#include <TriangularFEMForceField.h>

Inheritance diagram for sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >:

Detailed Description

template<class DataTypes>
class sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >

corotational triangle from @InProceedings{NPF05, author = "Nesme, Matthieu and Payan, Yohan and Faure, Fran\c{c}ois", title = "Efficient, Physically Plausible Finite Elements", booktitle = "Eurographics (short papers)", month = "august", year = "2005", editor = "J. Dingliana and F. Ganovelli", keywords = "animation, physical model, elasticity, finite elements", url = "http://www-evasion.imag.fr/Publications/2005/NPF05" }

Classes
class	TriangleInformation
	Class to store FEM information on each triangle, for topology modification handling. More...

class	VertexInformation
	Class to store FEM information on each vertex, for topology modification handling. More...

Public Attributes
core::topology::TriangleData< sofa::type::vector< TriangleInformation > >	d_triangleInfo
	Topology Data. More...

core::topology::PointData< sofa::type::vector< VertexInformation > >	d_vertexInfo
	Internal point data. More...

int	method
	Forcefield intern parameters. More...

Data< std::string >	d_method
	large: large displacements, small: small displacements More...

Data< sofa::type::vector< type::fixed_array< Coord, 3 > > >	d_rotatedInitialElements
	Initial strain parameters (if FEM is initialised with predefine values) More...

Data< sofa::type::vector< Transformation > >	d_initialTransformation
	Flag activating rendering of stress directions within each triangle. More...

Data< Real >	d_hosfordExponant
	Fracture parameters. More...

Data< Real >	d_criteriaValue
	Fracturable threshold used to draw fracturable triangles. More...

Data< bool >	d_showStressValue
	Display parameters. More...

Data< bool >	d_showStressVector
	Flag activating rendering of stress directions within each triangle. More...

Data< bool >	d_showFracturableTriangles
	Flag activating rendering of triangles to fracture. More...

Data< bool >	d_computePrincipalStress
	Compute principal stress for each triangle. More...

Public Attributes inherited from sofa::component::solidmechanics::fem::elastic::BaseLinearElasticityFEMForceField< DataTypes >
Data< VecReal >	d_poissonRatio
	FEM Poisson Ratio in Hooke's law [0,0.5[. More...

Data< VecReal >	d_youngModulus
	FEM Young's Modulus in Hooke's law. More...

SingleLink< BaseLinearElasticityFEMForceField< DataTypes >, sofa::core::topology::BaseMeshTopology, BaseLink::FLAG_STOREPATH\|BaseLink::FLAG_STRONGLINK >	l_topology
	Link to be set to the topology container in the component graph. More...

Public Attributes inherited from sofa::core::behavior::BaseForceField
Data< SReal >	rayleighStiffness
	Rayleigh Damping stiffness matrix coefficient. More...

objectmodel::lifecycle::RemovedData	isCompliance
	Considered as compliance, else considered as stiffness (default to false) More...

Public Attributes inherited from sofa::core::objectmodel::BaseObject
Data< bool >	f_listening
	if true, handle the events, otherwise ignore the events More...

Public Attributes inherited from sofa::core::objectmodel::Base
std::vector< lifecycle::DeprecatedData * >	m_oldAttributes

Data< int >	d_messageLogCount

Data< std::string >	name
	Name of the object. More...

Data< bool >	f_printLog
	if true, emits extra messages at runtime. More...

Data< sofa::core::objectmodel::TagSet >	f_tags
	list of the subsets the object belongs to More...

Data< sofa::type::BoundingBox >	f_bbox
	this object bounding box More...

Data< sofa::core::objectmodel::ComponentState >	d_componentState
	The state of the component among (Dirty, Valid, Undefined, Loading, Invalid). More...

std::string	m_definitionSourceFileName {""}

int	m_definitionSourceFilePos {-1}

std::string	m_instanciationSourceFileName {""}

int	m_instanciationSourceFilePos {-1}

Protected Attributes
bool	_anisotropicMaterial

bool	updateMatrix

Protected Attributes inherited from sofa::core::behavior::StateAccessor
MultiLink< StateAccessor, BaseMechanicalState, BaseLink::FLAG_DUPLICATE >	l_mechanicalStates

Protected Attributes inherited from sofa::core::objectmodel::BaseObject
SingleLink< BaseObject, BaseContext, BaseLink::FLAG_DOUBLELINK >	l_context

LinkSlaves	l_slaves

SingleLink< BaseObject, BaseObject, BaseLink::FLAG_DOUBLELINK >	l_master

Protected Attributes inherited from sofa::core::objectmodel::Base
std::map< std::string, sofa::core::DataTrackerCallback >	m_internalEngine

VecData	m_vecData
	List of fields (Data instances) More...

MapData	m_aliasData
	name -> Data multi-map (includes names and aliases) More...

VecLink	m_vecLink
	List of links. More...

MapLink	m_aliasLink
	name -> Link multi-map (includes names and aliases) More...

Protected Attributes inherited from sofa::core::behavior::SingleStateAccessor< DataTypes >
SingleLink< SingleStateAccessor< DataTypes >, MechanicalState< DataTypes >, BaseLink::FLAG_STRONGLINK >	mstate

Public Member Functions
	SOFA_CLASS (SOFA_TEMPLATE(TriangularFEMForceField, DataTypes), SOFA_TEMPLATE(BaseLinearElasticityFEMForceField, DataTypes))

void	init () override
	Initialization method called at graph creation and modification, during top-down traversal. More...

void	reinit () override
	Update method called when variables used in precomputation are modified. More...

void	addForce (const core::MechanicalParams *mparams, DataVecDeriv &f, const DataVecCoord &x, const DataVecDeriv &v) override

void	addDForce (const core::MechanicalParams *mparams, DataVecDeriv &df, const DataVecDeriv &dx) override

void	buildDampingMatrix (core::behavior::DampingMatrix *) final

SReal	getPotentialEnergy (const core::MechanicalParams *mparams, const DataVecCoord &x) const override

void	computeElementStiffnessMatrix (type::Mat< 9, 9, Real > &S, type::Mat< 9, 9, Real > &SR, const MaterialStiffness &K, const StrainDisplacement &J, const Transformation &Rot)

void	addKToMatrix (sofa::linearalgebra::BaseMatrix *mat, SReal k, unsigned int &offset) override

void	buildStiffnessMatrix (core::behavior::StiffnessMatrix *matrix) override

void	draw (const core::visual::VisualParams *vparams) override
	Render internal data of this object, for debugging purposes. More...

void	createTriangleInformation (Index triangleIndex, TriangleInformation &, const core::topology::BaseMeshTopology::Triangle &t, const sofa::type::vector< Index > &, const sofa::type::vector< SReal > &)

int	getMethod ()
	Get/Set methods. More...

void	setMethod (int val)

void	setMethod (const std::string &methodName)

void	getFractureCriteria (int element, Deriv &direction, Real &value)

void	computeStressAlongDirection (Real &stress_along_dir, Index elementIndex, const Coord &direction, const type::Vec< 3, Real > &stress)
	Compute value of stress along a given direction (typically the fiber direction and transverse direction in anisotropic materials) More...

void	computeStressAlongDirection (Real &stress_along_dir, Index elementIndex, const Coord &direction)
	Compute value of stress along a given direction (typically the fiber direction and transverse direction in anisotropic materials) More...

void	computeStressAcrossDirection (Real &stress_across_dir, Index elementIndex, const Coord &direction, const type::Vec< 3, Real > &stress)
	Compute value of stress across a given direction (typically the fracture direction) More...

void	computeStressAcrossDirection (Real &stress_across_dir, Index elementIndex, const Coord &direction)
	Compute value of stress across a given direction (typically the fracture direction) More...

void	computeStress (type::Vec< 3, Real > &stress, Index elementIndex)
	Compute current stress. More...

void	getRotation (Transformation &R, Index nodeIdx)

void	getRotations ()

Public Member Functions inherited from sofa::component::solidmechanics::fem::elastic::BaseLinearElasticityFEMForceField< DataTypes >
	SOFA_CLASS (SOFA_TEMPLATE(BaseLinearElasticityFEMForceField, DataTypes), SOFA_TEMPLATE(core::behavior::ForceField, DataTypes))

	BaseLinearElasticityFEMForceField ()

void	setPoissonRatio (Real val)

void	setYoungModulus (Real val)

Real	getYoungModulusInElement (sofa::Size elementId) const

Real	getPoissonRatioInElement (sofa::Size elementId) const

Public Member Functions inherited from sofa::core::behavior::ForceField< DataTypes >
	SOFA_CLASS2 (SOFA_TEMPLATE(ForceField, DataTypes), BaseForceField, SOFA_TEMPLATE(SingleStateAccessor, DataTypes))

void	addForce (const MechanicalParams *mparams, MultiVecDerivId fId) override

void	addDForce (const MechanicalParams *mparams, MultiVecDerivId dfId) override

virtual void	addClambda (const MechanicalParams *mparams, DataVecDeriv &df, const DataVecDeriv &lambda, SReal cFactor)=delete

virtual void	addClambda (const MechanicalParams *, MultiVecDerivId, MultiVecDerivId, SReal)=delete
	Accumulate the contribution of the C compliant matrix multiplied by the given Lagrange multipliers lambda vector with the given cFactor coefficient. More...

SReal	getPotentialEnergy (const MechanicalParams *mparams) const override

void	addKToMatrix (const MechanicalParams mparams, const sofa::core::behavior::MultiMatrixAccessor matrix) override
	Compute the system matrix corresponding to . More...

void	addBToMatrix (const MechanicalParams mparams, const sofa::core::behavior::MultiMatrixAccessor matrix) override
	Compute the system matrix corresponding to . More...

virtual void	addBToMatrix (sofa::linearalgebra::BaseMatrix *matrix, SReal bFact, unsigned int &offset)

void	addToMatrix (sofa::linearalgebra::BaseMatrix *bm, unsigned offset, const IndexArray &nodeIndex, const ElementMat &em, SReal scale)

Public Member Functions inherited from sofa::core::behavior::BaseForceField
	SOFA_ABSTRACT_CLASS (BaseForceField, StateAccessor)

bool	insertInNode (objectmodel::BaseNode *node) override

bool	removeInNode (objectmodel::BaseNode *node) override

virtual void	addMBKdx (const MechanicalParams *mparams, MultiVecDerivId dfId)
	Accumulate the contribution of M, B, and/or K matrices multiplied by the dx vector with the given coefficients. More...

virtual void	addMBKToMatrix (const MechanicalParams mparams, const sofa::core::behavior::MultiMatrixAccessor matrix)
	Compute the system matrix corresponding to . More...

virtual const sofa::linearalgebra::BaseMatrix *	getComplianceMatrix (const MechanicalParams *)=delete

virtual void	addClambda (const MechanicalParams *, MultiVecDerivId, MultiVecDerivId, SReal)=delete
	Accumulate the contribution of the C compliant matrix multiplied by the given Lagrange multipliers lambda vector with the given cFactor coefficient. More...

Public Member Functions inherited from sofa::core::behavior::StateAccessor
	SOFA_ABSTRACT_CLASS (StateAccessor, objectmodel::BaseObject)

virtual const MultiLink< StateAccessor, BaseMechanicalState, BaseLink::FLAG_DUPLICATE >::Container &	getMechanicalStates () const
	Return a list of mechanical states to which this component is associated. More...

void	computeBBox (const core::ExecParams *params, bool onlyVisible=false) override

Public Member Functions inherited from sofa::core::objectmodel::BaseObject
	SOFA_CLASS (BaseObject, Base)

void	setSrc (const std::string &v, std::vector< std::string > *attributeList=nullptr)
	Sets a source Object and parses it to collect dependent Data. More...

void	setSrc (const std::string &v, const BaseObject loader, std::vector< std::string > attributeList=nullptr)

Base *	findLinkDestClass (const BaseClass destType, const std::string &path, const BaseLink link) override

virtual std::string	getPathName () const override
	Return the full path name of this object. More...

SReal	getTime () const
	Current time. More...

const BaseContext *	getContext () const

BaseContext *	getContext ()

const BaseObject *	getMaster () const

BaseObject *	getMaster ()

const VecSlaves &	getSlaves () const

BaseObject *	getSlave (const std::string &name) const

virtual void	addSlave (BaseObject::SPtr s)

virtual void	removeSlave (BaseObject::SPtr s)

virtual void	handleEvent (Event *)
	Handle an event. More...

virtual void	handleTopologyChange ()

virtual void	handleTopologyChange (core::topology::Topology *t)

void	parse (BaseObjectDescription *arg) override
	Parse the given description to assign values to this object's fields and potentially other parameters. More...

virtual void	bwdInit ()
	Initialization method called at graph creation and modification, during bottom-up traversal. More...

void	updateInternal ()
	Update method called when variables (used to compute other internal variables) are modified. More...

virtual void	storeResetState ()
	Save the initial state for later uses in reset() More...

virtual void	reset ()
	Reset to initial state. More...

virtual void	cleanup ()

Public Member Functions inherited from sofa::core::objectmodel::Base
virtual const BaseClass *	getClass () const

void	addDeprecatedAttribute (lifecycle::DeprecatedData *attribute)

void	addUpdateCallback (const std::string &name, std::initializer_list< BaseData * > inputs, std::function< sofa::core::objectmodel::ComponentState(const DataTracker &)> function, std::initializer_list< BaseData * > outputs)

void	addOutputsToCallback (const std::string &name, std::initializer_list< BaseData * > outputs)

const std::string &	getName () const
	Accessor to the object name. More...

void	setName (const std::string &n)
	Set the name of this object. More...

void	setName (const std::string &n, int counter)
	Set the name of this object, adding an integer counter. More...

std::string	getTypeName () const
	Get the type name of this object (i.e. class and template types) More...

virtual std::string	getClassName () const
	Get the class name of this object. More...

virtual std::string	getTemplateName () const final
	Get the template type names (if any) used to instantiate this object. More...

std::string	getNameSpaceName () const
	Get the template type names (if any) used to instantiate this object. More...

void	setDefinitionSourceFileName (const std::string &sourceFileName)
	Set the source filename (where the component is implemented) More...

const std::string &	getDefinitionSourceFileName () const
	Get the source filename (where the component is implemented) More...

void	setDefinitionSourceFilePos (const int)
	Set the source location (where the component is implemented) More...

int	getDefinitionSourceFilePos () const
	Get the source location (where the component is implemented) More...

void	setInstanciationSourceFileName (const std::string &sourceFileName)

const std::string &	getInstanciationSourceFileName () const

void	setInstanciationSourceFilePos (const int)

int	getInstanciationSourceFilePos () const

void	addMessage (const sofa::helper::logging::Message &m) const

size_t	countLoggedMessages (sofa::helper::logging::Message::TypeSet t=sofa::helper::logging::Message::AnyTypes) const

const std::deque< sofa::helper::logging::Message > &	getLoggedMessages () const

const std::string	getLoggedMessagesAsString (sofa::helper::logging::Message::TypeSet t=sofa::helper::logging::Message::AnyTypes) const

void	clearLoggedMessages () const

bool	notMuted () const

const sofa::core::objectmodel::TagSet &	getTags () const
	Represents the subsets the object belongs to. More...

bool	hasTag (Tag t) const
	Return true if the object belong to the given subset. More...

void	addTag (Tag t)
	Add a subset qualification to the object. More...

void	removeTag (Tag t)
	Remove a subset qualification to the object. More...

ComponentState	getComponentState () const

bool	isComponentStateValid () const

bool	isComponentStateInvalid () const

	SOFA_ATTRIBUTE_DEPRECATED__TOBASECONSTRAINT () virtual const behavior

virtual bool	parseField (const std::string &attribute, const std::string &value)
	Assign one field value (Data or Link) More...

virtual bool	hasField (const std::string &attribute) const
	Check if a given Data field or Link exists. More...

void	parseFields (const std::list< std::string > &str)
	Assign the field values stored in the given list of name + value pairs of strings. More...

virtual void	parseFields (const std::map< std::string, std::string * > &str)
	Assign the field values stored in the given map of name -> value pairs. More...

void	writeDatas (std::map< std::string, std::string * > &str)=delete
	Write the current field values to the given map of name -> value pairs. More...

void	writeDatas (std::ostream &out, const std::string &separator=" ")

BaseData *	findData (const std::string &name) const

std::vector< BaseData * >	findGlobalField (const std::string &name) const
	Find data fields given a name: several can be found as we look into the alias map. More...

BaseLink *	findLink (const std::string &name) const

std::vector< BaseLink * >	findLinks (const std::string &name) const
	Find link fields given a name: several can be found as we look into the alias map. More...

virtual void	updateLinks (bool logErrors=true)
	Update pointers in case the pointed-to objects have appeared. More...

template<class T >
BaseData::BaseInitData	initData (::sofa::core::objectmodel::Data< T > field, const char name, const char *help, ::sofa::core::objectmodel::BaseData::DataFlags dataflags)
	Helper method used to initialize a data field containing a value of type T. More...

template<class T >
BaseData::BaseInitData	initData (Data< T > field, const char name, const char *help, bool isDisplayed=true, bool isReadOnly=false)
	Helper method used to initialize a data field containing a value of type T. More...

template<class T >
Data< T >::InitData	initData (Data< T > field, const T &value, const char name, const char *help, bool isDisplayed=true, bool isReadOnly=false)
	Helper method used to initialize a data field containing a value of type T. More...

void	addData (BaseData *f, const std::string &name)

void	addData (BaseData *f)

void	removeData (BaseData *f)
	Remove a data field. More...

void	addAlias (BaseData field, const char alias)
	Add an alias to a Data. More...

void	addLink (BaseLink *l)
	Add a link. More...

void	addAlias (BaseLink link, const char alias)
	Add an alias to a Link. More...

const VecData &	getDataFields () const
	Accessor to the vector containing all the fields of this object. More...

const MapData &	getDataAliases () const
	Accessor to the map containing all the aliases of this object. More...

const VecLink &	getLinks () const
	Accessor to the vector containing all the fields of this object. More...

const MapLink &	getLinkAliases () const
	Accessor to the map containing all the aliases of this object. More...

virtual bool	findDataLinkDest (BaseData &ptr, const std::string &path, const BaseLink link)

template<class T >
bool	findLinkDest (T &ptr, const std::string &path, const BaseLink link)

Public Member Functions inherited from sofa::core::behavior::SingleStateAccessor< DataTypes >
	SOFA_ABSTRACT_CLASS (SOFA_TEMPLATE(SingleStateAccessor, DataTypes), StateAccessor)

void	init () override
	Initialization method called at graph creation and modification, during top-down traversal. More...

MechanicalState< DataTypes > *	getMState ()

const MechanicalState< DataTypes > *	getMState () const

Protected Member Functions
	TriangularFEMForceField ()
	ForceField API. More...

	~TriangularFEMForceField () override

void	computeStiffness (Stiffness &K, const StrainDisplacement &J, const MaterialStiffness &D)
	Forcefield computations. More...

void	computePrincipalStrain (Index elementIndex, TriangleInformation &triangleInfo)

void	computePrincipalStress (Index elementIndex, TriangleInformation &triangleInfo)

void	computeStressPerVertex ()
	Method to compute the averageStress per vertex. Call if. More...

virtual void	applyStiffness (VecCoord &f, Real h, const VecCoord &x, const Real &kFactor)
	f += Kx where K is the stiffness matrix and x a displacement More...

virtual void	computeMaterialStiffness (int i, Index &a, Index &b, Index &c)

void	initSmall (int i, Index &a, Index &b, Index &c)

void	accumulateForceSmall (VecCoord &f, const VecCoord &p)

void	applyStiffnessSmall (VecCoord &f, Real h, const VecCoord &x, const Real &kFactor)

void	initLarge (int i, Index &a, Index &b, Index &c)

void	accumulateForceLarge (VecCoord &f, const VecCoord &p)

void	applyStiffnessLarge (VecCoord &f, Real h, const VecCoord &x, const Real &kFactor)

Protected Member Functions inherited from sofa::component::solidmechanics::fem::elastic::BaseLinearElasticityFEMForceField< DataTypes >
void	checkPoissonRatio ()

void	checkYoungModulus ()

Real	getVecRealInElement (sofa::Size elementId, const Data< VecReal > &data, Real defaultValue) const

Protected Member Functions inherited from sofa::core::behavior::ForceField< DataTypes >
	ForceField (MechanicalState< DataTypes > *mm=nullptr)

	~ForceField () override

Protected Member Functions inherited from sofa::core::behavior::BaseForceField
	BaseForceField ()

	~BaseForceField () override=default

Protected Member Functions inherited from sofa::core::behavior::StateAccessor
	StateAccessor ()

	~StateAccessor () override=default

Protected Member Functions inherited from sofa::core::objectmodel::BaseObject
	BaseObject ()

	~BaseObject () override

virtual void	doUpdateInternal ()
	Implementation of the internal update. More...

void	changeContextLink (BaseContext before, BaseContext &after)

void	changeSlavesLink (BaseObject::SPtr ptr, std::size_t, bool add)
	This method insures that slaves objects have master and context links set correctly. More...

void	trackInternalData (const BaseData &data)
	Method called to add the Data to the DataTracker (listing the Data to track) More...

void	cleanTracker ()

bool	hasDataChanged (const BaseData &data)
	Method called to know if a tracked Data has changed. More...

Protected Member Functions inherited from sofa::core::objectmodel::Base
	Base ()

virtual	~Base ()

void	initData0 (BaseData field, BaseData::BaseInitData &res, const char name, const char *help, bool isDisplayed=true, bool isReadOnly=false)
	Helper method used by initData() More...

void	initData0 (BaseData field, BaseData::BaseInitData &res, const char name, const char *help, BaseData::DataFlags dataFlags)
	Helper method used by initData() More...

template<class T >
void	initData0 (Data< T > field, typename Data< T >::InitData &res, const T &value, const char name, const char *help, bool isDisplayed=true, bool isReadOnly=false)
	Helper method used by initData() More...

Protected Member Functions inherited from sofa::core::IntrusiveObject
virtual	~IntrusiveObject ()=default

Protected Member Functions inherited from sofa::core::behavior::SingleStateAccessor< DataTypes >
	SingleStateAccessor (MechanicalState< DataTypes > *mm=nullptr)

	~SingleStateAccessor () override=default

Additional Inherited Members
Static Protected Attributes inherited from sofa::component::solidmechanics::fem::elastic::BaseLinearElasticityFEMForceField< DataTypes >
static constexpr Real	defaultYoungModulusValue = 5000

static constexpr Real	defaultPoissonRatioValue = 0.45

Static Public Member Functions inherited from sofa::component::solidmechanics::fem::elastic::BaseLinearElasticityFEMForceField< DataTypes >
static std::pair< Real, Real >	toLameParameters (_2DMaterials, Real youngModulus, Real poissonRatio)

static std::pair< Real, Real >	toLameParameters (_3DMaterials, Real youngModulus, Real poissonRatio)

Static Public Member Functions inherited from sofa::core::behavior::ForceField< DataTypes >
static bool	canCreate (T &obj, objectmodel::BaseContext context, objectmodel::BaseObjectDescription *arg)

static std::string	shortName (const T ptr=nullptr, objectmodel::BaseObjectDescription arg=nullptr)

Static Public Member Functions inherited from sofa::core::objectmodel::BaseObject
template<class T >
static bool	canCreate (T , BaseContext , BaseObjectDescription *)
	Pre-construction check method called by ObjectFactory. More...

template<class T >
static T::SPtr	create (T , BaseContext context, BaseObjectDescription *arg)
	Construction method called by ObjectFactory. More...

Static Public Member Functions inherited from sofa::core::objectmodel::Base
static const BaseClass *	GetClass ()

template<class T >
static std::string	shortName (const T ptr=nullptr, BaseObjectDescription =nullptr)

Attribute details

◆ _anisotropicMaterial

template<class DataTypes >

bool sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::_anisotropicMaterial

protected

◆ d_computePrincipalStress

template<class DataTypes >

Data<bool> sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_computePrincipalStress

Compute principal stress for each triangle.

◆ d_criteriaValue

template<class DataTypes >

Data<Real> sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_criteriaValue

Fracturable threshold used to draw fracturable triangles.

◆ d_hosfordExponant

template<class DataTypes >

Data<Real> sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_hosfordExponant

Fracture parameters.

Exponent in the Hosford yield criteria

◆ d_initialTransformation

template<class DataTypes >

Data< sofa::type::vector<Transformation> > sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_initialTransformation

Flag activating rendering of stress directions within each triangle.

◆ d_method

template<class DataTypes >

Data<std::string> sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_method

large: large displacements, small: small displacements

◆ d_rotatedInitialElements

template<class DataTypes >

Data< sofa::type::vector<type::fixed_array<Coord,3> > > sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_rotatedInitialElements

Initial strain parameters (if FEM is initialised with predefine values)

◆ d_showFracturableTriangles

template<class DataTypes >

Data<bool> sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_showFracturableTriangles

Flag activating rendering of triangles to fracture.

◆ d_showStressValue

template<class DataTypes >

Data<bool> sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_showStressValue

Display parameters.

◆ d_showStressVector

template<class DataTypes >

Data<bool> sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_showStressVector

Flag activating rendering of stress directions within each triangle.

◆ d_triangleInfo

template<class DataTypes >

core::topology::TriangleData<sofa::type::vector<TriangleInformation> > sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_triangleInfo

Topology Data.

◆ d_vertexInfo

template<class DataTypes >

core::topology::PointData<sofa::type::vector<VertexInformation> > sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::d_vertexInfo

Internal point data.

◆ method

template<class DataTypes >

int sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::method

Forcefield intern parameters.

◆ updateMatrix

template<class DataTypes >

bool sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::updateMatrix

protected

Constructor details

◆ TriangularFEMForceField()

template<class DataTypes >

sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::TriangularFEMForceField

protected

ForceField API.

◆ ~TriangularFEMForceField()

template<class DataTypes >

sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::~TriangularFEMForceField

overrideprotected

Function details

◆ accumulateForceLarge()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::accumulateForceLarge	(	VecCoord &	f,
		const VecCoord &	p
	)

protected

◆ accumulateForceSmall()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::accumulateForceSmall	(	VecCoord &	f,
		const VecCoord &	p
	)

protected

◆ addDForce()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::addDForce	(	const core::MechanicalParams *	mparams,
		DataVecDeriv &	df,
		const DataVecDeriv &	dx
	)

overridevirtual

Internal addDForce Overloaded function, usually called from the generic addDForce version. This addDForce version directly gives access to df and dx vectors through its parameters.

Parameters

mparams
df	Output vector to fill, result of
dx	Input vector used to compute

Implements sofa::core::behavior::ForceField< DataTypes >.

◆ addForce()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::addForce	(	const core::MechanicalParams *	,
		DataVecDeriv &	f,
		const DataVecCoord &	x,
		const DataVecDeriv &	v
	)

overridevirtual

Given the current position and velocity states, update the current force vector by computing and adding the forces associated with this ForceField.

If the ForceField can be represented as a matrix, this method computes $ f += B v + K x $

This is the method that should be implemented by the component

Implements sofa::core::behavior::ForceField< DataTypes >.

◆ addKToMatrix()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::addKToMatrix	(	sofa::linearalgebra::BaseMatrix *	matrix,
		SReal	kFact,
		unsigned int &	offset
	)

overridevirtual

Internal addKToMatrix Overloaded function, usually called from the generic addKToMatrix version. This addKToMatrix version directly gives access to the matrix to fill, the stiffness factor and the offset used to identify where the force field must add its contributions in the matrix.

Parameters

matrix	the global stiffness matrix in which the force field adds its contribution. The matrix is global, i.e. different objects can add their contribution into the same large matrix. Each object adds its contribution to a different section of the matrix. That is why, an offset is used to identify where in the matrix the force field must start adding its contribution.
kFact	stiffness factor that needs to be multiplied to each matrix entry.
offset	Starting index of the submatrix to fill in the global matrix.

Reimplemented from sofa::core::behavior::ForceField< DataTypes >.

◆ applyStiffness()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::applyStiffness	(	VecCoord &	f,
		Real	h,
		const VecCoord &	x,
		const Real &	kFactor
	)

protectedvirtual

f += Kx where K is the stiffness matrix and x a displacement

◆ applyStiffnessLarge()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::applyStiffnessLarge	(	VecCoord &	f,
		Real	h,
		const VecCoord &	x,
		const Real &	kFactor
	)

protected

◆ applyStiffnessSmall()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::applyStiffnessSmall	(	VecCoord &	f,
		Real	h,
		const VecCoord &	x,
		const Real &	kFactor
	)

protected

◆ buildDampingMatrix()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::buildDampingMatrix ( core::behavior::DampingMatrix * )

finalvirtual

Reimplemented from sofa::core::behavior::BaseForceField.

◆ buildStiffnessMatrix()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::buildStiffnessMatrix ( core::behavior::StiffnessMatrix * matrix )

overridevirtual

Reimplemented from sofa::core::behavior::BaseForceField.

◆ computeElementStiffnessMatrix()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computeElementStiffnessMatrix	(	type::Mat< 9, 9, Real > &	S,
		type::Mat< 9, 9, Real > &	SR,
		const MaterialStiffness &	K,
		const StrainDisplacement &	J,
		const Transformation &	Rot
	)

◆ computeMaterialStiffness()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computeMaterialStiffness	(	int	i,
		Index &	a,
		Index &	b,
		Index &	c
	)

protectedvirtual

Reimplemented in sofa::component::solidmechanics::fem::elastic::TriangularAnisotropicFEMForceField< DataTypes >.

◆ computePrincipalStrain()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computePrincipalStrain	(	Index	elementIndex,
		TriangleInformation &	triangleInfo
	)

protected

◆ computePrincipalStress()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computePrincipalStress	(	Index	elementIndex,
		TriangleInformation &	triangleInfo
	)

protected

◆ computeStiffness()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computeStiffness	(	Stiffness &	K,
		const StrainDisplacement &	J,
		const MaterialStiffness &	D
	)

protected

Forcefield computations.

◆ computeStress()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computeStress	(	type::Vec< 3, Real > &	stress,
		Index	elementIndex
	)

Compute current stress.

◆ computeStressAcrossDirection() [1/2]

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computeStressAcrossDirection	(	Real &	stress_across_dir,
		Index	elementIndex,
		const Coord &	direction
	)

Compute value of stress across a given direction (typically the fracture direction)

◆ computeStressAcrossDirection() [2/2]

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computeStressAcrossDirection	(	Real &	stress_across_dir,
		Index	elementIndex,
		const Coord &	direction,
		const type::Vec< 3, Real > &	stress
	)

Compute value of stress across a given direction (typically the fracture direction)

◆ computeStressAlongDirection() [1/2]

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computeStressAlongDirection	(	Real &	stress_along_dir,
		Index	elementIndex,
		const Coord &	direction
	)

Compute value of stress along a given direction (typically the fiber direction and transverse direction in anisotropic materials)

◆ computeStressAlongDirection() [2/2]

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computeStressAlongDirection	(	Real &	stress_along_dir,
		Index	elementIndex,
		const Coord &	direction,
		const type::Vec< 3, Real > &	stress
	)

Compute value of stress along a given direction (typically the fiber direction and transverse direction in anisotropic materials)

◆ computeStressPerVertex()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::computeStressPerVertex

protected

Method to compute the averageStress per vertex. Call if.

See also: d_showStressValue is true

◆ createTriangleInformation()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::createTriangleInformation	(	Index	triangleIndex,
		TriangleInformation &	,
		const core::topology::BaseMeshTopology::Triangle &	t,
		const sofa::type::vector< Index > &	,
		const sofa::type::vector< SReal > &
	)

Method to initialize

See also: TriangleInformation when a new Triangle is created. Will be set as creation callback in the TriangleData; d_triangleInfo

◆ draw()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::draw ( const core::visual::VisualParams * )

overridevirtual

Render internal data of this object, for debugging purposes.

Reimplemented from sofa::core::objectmodel::BaseObject.

◆ getFractureCriteria()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::getFractureCriteria	(	int	element,
		Deriv &	direction,
		Real &	value
	)

◆ getMethod()

template<class DataTypes >

int sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::getMethod ( )

inline

Get/Set methods.

◆ getPotentialEnergy()

template<class DataTypes >

SReal sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::getPotentialEnergy	(	const core::MechanicalParams *	mparams,
		const DataVecCoord &	x
	)		const

overridevirtual

Implements sofa::core::behavior::ForceField< DataTypes >.

◆ getRotation()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::getRotation	(	Transformation &	R,
		Index	nodeIdx
	)

◆ getRotations()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::getRotations

◆ init()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::init ( void )

overridevirtual

Initialization method called at graph creation and modification, during top-down traversal.

Reimplemented from sofa::component::solidmechanics::fem::elastic::BaseLinearElasticityFEMForceField< DataTypes >.

◆ initLarge()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::initLarge	(	int	i,
		Index &	a,
		Index &	b,
		Index &	c
	)

protected

◆ initSmall()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::initSmall	(	int	i,
		Index &	a,
		Index &	b,
		Index &	c
	)

protected

◆ reinit()

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::reinit

overridevirtual

Update method called when variables used in precomputation are modified.

Reimplemented from sofa::core::objectmodel::BaseObject.

◆ setMethod() [1/2]

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::setMethod ( const std::string & methodName )

◆ setMethod() [2/2]

template<class DataTypes >

void sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::setMethod ( int val )

◆ SOFA_CLASS()

template<class DataTypes >

sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >::SOFA_CLASS	(	SOFA_TEMPLATE(TriangularFEMForceField< DataTypes >, DataTypes)	,
		SOFA_TEMPLATE(BaseLinearElasticityFEMForceField, DataTypes)
	)

Enum details

◆ anonymous enum

template<class DataTypes >

anonymous enum

Enumerator
LARGE	Symbol of small displacements triangle solver.
SMALL	Symbol of large displacements triangle solver.

Detailed Description

template<class DataTypes> class sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >

Classes

Public Attributes

Protected Attributes

Public Member Functions

Protected Member Functions

Additional Inherited Members

Attribute details

◆ _anisotropicMaterial

◆ d_computePrincipalStress

◆ d_criteriaValue

◆ d_hosfordExponant

◆ d_initialTransformation

◆ d_method

◆ d_rotatedInitialElements

◆ d_showFracturableTriangles

◆ d_showStressValue

◆ d_showStressVector

◆ d_triangleInfo

◆ d_vertexInfo

◆ method

◆ updateMatrix

Constructor details

◆ TriangularFEMForceField()

◆ ~TriangularFEMForceField()

Function details

◆ accumulateForceLarge()

◆ accumulateForceSmall()

◆ addDForce()

◆ addForce()

◆ addKToMatrix()

◆ applyStiffness()

◆ applyStiffnessLarge()

◆ applyStiffnessSmall()

◆ buildDampingMatrix()

◆ buildStiffnessMatrix()

◆ computeElementStiffnessMatrix()

◆ computeMaterialStiffness()

◆ computePrincipalStrain()

◆ computePrincipalStress()

◆ computeStiffness()

◆ computeStress()

◆ computeStressAcrossDirection() [1/2]

◆ computeStressAcrossDirection() [2/2]

◆ computeStressAlongDirection() [1/2]

◆ computeStressAlongDirection() [2/2]

◆ computeStressPerVertex()

◆ createTriangleInformation()

◆ draw()

◆ getFractureCriteria()

◆ getMethod()

◆ getPotentialEnergy()

◆ getRotation()

◆ getRotations()

◆ init()

◆ initLarge()

◆ initSmall()

◆ reinit()

◆ setMethod() [1/2]

◆ setMethod() [2/2]

◆ SOFA_CLASS()

Enum details

◆ anonymous enum

template<class DataTypes>
class sofa::component::solidmechanics::fem::elastic::TriangularFEMForceField< DataTypes >