.

std::unique_ptr< ChDomain::IteratorOnElements >	CreateIteratorOnElements () override

virtual void	GetFieldStateBlock (std::shared_ptr< ChFieldElement > melement, ChVectorDynamic<> &S, unsigned int i_field) override
	Fills the S vector with the current i-th field states S_j at the nodes of the element. More...

virtual void	GetFieldStateBlockDt (std::shared_ptr< ChFieldElement > melement, ChVectorDynamic<> &dSdt, unsigned int i_field) override
	Fills the dSdt vector with the current i-th field states dS_j/dt at the nodes of the element. More...

virtual void	GetFieldPackedStateBlock (std::shared_ptr< ChFieldElement > melement, DataPerElement &elementdata, ChMatrixDynamic<> &S_hh, unsigned int i_field)
	Fills the S_hh matrix with the "packed" i-th field states S_j at the nodes of the element. More...

virtual void	GetFieldPackedStateBlockDt (std::shared_ptr< ChFieldElement > melement, DataPerElement &elementdata, ChMatrixDynamic<> &dSdt_hh, unsigned int i_field)
	Fills the dSdt_hh matrix with the "packed" i-th field states dSdt_j at the nodes of the element. More...

virtual void	ElementComputeInternalLoads (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, ChVectorDynamic<> &Fi)=0
	For a given finite element, computes the internal loads Fi and set values in the Fi vector. More...

virtual void	ElementComputeKRMmatrices (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, ChMatrixRef H, double Kfactor, double Rfactor=0, double Mfactor=0)=0
	For a given finite element, computes matrix H = MfactorM + RfactordFi/dv + KfactordFi/dx, as scaled sum of the tangent matrices M,R,K,: H = MfactorM + RfactorR + KfactorK. More...

virtual void	ElementIntLoadLumpedMass_Md (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, ChVectorDynamic<> &Md_i, double &error)
	For a given finite element, computes the lumped mass matrix. More...

virtual void	ElementUpdateEndStep (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, double time)
	For a given finite element, computes updates at the end of a time step. More...

virtual void	PointUpdateEndStep (std::shared_ptr< ChFieldElement > melement, DataPerElement &data, const int i_point, const double time)
	Compute updates (ex. More...

virtual void	Setup () override
	Perform setup operations. More...

virtual void	SetupInitial () override

virtual void	Update (double time, UpdateFlags update_flags) override
	Perform any updates necessary at the current phase during the solution process. More...

virtual void	ForceToRest () override
	Set zero speed (and zero accelerations) in state without changing the position.

virtual unsigned int	GetNumCoordsPosLevel () override
	Get the number of coordinates at the position level. More...

virtual unsigned int	GetNumCoordsVelLevel () override
	Get the number of coordinates at the velocity level. More...

virtual void	IntStateGather (const unsigned int off_x, ChState &x, const unsigned int off_v, ChStateDelta &v, double &T) override
	From item's state to global state vectors y={x,v} pasting the states at the specified offsets. More...

virtual void	IntStateScatter (const unsigned int off_x, const ChState &x, const unsigned int off_v, const ChStateDelta &v, const double T, UpdateFlags update_flags) override
	From global state vectors y={x,v} to element states (if any) (and update) fetching the states at the specified offsets. More...

virtual void	IntStateGatherAcceleration (const unsigned int off_a, ChStateDelta &a) override
	From element states (if any) acceleration to global acceleration vector. More...

virtual void	IntStateScatterAcceleration (const unsigned int off_a, const ChStateDelta &a) override
	From global acceleration vector to element states (if any) acceleration. More...

virtual void	IntStateIncrement (const unsigned int off_x, ChState &x_new, const ChState &x, const unsigned int off_v, const ChStateDelta &Dv) override
	Computes x_new = x + Dt , using vectors at specified offsets. More...

virtual void	IntStateOnEndStep (double T) override
	Called at the end of a step, after the state has been updated. More...

virtual void	IntStateGetIncrement (const unsigned int off_x, const ChState &x_new, const ChState &x, const unsigned int off_v, ChStateDelta &Dv) override
	Computes Dt = x_new - x, using vectors at specified offsets. More...

virtual void	IntLoadResidual_Mv (const unsigned int off, ChVectorDynamic<> &R, const ChVectorDynamic<> &w, const double c) override
	Takes the Mw term, multiplying mass by a vector, scale and adds to R at given offset: R += cM*w. More...

virtual void	IntLoadLumpedMass_Md (const unsigned int off, ChVectorDynamic<> &Md, double &err, const double c) override
	Adds the lumped mass to a Md vector, representing a mass diagonal matrix. More...

virtual void	IntToDescriptor (const unsigned int off_v, const ChStateDelta &v, const ChVectorDynamic<> &R, const unsigned int off_L, const ChVectorDynamic<> &L, const ChVectorDynamic<> &Qc) override
	Prepare variables and constraints to accommodate a solution: More...

virtual void	IntFromDescriptor (const unsigned int off_v, ChStateDelta &v, const unsigned int off_L, ChVectorDynamic<> &L) override
	After a solver solution, fetch values from variables and constraints into vectors: More...

virtual void	InjectVariables (ChSystemDescriptor &descriptor) override
	Register with the given system descriptor any ChVariable objects associated with this item.

virtual void	LoadKRMMatrices (double Kfactor, double Rfactor, double Mfactor) override
	Compute and load current stiffnes (K), damping (R), and mass (M) matrices in encapsulated ChKRMBlock objects. More...

virtual void	InjectKRMMatrices (ChSystemDescriptor &descriptor) override
	Register with the given system descriptor any ChKRMBlock objects associated with this item.

Public Member Functions inherited from chrono::ChPhysicsItem
	ChPhysicsItem (const ChPhysicsItem &other)

virtual ChPhysicsItem *	Clone () const override
	"Virtual" copy constructor (covariant return type).

ChSystem *	GetSystem () const
	Get the pointer to the parent ChSystem().

virtual void	SetSystem (ChSystem *m_system)
	Set the pointer to the parent ChSystem(). More...

virtual bool	IsActive () const
	Return true if the object is active and included in dynamics.

virtual bool	IsCollisionEnabled () const
	Tell if the object is subject to collision. More...

virtual void	AddCollisionModelsToSystem (ChCollisionSystem *coll_sys) const
	Add to the provided collision system any collision models managed by this physics item. More...

virtual void	RemoveCollisionModelsFromSystem (ChCollisionSystem *coll_sys) const
	Remove from the provided collision system any collision models managed by this physics item. More...

virtual void	SyncCollisionModels ()
	Synchronize the position and bounding box of any collision models managed by this physics item.

virtual ChAABB	GetTotalAABB () const
	Get the axis-aligned bounding box (AABB) of this object. More...

virtual ChVector3d	GetCenter () const
	Get a symbolic 'center' of the object. More...

virtual unsigned int	GetNumConstraints ()
	Get the number of scalar constraints.

virtual unsigned int	GetNumConstraintsBilateral ()
	Get the number of bilateral scalar constraints.

virtual unsigned int	GetNumConstraintsUnilateral ()
	Get the number of unilateral scalar constraints.

unsigned int	GetOffset_x ()
	Get offset in the state vector (position part)

unsigned int	GetOffset_w ()
	Get offset in the state vector (speed part)

unsigned int	GetOffset_L ()
	Get offset in the Lagrange multipliers.

void	SetOffset_x (const unsigned int moff)
	Set offset in the state vector (position part) Note: only the ChSystem::Setup function should use this.

void	SetOffset_w (const unsigned int moff)
	Set offset in the state vector (speed part) Note: only the ChSystem::Setup function should use this.

void	SetOffset_L (const unsigned int moff)
	Set offset in the Lagrange multipliers Note: only the ChSystem::Setup function should use this.

virtual void	IntStateGatherReactions (const unsigned int off_L, ChVectorDynamic<> &L)
	From item's reaction forces to global reaction vector. More...

virtual void	IntStateScatterReactions (const unsigned int off_L, const ChVectorDynamic<> &L)
	From global reaction vector to item's reaction forces. More...

virtual void	IntLoadResidual_CqL (const unsigned int off_L, ChVectorDynamic<> &R, const ChVectorDynamic<> &L, const double c)
	Takes the term Cq'L, scale and adds to R at given offset: R += cCq'*L. More...

virtual void	IntLoadConstraint_C (const unsigned int off, ChVectorDynamic<> &Qc, const double c, const double c_vel, bool do_clamp, double recovery_clamp)
	Takes the term C, scale and adds to Qc at given offset: Qc += c*C. More...

virtual void	IntLoadConstraint_Ct (const unsigned int off, ChVectorDynamic<> &Qc, const double c, const double c_vel)
	Takes the term Ct, scale and adds to Qc at given offset: Qc += c*Ct. More...

virtual void	InjectConstraints (ChSystemDescriptor &descriptor)
	Register with the given system descriptor any ChConstraint objects associated with this item.

virtual void	LoadConstraintJacobians ()
	Compute and load current Jacobians in encapsulated ChConstraint objects.

virtual void	VariablesFbReset ()
	Sets the 'fb' part (the known term) of the encapsulated ChVariables to zero.

virtual void	VariablesFbLoadForces (double factor=1)
	Adds the current forces (applied to item) into the encapsulated ChVariables, in the 'fb' part: qf+=forces*factor.

virtual void	VariablesQbLoadSpeed ()
	Initialize the 'qb' part of the ChVariables with the current value of speeds. More...

virtual void	VariablesFbIncrementMq ()
	Adds M*q (masses multiplied current 'qb') to Fb, ex. More...

virtual void	VariablesQbSetSpeed (double step=0)
	Fetches the item speed (ex. More...

virtual void	VariablesQbIncrementPosition (double step)
	Increment item positions by the 'qb' part of the ChVariables, multiplied by a 'step' factor. More...

virtual void	ConstraintsBiReset ()
	Sets to zero the known term (b_i) of encapsulated ChConstraints.

virtual void	ConstraintsBiLoad_C (double factor=1, double recovery_clamp=0.1, bool do_clamp=false)
	Adds the current C (constraint violation) to the known term (b_i) of encapsulated ChConstraints.

virtual void	ConstraintsBiLoad_Ct (double factor=1)
	Adds the current Ct (partial t-derivative, as in C_dt=0-> [Cq]*q_dt=-Ct) to the known term (b_i) of encapsulated ChConstraints.

virtual void	ConstraintsBiLoad_Qc (double factor=1)
	Adds the current Qc (the vector of C_dtdt=0 -> [Cq]*q_dtdt=Qc ) to the known term (b_i) of encapsulated ChConstraints.

virtual void	ConstraintsFbLoadForces (double factor=1)
	Adds the current link-forces, if any, (caused by springs, etc.) to the 'fb' vectors of the ChVariables referenced by encapsulated ChConstraints.

virtual void	ConstraintsFetch_react (double factor=1)
	Fetches the reactions from the lagrangian multiplier (l_i) of encapsulated ChConstraints. More...

virtual void	ArchiveOut (ChArchiveOut &archive_out) override
	Method to allow serialization of transient data to archives.

virtual void	ArchiveIn (ChArchiveIn &archive_in) override
	Method to allow deserialization of transient data from archives. More...

Public Member Functions inherited from chrono::ChObj
	ChObj (const ChObj &other)

int	GetIdentifier () const
	Get the unique integer identifier of this object. More...

void	SetTag (int tag)
	Set an object integer tag (default: -1). More...

int	GetTag () const
	Get the tag of this object.

void	SetName (const std::string &myname)
	Set the name of this object.

const std::string &	GetName () const
	Get the name of this object.

double	GetChTime () const
	Gets the simulation time of this object.

void	SetChTime (double m_time)
	Sets the simulation time of this object.

void	AddVisualModel (std::shared_ptr< ChVisualModel > model)
	Add an (optional) visualization model. More...

std::shared_ptr< ChVisualModel >	GetVisualModel () const
	Access the visualization model (if any). More...

void	AddVisualShape (std::shared_ptr< ChVisualShape > shape, const ChFrame<> &frame=ChFrame<>())
	Add the specified visual shape to the visualization model. More...

std::shared_ptr< ChVisualShape >	GetVisualShape (unsigned int i) const
	Access the specified visualization shape in the visualization model (if any). More...

void	AddVisualShapeFEA (std::shared_ptr< ChVisualShapeFEA > shapeFEA)
	Add the specified FEA visualization object to the visualization model. More...

std::shared_ptr< ChVisualShapeFEA >	GetVisualShapeFEA (unsigned int i) const
	Access the specified FEA visualization object in the visualization model (if any). More...

virtual ChFrame	GetVisualModelFrame (unsigned int nclone=0) const
	Get the reference frame (expressed in and relative to the absolute frame) of the visual model. More...

virtual unsigned int	GetNumVisualModelClones () const
	Return the number of clones of the visual model associated with this object. More...

void	AddCamera (std::shared_ptr< ChCamera > camera)
	Attach a camera to this object. More...

std::vector< std::shared_ptr< ChCamera > >	GetCameras () const
	Get the set of cameras attached to this object.

void	UpdateVisualModel ()
	Utility function to update only the associated visual assets (if any).

virtual std::string &	ArchiveContainerName ()

Static Public Member Functions
static void	ComputeB (ChMatrixRef B, ChMatrixConstRef dNdX, ChMatrixConstRef F)
	Utility: Compute B as in dE = B dx where dE is variation in Green Lagrange strain (Voigt notation) and dx is the variation in spatial node coordinates (also works as dE = B du with du variation in displacements)

Public Attributes
std::shared_ptr< ChMaterial3DStress >	material
	Elastic properties of this domain.

Protected Member Functions
virtual std::shared_ptr< ChMaterial >	GetMaterial () override
	Get the material of the domain.

Protected Member Functions inherited from chrono::ChObj
int	GenerateUniqueIdentifier ()

Protected Attributes
bool	automatic_gravity_load

int	num_points_gravity

ChVector3d	gravity_G_acceleration

Protected Attributes inherited from chrono::fea::ChDomainImpl< std::tuple< ChFieldDisplacement3D >, ChFieldDataAuxiliaryDeformation, ChElementDataKRM >
std::unordered_map< std::shared_ptr< ChFieldElement >, DataPerElement >	element_datamap

std::array< std::shared_ptr< ChFieldBase >, std::tuple_size_v< std::tuple< ChFieldDisplacement3D > > >	fields

Protected Attributes inherited from chrono::fea::ChDomain
unsigned int	n_dofs
	total degrees of freedom of element materialpoint states (ex plasticity)

unsigned int	n_dofs_w
	total degrees of freedom of element materialpoint states (ex plasticity), derivative (Lie algebra)

Protected Attributes inherited from chrono::ChPhysicsItem
ChSystem *	system
	parent system

unsigned int	offset_x
	offset in vector of state (position part)

unsigned int	offset_w
	offset in vector of state (speed part)

unsigned int	offset_L
	offset in vector of Lagrange multipliers

Protected Attributes inherited from chrono::ChObj
double	ChTime
	object simulation time

std::string	m_name
	object name

int	m_identifier
	object unique identifier

int	m_tag
	user-supplied tag

std::shared_ptr< ChVisualModelInstance >	vis_model_instance
	instantiated visualization model

std::vector< std::shared_ptr< ChCamera > >	cameras
	set of cameras

Member Function Documentation

◆ IntLoadResidual_F()

virtual void chrono::fea::ChDomainDeformation::IntLoadResidual_F	(	const unsigned int	off,
		ChVectorDynamic<> &	R,
		const double	c
	)

inlineoverridevirtual

Usually not necessary to override ChPhysicsItem because the parent ChDomainImpl does all needed.

However, HERE WE OVERLOAD THE PARENT IMPLEMENTATION BECAUSE WE MAY ADD AUTOMATIC GRAVITY PER EACH ELEMENT. Takes the F force term, scale and adds to R at given offset:

Parameters

off	offset in R residual
R	result: the R residual, R += c*F
c	a scaling factor

Reimplemented from chrono::fea::ChDomainImpl< std::tuple< ChFieldDisplacement3D >, ChFieldDataAuxiliaryDeformation, ChElementDataKRM >.

◆ LoadAutomaticGravity()

void chrono::fea::ChDomainDeformation::LoadAutomaticGravity	(	ChVectorDynamic<> &	R,
		const double	c
	)

inline

Utility function that adds gravity force per each element.

This function can called from the IntLoadResidual_F() function.

Parameters

R	result: the R residual, R += c*F
c	a scaling factor

◆ PointComputeKRMmatrices()

virtual void chrono::fea::ChDomainDeformation::PointComputeKRMmatrices	(	std::shared_ptr< ChFieldElement >	melement,
		DataPerElement &	data,
		const int	i_point,
		ChVector3d &	eta,
		ChMatrixRef	H,
		double	Kpfactor,
		double	Rpfactor = `0`,
		double	Mpfactor = `0`
	)

inlineoverridevirtual

Sets matrix H = Mfactor*M + Rfactor*dFi/dv + Kfactor*dFi/dx, as scaled sum of the tangent matrices M,R,K,: H = Mfactor*M + Rfactor*R + Kfactor*K.

Setting Mfactor=1 and Rfactor=Kfactor=0, it can be used to get just mass matrix, etc.

◆ PointUpdateEndStep()

virtual void chrono::fea::ChDomainDeformation::PointUpdateEndStep	(	std::shared_ptr< ChFieldElement >	melement,
		DataPerElement &	data,
		const int	i_point,
		const double	time
	)

inlineoverridevirtual

Invoked at the end of each time step.

If the material has some custom handling of auxiliary data (states etc.) it will manage this in ComputeUpdateEndStep()

◆ SetAutomaticGravity()

void chrono::fea::ChDomainDeformation::SetAutomaticGravity	(	bool	mg,
		const ChVector3d	G_acc = `ChVector3d(0, -9.81, 0)`,
		int	num_points = `1`
	)

inline

If true, as by default, this mesh will add automatically a gravity load to all contained elements (that support gravity) using the G value from the ChSystem.

So this saves you from adding many ChLoad<fea::ChLoaderGravity> to all elements.

The documentation for this class was generated from the following file:

/builds/uwsbel/chrono/src/chrono/fea/ChDomainDeformation.h

Description

Classes

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Member Function Documentation

◆ IntLoadResidual_F()

◆ LoadAutomaticGravity()

◆ PointComputeKRMmatrices()

◆ PointUpdateEndStep()

◆ SetAutomaticGravity()