OOFEM  2.4
OOFEM.org - Object Oriented Finite Element Solver
oofem::IsotropicLinearElasticMaterial Class Reference

This class implements an isotropic linear elastic material in a finite element problem. More...

#include <isolinearelasticmaterial.h>

+ Inheritance diagram for oofem::IsotropicLinearElasticMaterial:
+ Collaboration diagram for oofem::IsotropicLinearElasticMaterial:

Public Member Functions

 IsotropicLinearElasticMaterial (int n, Domain *d)
 Creates a new IsotropicLinearElasticMaterial class instance with given number belonging to domain d. More...
 
 IsotropicLinearElasticMaterial (int n, Domain *d, double E, double nu)
 Creates a new IsotropicLinearElasticMaterial class instance with given number belonging to domain d. More...
 
virtual ~IsotropicLinearElasticMaterial ()
 Destructor. More...
 
virtual void giveThermalDilatationVector (FloatArray &answer, GaussPoint *gp, TimeStep *tStep)
 Returns a vector of coefficients of thermal dilatation in direction of each material principal (local) axis. More...
 
virtual const char * giveClassName () const
 
virtual const char * giveInputRecordName () const
 
virtual IRResultType initializeFrom (InputRecord *ir)
 Initializes receiver according to object description stored in input record. More...
 
virtual void giveInputRecord (DynamicInputRecord &input)
 Setups the input record string of receiver. More...
 
virtual double give (int aProperty, GaussPoint *gp)
 Returns the value of material property 'aProperty'. More...
 
double giveYoungsModulus ()
 Returns Young's modulus. More...
 
double givePoissonsRatio ()
 Returns Poisson's ratio. More...
 
double giveShearModulus ()
 Returns the shear elastic modulus $ G = \frac{E}{2(1+\nu)} $. More...
 
double giveBulkModulus ()
 Returns the bulk elastic modulus $ K = \frac{E}{3(1-2\nu)} $. More...
 
virtual void give3dMaterialStiffnessMatrix (FloatMatrix &answer, MatResponseMode, GaussPoint *gp, TimeStep *tStep)
 Computes full 3d material stiffness matrix at given integration point, time, respecting load history in integration point. More...
 
virtual void givePlaneStressStiffMtrx (FloatMatrix &answer, MatResponseMode, GaussPoint *gp, TimeStep *tStep)
 Method for computing plane stress stiffness matrix of receiver. More...
 
virtual void givePlaneStrainStiffMtrx (FloatMatrix &answer, MatResponseMode, GaussPoint *gp, TimeStep *tStep)
 Method for computing plane strain stiffness matrix of receiver. More...
 
virtual void give1dStressStiffMtrx (FloatMatrix &answer, MatResponseMode, GaussPoint *gp, TimeStep *tStep)
 Method for computing 1d stiffness matrix of receiver. More...
 
virtual double giveQcElasticParamneter ()
 
virtual double giveQcPlasticParamneter ()
 
virtual InterfacegiveInterface (InterfaceType t)
 Interface requesting service. More...
 
- Public Member Functions inherited from oofem::LinearElasticMaterial
 LinearElasticMaterial (int n, Domain *d)
 Constructor. More...
 
virtual ~LinearElasticMaterial ()
 Destructor. More...
 
virtual void giveRealStressVector_3d (FloatArray &answer, GaussPoint *gp, const FloatArray &strain, TimeStep *tStep)
 Default implementation relies on giveRealStressVector for second Piola-Kirchoff stress. More...
 
virtual void giveRealStressVector_PlaneStrain (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedStrain, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_3d. More...
 
virtual void giveRealStressVector_3dDegeneratedShell (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 
virtual void giveRealStressVector_PlaneStress (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedStrain, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_StressControl. More...
 
virtual void giveRealStressVector_1d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedStrain, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_StressControl. More...
 
virtual void giveRealStressVector_Warping (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedStrain, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_StressControl. More...
 
virtual void giveRealStressVector_2dBeamLayer (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_StressControl. More...
 
virtual void giveRealStressVector_PlateLayer (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_StressControl. More...
 
virtual void giveRealStressVector_Fiber (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_StressControl. More...
 
virtual void giveEshelbyStressVector_PlaneStrain (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 Prototype for computation of Eshelby stress. More...
 
double giveEnergyDensity (GaussPoint *gp, TimeStep *tStep)
 
virtual int giveIPValue (FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *tStep)
 Returns the integration point corresponding value in Reduced form. More...
 
virtual MaterialStatusCreateStatus (GaussPoint *gp) const
 Creates new copy of associated status and inserts it into given integration point. More...
 
virtual int hasNonLinearBehaviour ()
 Returns nonzero if receiver is non linear. More...
 
virtual int hasCastingTimeSupport ()
 Tests if material supports casting time. More...
 
- Public Member Functions inherited from oofem::StructuralMaterial
 StructuralMaterial (int n, Domain *d)
 Constructor. More...
 
virtual ~StructuralMaterial ()
 Destructor. More...
 
virtual int hasMaterialModeCapability (MaterialMode mode)
 Tests if material supports material mode. More...
 
virtual void giveStiffnessMatrix (FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep)
 Computes the stiffness matrix for giveRealStressVector of receiver in given integration point, respecting its history. More...
 
virtual void giveRealStressVector (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedStrain, TimeStep *tStep)
 Computes the real stress vector for given total strain and integration point. More...
 
virtual void giveRealStressVector_StressControl (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, const IntArray &strainControl, TimeStep *tStep)
 Iteratively calls giveRealStressVector_3d to find the stress controlled equal to zero¬∑ More...
 
virtual void giveRealStressVector_ShellStressControl (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, const IntArray &strainControl, TimeStep *tStep)
 
virtual void giveRealStressVector_Lattice2d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 
virtual void giveRealStressVector_Lattice3d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 
virtual void giveRealStressVector_2dPlateSubSoil (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 Default implementation is not provided. More...
 
virtual void giveRealStressVector_3dBeamSubSoil (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 
void give_dPdF_from (const FloatMatrix &dSdE, FloatMatrix &answer, GaussPoint *gp)
 
void convert_dSdE_2_dPdF (FloatMatrix &answer, const FloatMatrix &dSdE, const FloatArray &S, const FloatArray &F, MaterialMode matMode)
 
double giveReferenceTemperature ()
 Returns the reference temperature of receiver. More...
 
virtual void computeStressIndependentStrainVector (FloatArray &answer, GaussPoint *gp, TimeStep *tStep, ValueModeType mode)
 Computes reduced strain vector in given integration point, generated by internal processes in material, which are independent on loading in particular integration point. More...
 
virtual void computeStressIndependentStrainVector_3d (FloatArray &answer, GaussPoint *gp, TimeStep *tStep, ValueModeType mode)
 
virtual void give3dMaterialStiffnessMatrix_dPdF (FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep)
 
virtual void give3dMaterialStiffnessMatrix_dCde (FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep)
 
void giveStressDependentPartOfStrainVector (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedStrainVector, TimeStep *tStep, ValueModeType mode)
 Method for subtracting from reduced space strain vector its stress-independent parts (caused by temperature, shrinkage, creep and possibly by other phenomena). More...
 
void giveStressDependentPartOfStrainVector_3d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedStrainVector, TimeStep *tStep, ValueModeType mode)
 
virtual int setIPValue (const FloatArray &value, GaussPoint *gp, InternalStateType type)
 Sets the value of a certain variable at a given integration point to the given value. More...
 
virtual void give2dBeamLayerStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 Method for computing 2d beam layer stiffness matrix of receiver. More...
 
virtual void givePlateLayerStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 Method for computing 2d plate layer stiffness matrix of receiver. More...
 
virtual void giveFiberStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 Method for computing 1d fiber stiffness matrix of receiver. More...
 
virtual void give2dLatticeStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 Method for computing 2d lattice stiffness matrix of receiver. More...
 
virtual void give3dLatticeStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 Method for computing 3d lattice stiffness matrix of receiver. More...
 
virtual void give2dPlateSubSoilStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 Method for computing stiffness matrix of plate subsoil model. More...
 
virtual void give3dBeamSubSoilStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 Method for computing stiffness matrix of beam3d subsoil model. More...
 
virtual void giveFirstPKStressVector_3d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 Default implementation relies on giveRealStressVector for second Piola-Kirchoff stress. More...
 
virtual void giveFirstPKStressVector_PlaneStrain (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 Default implementation relies on giveFirstPKStressVector_3d. More...
 
virtual void giveFirstPKStressVector_PlaneStress (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 Default implementation relies on giveFirstPKStressVector_3d. More...
 
virtual void giveFirstPKStressVector_1d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 Default implementation relies on giveFirstPKStressVector_3d. More...
 
virtual void giveCauchyStressVector_3d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 
virtual void giveCauchyStressVector_PlaneStrain (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 
virtual void giveCauchyStressVector_PlaneStress (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 
virtual void giveCauchyStressVector_1d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 
virtual void givePlaneStressStiffMtrx_dPdF (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 
virtual void givePlaneStressStiffMtrx_dCde (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 
virtual void givePlaneStrainStiffMtrx_dPdF (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 
virtual void givePlaneStrainStiffMtrx_dCde (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 
virtual void give1dStressStiffMtrx_dPdF (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 
virtual void give1dStressStiffMtrx_dCde (FloatMatrix &answer, MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep)
 
- Public Member Functions inherited from oofem::Material
 Material (int n, Domain *d)
 Constructor. More...
 
virtual ~Material ()
 Destructor. More...
 
virtual bool isCharacteristicMtrxSymmetric (MatResponseMode rMode)
 Returns true if stiffness matrix of receiver is symmetric Default implementation returns true. More...
 
virtual bool hasProperty (int aProperty, GaussPoint *gp)
 Returns true if 'aProperty' exists on material. More...
 
virtual void modifyProperty (int aProperty, double value, GaussPoint *gp)
 Modify 'aProperty', which already exists on material. More...
 
double giveCastingTime ()
 
virtual bool isActivated (TimeStep *tStep)
 
virtual void printYourself ()
 Prints receiver state on stdout. Useful for debugging. More...
 
virtual contextIOResultType saveIPContext (DataStream &stream, ContextMode mode, GaussPoint *gp)
 Stores integration point state to output stream. More...
 
virtual contextIOResultType restoreIPContext (DataStream &stream, ContextMode mode, GaussPoint *gp)
 Reads integration point state to output stream. More...
 
virtual int checkConsistency ()
 Allows programmer to test some internal data, before computation begins. More...
 
virtual int initMaterial (Element *element)
 Optional function to call specific procedures when initializing a material. More...
 
virtual MaterialStatusgiveStatus (GaussPoint *gp) const
 Returns material status of receiver in given integration point. More...
 
virtual int packUnknowns (DataStream &buff, TimeStep *tStep, GaussPoint *ip)
 Pack all necessary data of integration point (according to element parallel_mode) into given communication buffer. More...
 
virtual int unpackAndUpdateUnknowns (DataStream &buff, TimeStep *tStep, GaussPoint *ip)
 Unpack and updates all necessary data of given integration point (according to element parallel_mode) into given communication buffer. More...
 
virtual int estimatePackSize (DataStream &buff, GaussPoint *ip)
 Estimates the necessary pack size to hold all packed data of receiver. More...
 
virtual double predictRelativeComputationalCost (GaussPoint *gp)
 Returns the weight representing relative computational cost of receiver The reference material model is linear isotropic material - its weight is set to 1.0 The other material models should compare to this reference model. More...
 
virtual double predictRelativeRedistributionCost (GaussPoint *gp)
 Returns the relative redistribution cost of the receiver. More...
 
virtual void initTempStatus (GaussPoint *gp)
 Initializes temporary variables stored in integration point status at the beginning of new time step. More...
 
- Public Member Functions inherited from oofem::FEMComponent
 FEMComponent (int n, Domain *d)
 Regular constructor, creates component with given number and belonging to given domain. More...
 
virtual ~FEMComponent ()
 Virtual destructor. More...
 
DomaingiveDomain () const
 
virtual void setDomain (Domain *d)
 Sets associated Domain. More...
 
int giveNumber () const
 
void setNumber (int num)
 Sets number of receiver. More...
 
virtual void updateLocalNumbering (EntityRenumberingFunctor &f)
 Local renumbering support. More...
 
virtual contextIOResultType saveContext (DataStream &stream, ContextMode mode, void *obj=NULL)
 Stores receiver state to output stream. More...
 
virtual contextIOResultType restoreContext (DataStream &stream, ContextMode mode, void *obj=NULL)
 Restores the receiver state previously written in stream. More...
 
virtual void printOutputAt (FILE *file, TimeStep *tStep)
 Prints output of receiver to stream, for given time step. More...
 
std::string errorInfo (const char *func) const
 Returns string for prepending output (used by error reporting macros). More...
 
- Public Member Functions inherited from oofem::QCMaterialExtensionInterface
 QCMaterialExtensionInterface ()
 Constructor. More...
 
virtual ~QCMaterialExtensionInterface ()
 Destructor. More...
 
- Public Member Functions inherited from oofem::Interface
 Interface ()
 Constructor. More...
 
virtual ~Interface ()
 

Static Public Member Functions

static double computeBulkModulusFromYoungAndPoisson (double young, double nu)
 Computes bulk modulus from given Young's modulus and Poisson's ratio. More...
 
static double computeShearModulusFromYoungAndPoisson (double young, double nu)
 Computes shear modulus from given Young's modulus and Poisson's ratio. More...
 
- Static Public Member Functions inherited from oofem::StructuralMaterial
static int giveSymVI (int ind1, int ind2)
 
static int giveVI (int ind1, int ind2)
 
static int giveVoigtVectorMask (IntArray &answer, MaterialMode mmode)
 Returns a mask of the vector indicies corresponding to components in a general (non-symmetric) second order tensor of some stress/strain/deformation measure that performes work. More...
 
static int giveVoigtSymVectorMask (IntArray &answer, MaterialMode mmode)
 The same as giveVoigtVectorMask but returns a mask corresponding to a symmetric second order tensor. More...
 
static void giveInvertedVoigtVectorMask (IntArray &answer, MaterialMode mmode)
 Gives the inverted version of giveVoigtVectorMask. More...
 
static int giveSizeOfVoigtVector (MaterialMode mmode)
 Returns the size of reduced stress/strain vector according to given mode. More...
 
static int giveSizeOfVoigtSymVector (MaterialMode mmode)
 Returns the size of symmetric part of a reduced stress/strain vector according to given mode. More...
 
static void giveFullVectorForm (FloatArray &answer, const FloatArray &strainVector, MaterialMode matMode)
 Converts the reduced symmetric Voigt vector (2nd order tensor) to full form. More...
 
static void giveFullVectorFormF (FloatArray &answer, const FloatArray &strainVector, MaterialMode matMode)
 Converts the reduced deformation gradient Voigt vector (2nd order tensor). More...
 
static void giveFullSymVectorForm (FloatArray &answer, const FloatArray &vec, MaterialMode matMode)
 Converts the reduced unsymmetric Voigt vector (2nd order tensor) to full form. More...
 
static void giveReducedVectorForm (FloatArray &answer, const FloatArray &vec, MaterialMode matMode)
 Converts the full symmetric Voigt vector (2nd order tensor) to reduced form. More...
 
static void giveReducedSymVectorForm (FloatArray &answer, const FloatArray &vec, MaterialMode matMode)
 Converts the full unsymmetric Voigt vector (2nd order tensor) to reduced form. More...
 
static void giveFullSymMatrixForm (FloatMatrix &answer, const FloatMatrix &red, MaterialMode matMode)
 Converts the full unsymmetric Voigt matrix (4th order tensor) to reduced form. More...
 
static void giveReducedMatrixForm (FloatMatrix &answer, const FloatMatrix &full, MaterialMode matMode)
 Converts the full symmetric Voigt matrix (4th order tensor) to reduced form. More...
 
static void giveReducedSymMatrixForm (FloatMatrix &answer, const FloatMatrix &full, MaterialMode matMode)
 Converts the full unsymmetric Voigt matrix (4th order tensor) to reduced form. More...
 
static void transformStrainVectorTo (FloatArray &answer, const FloatMatrix &base, const FloatArray &strainVector, bool transpose=false)
 Transforms 3d strain vector into another coordinate system. More...
 
static void transformStressVectorTo (FloatArray &answer, const FloatMatrix &base, const FloatArray &stressVector, bool transpose=false)
 Transforms 3d stress vector into another coordinate system. More...
 
static double computeVonMisesStress (const FloatArray *currentStress)
 Computes equivalent of von Mises stress. More...
 
static void giveStrainVectorTranformationMtrx (FloatMatrix &answer, const FloatMatrix &base, bool transpose=false)
 Computes 3d strain vector transformation matrix from standard vector transformation matrix. More...
 
static void give2DStrainVectorTranformationMtrx (FloatMatrix &answer, const FloatMatrix &base, bool transpose=false)
 Computes 2d strain vector transformation matrix from standard vector transformation matrix. More...
 
static void giveStressVectorTranformationMtrx (FloatMatrix &answer, const FloatMatrix &base, bool transpose=false)
 Computes 3d stress vector transformation matrix from standard vector transformation matrix. More...
 
static void givePlaneStressVectorTranformationMtrx (FloatMatrix &answer, const FloatMatrix &base, bool transpose=false)
 Computes 2d stress vector transformation matrix from standard vector transformation matrix. More...
 
static void sortPrincDirAndValCloseTo (FloatArray *pVal, FloatMatrix *pDir, FloatMatrix *toPDir)
 Method for sorting newly computed principal values (pVal) and corresponding principal directions (pDir) to be closed to some (often previous) principal directions (toPDir). More...
 
static void computePrincipalValues (FloatArray &answer, const FloatArray &s, stressStrainPrincMode mode)
 Common functions for convenience. More...
 
static void computePrincipalValDir (FloatArray &answer, FloatMatrix &dir, const FloatArray &s, stressStrainPrincMode mode)
 Computes principal values and directions of stress or strain vector. More...
 
static double computeDeviatoricVolumetricSplit (FloatArray &dev, const FloatArray &s)
 Computes split of receiver into deviatoric and volumetric part. More...
 
static void computeDeviatoricVolumetricSum (FloatArray &s, const FloatArray &dev, double mean)
 
static void applyDeviatoricElasticCompliance (FloatArray &strain, const FloatArray &stress, double EModulus, double nu)
 
static void applyDeviatoricElasticCompliance (FloatArray &strain, const FloatArray &stress, double GModulus)
 
static void applyDeviatoricElasticStiffness (FloatArray &stress, const FloatArray &strain, double EModulus, double nu)
 
static void applyDeviatoricElasticStiffness (FloatArray &stress, const FloatArray &strain, double GModulus)
 
static void applyElasticStiffness (FloatArray &stress, const FloatArray &strain, double EModulus, double nu)
 
static void applyElasticCompliance (FloatArray &strain, const FloatArray &stress, double EModulus, double nu)
 
static double computeStressNorm (const FloatArray &stress)
 
static double computeFirstInvariant (const FloatArray &s)
 
static double computeSecondStressInvariant (const FloatArray &s)
 
static double computeThirdStressInvariant (const FloatArray &s)
 
static double computeFirstCoordinate (const FloatArray &s)
 
static double computeSecondCoordinate (const FloatArray &s)
 
static double computeThirdCoordinate (const FloatArray &s)
 

Protected Attributes

double E
 Young's modulus. More...
 
double nu
 Poisson's ratio. More...
 
double G
 Shear modulus. More...
 
- Protected Attributes inherited from oofem::LinearElasticMaterial
double preCastStiffnessReduction
 artificial isotropic damage to reflect reduction in stiffness for time < castingTime. More...
 
- Protected Attributes inherited from oofem::StructuralMaterial
double referenceTemperature
 Reference temperature (temperature, when material has been built into structure). More...
 
- Protected Attributes inherited from oofem::Material
Dictionary propertyDictionary
 Property dictionary. More...
 
double castingTime
 Casting time. More...
 
- Protected Attributes inherited from oofem::FEMComponent
int number
 Component number. More...
 
Domaindomain
 Link to domain object, useful for communicating with other FEM components. More...
 

Additional Inherited Members

- Static Public Attributes inherited from oofem::StructuralMaterial
static std::vector< std::vector< int > > vIindex
 Voigt index map. More...
 
static std::vector< std::vector< int > > svIndex
 Symmetric Voigt index map. More...
 

Detailed Description

This class implements an isotropic linear elastic material in a finite element problem.

For large deformation analysis it becomes the St. Venant-Kirchoff hyperelasticity model.

Tasks:

  • Returning standard material stiffness matrix for 3d-case. according to current state determined by using data stored in Gausspoint.
  • methods give2dPlaneStressMtrx, givePlaneStrainMtrx, give1dStressMtrx are introduced since form of this matrices is well known, and for faster response mainly in linear elastic problems.
  • Returning a material property (method 'give'). Only for non-standard elements.
  • Returning real stress state vector(tensor) at gauss point for 3d - case.

Definition at line 70 of file isolinearelasticmaterial.h.

Constructor & Destructor Documentation

oofem::IsotropicLinearElasticMaterial::IsotropicLinearElasticMaterial ( int  n,
Domain d 
)
inline

Creates a new IsotropicLinearElasticMaterial class instance with given number belonging to domain d.

Parameters
nmaterial model number in domain
ddomain which receiver belongs to

Definition at line 87 of file isolinearelasticmaterial.h.

oofem::IsotropicLinearElasticMaterial::IsotropicLinearElasticMaterial ( int  n,
Domain d,
double  E,
double  nu 
)

Creates a new IsotropicLinearElasticMaterial class instance with given number belonging to domain d.

Parameters
nMaterial model number in domain.
dDomain which receiver belongs to.
EYoung modulus.
nuPoisson ratio.

Definition at line 47 of file isolinearelasticmaterial.C.

References E, G, and nu.

virtual oofem::IsotropicLinearElasticMaterial::~IsotropicLinearElasticMaterial ( )
inlinevirtual

Destructor.

Definition at line 98 of file isolinearelasticmaterial.h.

References giveThermalDilatationVector().

Member Function Documentation

static double oofem::IsotropicLinearElasticMaterial::computeBulkModulusFromYoungAndPoisson ( double  young,
double  nu 
)
inlinestatic

Computes bulk modulus from given Young's modulus and Poisson's ratio.

Parameters
youngYoung's modulus ( $ E $).
nuPoisson's ratio ( $ \nu $).
Returns
Bulk modulus ( $ K = E/(3*(1-2*nu) $).

Definition at line 158 of file isolinearelasticmaterial.h.

References nu.

Referenced by oofem::DustMaterial::computeAndSetBulkAndShearModuli().

static double oofem::IsotropicLinearElasticMaterial::computeShearModulusFromYoungAndPoisson ( double  young,
double  nu 
)
inlinestatic

Computes shear modulus from given Young's modulus and Poisson's ratio.

Parameters
youngYoung's modulus ( $ E $).
nuPoisson's ratio ( $ \nu $).
Returns
Shear modulus ( $ G = \frac{E}{2 (1+\nu)} $).

Definition at line 169 of file isolinearelasticmaterial.h.

References nu.

Referenced by oofem::DustMaterial::computeAndSetBulkAndShearModuli().

double oofem::IsotropicLinearElasticMaterial::give ( int  aProperty,
GaussPoint gp 
)
virtual

Returns the value of material property 'aProperty'.

Property must be identified by unique int id. Integration point also passed to allow for materials with spatially varying properties

Parameters
aPropertyID of property requested.
gpIntegration point,
Returns
Property value.

Reimplemented from oofem::Material.

Definition at line 94 of file isolinearelasticmaterial.C.

References E, Ex, Ey, Ez, G, oofem::Material::give(), Gxy, Gxz, Gyz, nu, NYxy, NYxz, NYyx, NYyz, NYzx, and NYzy.

Referenced by oofem::FCMMaterial::give(), giveInputRecordName(), oofem::DruckerPragerPlasticitySM::giveRegAlgorithmicStiffMatrix(), oofem::TutorialMaterial::giveThermalDilatationVector(), giveThermalDilatationVector(), oofem::DruckerPragerPlasticitySM::giveVertexAlgorithmicStiffMatrix(), and oofem::DruckerPragerPlasticitySM::performLocalStressReturn().

void oofem::IsotropicLinearElasticMaterial::give1dStressStiffMtrx ( FloatMatrix answer,
MatResponseMode  mmode,
GaussPoint gp,
TimeStep tStep 
)
virtual

Method for computing 1d stiffness matrix of receiver.

Default implementation computes 3d stiffness matrix using give3dMaterialStiffnessMatrix and reduces it to 1d stiffness using reduce method described above. However, this reduction is quite time consuming and if it is possible, it is recommended to overload this method and provide direct method for computing particular stiffness matrix.

Parameters
answerStiffness matrix.
mmodeMaterial response mode.
gpIntegration point, which load history is used.
tStepTime step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Definition at line 226 of file isolinearelasticmaterial.C.

References oofem::FloatMatrix::at(), oofem::Material::castingTime, E, oofem::TimeStep::giveIntrinsicTime(), oofem::LinearElasticMaterial::preCastStiffnessReduction, oofem::FloatMatrix::resize(), and oofem::FloatMatrix::times().

Referenced by giveBulkModulus().

double oofem::IsotropicLinearElasticMaterial::giveBulkModulus ( )
inline
virtual const char* oofem::IsotropicLinearElasticMaterial::giveClassName ( ) const
inlinevirtual
Returns
Class name of the receiver.

Reimplemented from oofem::LinearElasticMaterial.

Definition at line 110 of file isolinearelasticmaterial.h.

void oofem::IsotropicLinearElasticMaterial::giveInputRecord ( DynamicInputRecord input)
virtual
virtual const char* oofem::IsotropicLinearElasticMaterial::giveInputRecordName ( ) const
inlinevirtual
Returns
Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 111 of file isolinearelasticmaterial.h.

References _IFT_IsotropicLinearElasticMaterial_Name, give(), giveInputRecord(), and initializeFrom().

virtual Interface* oofem::IsotropicLinearElasticMaterial::giveInterface ( InterfaceType  t)
inlinevirtual

Interface requesting service.

See also
InterfaceType
Returns
Requested interface if implemented, otherwise NULL.

Reimplemented from oofem::FEMComponent.

Definition at line 178 of file isolinearelasticmaterial.h.

References oofem::QCMaterialExtensionInterfaceType.

void oofem::IsotropicLinearElasticMaterial::givePlaneStrainStiffMtrx ( FloatMatrix answer,
MatResponseMode  mmode,
GaussPoint gp,
TimeStep tStep 
)
virtual

Method for computing plane strain stiffness matrix of receiver.

Default implementation computes 3d stiffness matrix using give3dMaterialStiffnessMatrix and reduces it to plane strain stiffness using reduce method described above. However, this reduction is quite time consuming and if it is possible, it is recommended to overload this method and provide direct method for computing particular stiffness matrix. Note: as already described, if zero strain component is imposed (Plane strain, ..) this condition must be taken into account in geometrical relations, and corresponding component has to be included in reduced vector. (So plane strain conditions are $ \epsilon_z = \gamma_{xz} = \gamma_{yz} = 0 $, but relations for $ \epsilon_z$ and $\sigma_z$ are included).

Parameters
answerStiffness matrix.
mmodeMaterial response mode.
gpIntegration point, which load history is used.
tStepTime step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Definition at line 193 of file isolinearelasticmaterial.C.

References oofem::FloatMatrix::at(), oofem::Material::castingTime, E, G, oofem::TimeStep::giveIntrinsicTime(), nu, oofem::LinearElasticMaterial::preCastStiffnessReduction, oofem::FloatMatrix::resize(), oofem::FloatMatrix::times(), and oofem::FloatMatrix::zero().

Referenced by giveBulkModulus().

void oofem::IsotropicLinearElasticMaterial::givePlaneStressStiffMtrx ( FloatMatrix answer,
MatResponseMode  mmode,
GaussPoint gp,
TimeStep tStep 
)
virtual

Method for computing plane stress stiffness matrix of receiver.

Default implementation computes 3d stiffness matrix using give3dMaterialStiffnessMatrix and reduces it to plane stress stiffness using reduce method described above. However, this reduction is quite time consuming and if it is possible, it is recommended to overload this method and provide direct method for computing particular stiffness matrix.

Parameters
answerStiffness matrix.
mmodeMaterial response mode.
gpIntegration point, which load history is used.
tStepTime step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Definition at line 164 of file isolinearelasticmaterial.C.

References oofem::FloatMatrix::at(), oofem::Material::castingTime, E, G, oofem::TimeStep::giveIntrinsicTime(), oofem::Material::giveStatus(), nu, oofem::LinearElasticMaterial::preCastStiffnessReduction, oofem::FloatMatrix::resize(), oofem::FloatMatrix::times(), and oofem::FloatMatrix::zero().

Referenced by giveBulkModulus().

double oofem::IsotropicLinearElasticMaterial::givePoissonsRatio ( )
inline
virtual double oofem::IsotropicLinearElasticMaterial::giveQcElasticParamneter ( )
inlinevirtual

Implements oofem::QCMaterialExtensionInterface.

Definition at line 175 of file isolinearelasticmaterial.h.

References E.

virtual double oofem::IsotropicLinearElasticMaterial::giveQcPlasticParamneter ( )
inlinevirtual

Implements oofem::QCMaterialExtensionInterface.

Definition at line 176 of file isolinearelasticmaterial.h.

double oofem::IsotropicLinearElasticMaterial::giveShearModulus ( )
inlinevirtual
void oofem::IsotropicLinearElasticMaterial::giveThermalDilatationVector ( FloatArray answer,
GaussPoint gp,
TimeStep tStep 
)
virtual

Returns a vector of coefficients of thermal dilatation in direction of each material principal (local) axis.

Parameters
answerVector of thermal dilatation coefficients.
gpIntegration point.
tStepTime step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Definition at line 241 of file isolinearelasticmaterial.C.

References oofem::FloatArray::at(), give(), oofem::FloatArray::resize(), tAlpha, and oofem::FloatArray::zero().

Referenced by oofem::DruckerPragerPlasticitySM::giveThermalDilatationVector(), oofem::DustMaterial::giveThermalDilatationVector(), and ~IsotropicLinearElasticMaterial().

IRResultType oofem::IsotropicLinearElasticMaterial::initializeFrom ( InputRecord ir)
virtual

Member Data Documentation

double oofem::IsotropicLinearElasticMaterial::G
protected

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

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