OOFEM  2.3
Public Member Functions | Protected Types | Protected Member Functions | Protected Attributes | List of all members
oofem::MPlasticMaterial Class Referenceabstract

This class implements a general plastic material. More...

#include <mplasticmaterial.h>

+ Inheritance diagram for oofem::MPlasticMaterial:
+ Collaboration diagram for oofem::MPlasticMaterial:

Public Member Functions

 MPlasticMaterial (int n, Domain *d)
 
virtual ~MPlasticMaterial ()
 
virtual int hasNonLinearBehaviour ()
 Returns nonzero if receiver is non linear. More...
 
virtual int hasMaterialModeCapability (MaterialMode mode)
 Tests if material supports material mode. More...
 
virtual const char * giveClassName () const
 
LinearElasticMaterialgiveLinearElasticMaterial ()
 Returns reference to undamaged (bulk) material. More...
 
virtual bool isCharacteristicMtrxSymmetric (MatResponseMode rMode)
 Returns true if stiffness matrix of receiver is symmetric. 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 giveRealStressVector (FloatArray &answer, GaussPoint *, const FloatArray &, TimeStep *)
 Computes the real stress vector for given total strain and integration point. More...
 
virtual void giveRealStressVector_3d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 Default implementation relies on giveRealStressVector for second Piola-Kirchoff stress. More...
 
virtual void giveRealStressVector_PlaneStrain (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_3d. More...
 
virtual void giveRealStressVector_PlaneStress (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_StressControl. More...
 
virtual void giveRealStressVector_1d (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 Default implementation relies on giveRealStressVector_StressControl. More...
 
virtual int giveIPValue (FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *tStep)
 Returns the integration point corresponding value in Reduced form. More...
 
virtual int giveSizeOfFullHardeningVarsVector ()
 
virtual int giveSizeOfReducedHardeningVarsVector (GaussPoint *) const
 
virtual MaterialStatusCreateStatus (GaussPoint *gp) const
 Creates new copy of associated status and inserts it into given integration point. More...
 
- Public Member Functions inherited from oofem::StructuralMaterial
 StructuralMaterial (int n, Domain *d)
 Constructor. More...
 
virtual ~StructuralMaterial ()
 Destructor. More...
 
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 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_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_Warping (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, 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 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 giveEshelbyStressVector_PlaneStrain (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedF, TimeStep *tStep)
 Prototype for computation of Eshelby stress. More...
 
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)
 
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...
 
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 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...
 
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 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 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 double give (int aProperty, GaussPoint *gp)
 Returns the value of material property 'aProperty'. 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 ()
 
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 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...
 
virtual const char * giveInputRecordName () const =0
 
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 int checkConsistency ()
 Allows programmer to test some internal data, before computation begins. More...
 
virtual void printOutputAt (FILE *file, TimeStep *tStep)
 Prints output of receiver to stream, for given time step. More...
 
virtual InterfacegiveInterface (InterfaceType t)
 Interface requesting service. More...
 
std::string errorInfo (const char *func) const
 Returns string for prepending output (used by error reporting macros). More...
 

Protected Types

enum  ReturnMappingAlgoType { mpm_ClosestPoint, mpm_CuttingPlane }
 Protected type to determine the return mapping algorithm. More...
 
enum  functType { yieldFunction, loadFunction }
 Type that allows to distinguish between yield function and loading function. More...
 
enum  plastType { associatedPT, nonassociatedPT }
 

Protected Member Functions

void closestPointReturn (FloatArray &answer, IntArray &activeConditionMap, FloatArray &gamma, GaussPoint *gp, const FloatArray &totalStrain, FloatArray &plasticStrainR, FloatArray &strainSpaceHardeningVariables, TimeStep *tStep)
 
void cuttingPlaneReturn (FloatArray &answer, IntArray &activeConditionMap, FloatArray &gamma, GaussPoint *gp, const FloatArray &totalStrain, FloatArray &plasticStrainR, FloatArray &strainSpaceHardeningVariables, TimeStep *tStep)
 
void computeGradientVector (FloatArray &answer, functType ftype, int isurf, GaussPoint *gp, const FloatArray &fullStressVector, const FloatArray &fullStressSpaceHardeningVars)
 
void computeResidualVector (FloatArray &answer, GaussPoint *gp, const FloatArray &gamma, const IntArray &activeConditionMap, const FloatArray &plasticStrainVectorR, const FloatArray &strainSpaceHardeningVariables, std::vector< FloatArray > &gradVec)
 
virtual void giveConsistentStiffnessMatrix (FloatMatrix &answer, MatResponseMode, GaussPoint *gp, TimeStep *tStep)
 
virtual void giveElastoPlasticStiffnessMatrix (FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep)
 
void computeAlgorithmicModuli (FloatMatrix &answer, GaussPoint *gp, const FloatMatrix &elasticModuliInverse, const FloatMatrix &hardeningModuliInverse, const FloatArray &gamma, const IntArray &activeConditionMap, const FloatArray &fullStressVector, const FloatArray &fullStressSpaceHardeningVars)
 
void computeDiagModuli (FloatMatrix &answer, GaussPoint *gp, FloatMatrix &elasticModuliInverse, FloatMatrix &hardeningModuliInverse)
 
virtual void computeStressSpaceHardeningVars (FloatArray &answer, GaussPoint *gp, const FloatArray &strainSpaceHardeningVariables)=0
 
virtual double computeYieldValueAt (GaussPoint *gp, int isurf, const FloatArray &stressVector, const FloatArray &stressSpaceHardeningVars)=0
 
virtual void computeHardeningReducedModuli (FloatMatrix &answer, GaussPoint *gp, const FloatArray &strainSpaceHardeningVariables, TimeStep *tStep)=0
 
virtual void computeStressGradientVector (FloatArray &answer, functType ftype, int isurf, GaussPoint *gp, const FloatArray &stressVector, const FloatArray &stressSpaceHardeningVars)=0
 
virtual void computeStressSpaceHardeningVarsReducedGradient (FloatArray &answer, functType ftype, int isurf, GaussPoint *gp, const FloatArray &stressVector, const FloatArray &stressSpaceHardeningVars)=0
 
virtual int hasHardening ()
 
virtual void computeReducedGradientMatrix (FloatMatrix &answer, int isurf, GaussPoint *gp, const FloatArray &stressVector, const FloatArray &stressSpaceHardeningVars)=0
 
virtual void computeTrialStressIncrement (FloatArray &answer, GaussPoint *gp, const FloatArray &strainIncrement, TimeStep *tStep)
 
virtual void computeReducedElasticModuli (FloatMatrix &answer, GaussPoint *gp, TimeStep *tStep)
 
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 void give2dBeamLayerStiffMtrx (FloatMatrix &answer, MatResponseMode, GaussPoint *gp, TimeStep *tStep)
 Method for computing 2d beam layer stiffness matrix of receiver. More...
 
virtual void givePlateLayerStiffMtrx (FloatMatrix &answer, MatResponseMode, GaussPoint *gp, TimeStep *tStep)
 Method for computing 2d plate layer stiffness matrix of receiver. More...
 
virtual void giveFiberStiffMtrx (FloatMatrix &answer, MatResponseMode, GaussPoint *gp, TimeStep *tStep)
 Method for computing 1d fiber stiffness matrix of receiver. More...
 

Protected Attributes

LinearElasticMateriallinearElasticMaterial
 Reference to bulk (undamaged) material. More...
 
int nsurf
 Number of yield surfaces. More...
 
enum
oofem::MPlasticMaterial::ReturnMappingAlgoType 
rmType
 
enum
oofem::MPlasticMaterial::plastType 
plType
 
- 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 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 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)
 
- 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 a general plastic material.

It is assumed to be a base class for many material models based on different yield conditions and hardening laws. Sress return mapping algorithm is based on general return mapping algorithm, with following assumptions

Definition at line 142 of file mplasticmaterial.h.

Member Enumeration Documentation

Type that allows to distinguish between yield function and loading function.

Enumerator
yieldFunction 
loadFunction 

Definition at line 152 of file mplasticmaterial.h.

Enumerator
associatedPT 
nonassociatedPT 

Definition at line 153 of file mplasticmaterial.h.

Protected type to determine the return mapping algorithm.

Enumerator
mpm_ClosestPoint 
mpm_CuttingPlane 

Definition at line 150 of file mplasticmaterial.h.

Constructor & Destructor Documentation

oofem::MPlasticMaterial::MPlasticMaterial ( int  n,
Domain d 
)

Definition at line 48 of file mplasticmaterial.C.

References associatedPT, linearElasticMaterial, mpm_ClosestPoint, plType, and rmType.

oofem::MPlasticMaterial::~MPlasticMaterial ( )
virtual

Definition at line 59 of file mplasticmaterial.C.

References linearElasticMaterial.

Member Function Documentation

void oofem::MPlasticMaterial::closestPointReturn ( FloatArray answer,
IntArray activeConditionMap,
FloatArray gamma,
GaussPoint gp,
const FloatArray totalStrain,
FloatArray plasticStrainR,
FloatArray strainSpaceHardeningVariables,
TimeStep tStep 
)
protected
void oofem::MPlasticMaterial::computeAlgorithmicModuli ( FloatMatrix answer,
GaussPoint gp,
const FloatMatrix elasticModuliInverse,
const FloatMatrix hardeningModuliInverse,
const FloatArray gamma,
const IntArray activeConditionMap,
const FloatArray fullStressVector,
const FloatArray fullStressSpaceHardeningVars 
)
protected
void oofem::MPlasticMaterial::computeDiagModuli ( FloatMatrix answer,
GaussPoint gp,
FloatMatrix elasticModuliInverse,
FloatMatrix hardeningModuliInverse 
)
protected
void oofem::MPlasticMaterial::computeGradientVector ( FloatArray answer,
functType  ftype,
int  isurf,
GaussPoint gp,
const FloatArray fullStressVector,
const FloatArray fullStressSpaceHardeningVars 
)
protected
virtual void oofem::MPlasticMaterial::computeHardeningReducedModuli ( FloatMatrix answer,
GaussPoint gp,
const FloatArray strainSpaceHardeningVariables,
TimeStep tStep 
)
protectedpure virtual
void oofem::MPlasticMaterial::computeReducedElasticModuli ( FloatMatrix answer,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual
virtual void oofem::MPlasticMaterial::computeReducedGradientMatrix ( FloatMatrix answer,
int  isurf,
GaussPoint gp,
const FloatArray stressVector,
const FloatArray stressSpaceHardeningVars 
)
protectedpure virtual
void oofem::MPlasticMaterial::computeResidualVector ( FloatArray answer,
GaussPoint gp,
const FloatArray gamma,
const IntArray activeConditionMap,
const FloatArray plasticStrainVectorR,
const FloatArray strainSpaceHardeningVariables,
std::vector< FloatArray > &  gradVec 
)
protected
virtual void oofem::MPlasticMaterial::computeStressGradientVector ( FloatArray answer,
functType  ftype,
int  isurf,
GaussPoint gp,
const FloatArray stressVector,
const FloatArray stressSpaceHardeningVars 
)
protectedpure virtual
virtual void oofem::MPlasticMaterial::computeStressSpaceHardeningVars ( FloatArray answer,
GaussPoint gp,
const FloatArray strainSpaceHardeningVariables 
)
protectedpure virtual
virtual void oofem::MPlasticMaterial::computeStressSpaceHardeningVarsReducedGradient ( FloatArray answer,
functType  ftype,
int  isurf,
GaussPoint gp,
const FloatArray stressVector,
const FloatArray stressSpaceHardeningVars 
)
protectedpure virtual
void oofem::MPlasticMaterial::computeTrialStressIncrement ( FloatArray answer,
GaussPoint gp,
const FloatArray strainIncrement,
TimeStep tStep 
)
protectedvirtual
virtual double oofem::MPlasticMaterial::computeYieldValueAt ( GaussPoint gp,
int  isurf,
const FloatArray stressVector,
const FloatArray stressSpaceHardeningVars 
)
protectedpure virtual
MaterialStatus * oofem::MPlasticMaterial::CreateStatus ( GaussPoint gp) const
virtual

Creates new copy of associated status and inserts it into given integration point.

Parameters
gpIntegration point where newly created status will be stored.
Returns
Reference to new status.

Reimplemented from oofem::Material.

Reimplemented in oofem::J2MPlasticMaterial, and oofem::RankinePlasticMaterial.

Definition at line 82 of file mplasticmaterial.C.

References oofem::FEMComponent::giveDomain(), and giveSizeOfReducedHardeningVarsVector().

void oofem::MPlasticMaterial::cuttingPlaneReturn ( FloatArray answer,
IntArray activeConditionMap,
FloatArray gamma,
GaussPoint gp,
const FloatArray totalStrain,
FloatArray plasticStrainR,
FloatArray strainSpaceHardeningVariables,
TimeStep tStep 
)
protected
void oofem::MPlasticMaterial::give1dStressStiffMtrx ( FloatMatrix answer,
MatResponseMode  mmode,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual

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 1245 of file mplasticmaterial.C.

References giveConsistentStiffnessMatrix(), giveElastoPlasticStiffnessMatrix(), giveLinearElasticMaterial(), oofem::StructuralMaterial::giveStiffnessMatrix(), mpm_ClosestPoint, and rmType.

void oofem::MPlasticMaterial::give2dBeamLayerStiffMtrx ( FloatMatrix answer,
MatResponseMode  mmode,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual

Method for computing 2d beam layer stiffness matrix of receiver.

Default implementation computes 3d stiffness matrix using give3dMaterialStiffnessMatrix and reduces it to 2d beam layer 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 1265 of file mplasticmaterial.C.

References giveConsistentStiffnessMatrix(), giveElastoPlasticStiffnessMatrix(), giveLinearElasticMaterial(), oofem::StructuralMaterial::giveStiffnessMatrix(), mpm_ClosestPoint, and rmType.

void oofem::MPlasticMaterial::give3dMaterialStiffnessMatrix ( FloatMatrix answer,
MatResponseMode  mode,
GaussPoint gp,
TimeStep tStep 
)
virtual

Computes full 3d material stiffness matrix at given integration point, time, respecting load history in integration point.

Parameters
answerComputed results.
modeMaterial response mode.
gpIntegration point.
tStepTime step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Definition at line 1155 of file mplasticmaterial.C.

References oofem::StructuralMaterial::give3dMaterialStiffnessMatrix(), giveConsistentStiffnessMatrix(), giveElastoPlasticStiffnessMatrix(), giveLinearElasticMaterial(), oofem::GaussPoint::giveMaterialMode(), mpm_ClosestPoint, OOFEM_ERROR, and rmType.

virtual const char* oofem::MPlasticMaterial::giveClassName ( ) const
inlinevirtual
Returns
Class name of the receiver.

Reimplemented from oofem::StructuralMaterial.

Reimplemented in oofem::J2MPlasticMaterial, and oofem::RankinePlasticMaterial.

Definition at line 162 of file mplasticmaterial.h.

void oofem::MPlasticMaterial::giveConsistentStiffnessMatrix ( FloatMatrix answer,
MatResponseMode  mode,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual
void oofem::MPlasticMaterial::giveElastoPlasticStiffnessMatrix ( FloatMatrix answer,
MatResponseMode  mode,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual
void oofem::MPlasticMaterial::giveFiberStiffMtrx ( FloatMatrix answer,
MatResponseMode  mmode,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual

Method for computing 1d fiber stiffness matrix of receiver.

Default implementation computes 3d stiffness matrix using give3dMaterialStiffnessMatrix and reduces it to 1d fiber 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 1311 of file mplasticmaterial.C.

References giveConsistentStiffnessMatrix(), giveElastoPlasticStiffnessMatrix(), giveLinearElasticMaterial(), oofem::StructuralMaterial::giveStiffnessMatrix(), mpm_ClosestPoint, and rmType.

int oofem::MPlasticMaterial::giveIPValue ( FloatArray answer,
GaussPoint gp,
InternalStateType  type,
TimeStep tStep 
)
virtual

Returns the integration point corresponding value in Reduced form.

Parameters
answerContain corresponding ip value, zero sized if not available.
gpIntegration point to which the value refers.
typeDetermines the type of internal variable.
tStepDetermines the time step.
Returns
Nonzero if the assignment can be done, zero if this type of variable is not supported.
Todo:
Fill in correct full form values here! This just adds zeros!
Todo:
Fill in correct full form values here! This just adds zeros!

Reimplemented from oofem::StructuralMaterial.

Definition at line 1334 of file mplasticmaterial.C.

References oofem::StructuralMaterial::computePrincipalValues(), oofem::StructuralMaterial::giveFullSymVectorForm(), oofem::StructuralMaterial::giveIPValue(), oofem::GaussPoint::giveMaterialMode(), oofem::MPlasticMaterialStatus::givePlasticStrainVector(), oofem::Material::giveStatus(), and oofem::principal_strain.

LinearElasticMaterial* oofem::MPlasticMaterial::giveLinearElasticMaterial ( )
inline
void oofem::MPlasticMaterial::givePlaneStrainStiffMtrx ( FloatMatrix answer,
MatResponseMode  mmode,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual

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 1223 of file mplasticmaterial.C.

References giveConsistentStiffnessMatrix(), giveElastoPlasticStiffnessMatrix(), giveLinearElasticMaterial(), oofem::StructuralMaterial::giveStiffnessMatrix(), mpm_ClosestPoint, and rmType.

void oofem::MPlasticMaterial::givePlaneStressStiffMtrx ( FloatMatrix answer,
MatResponseMode  mmode,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual

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 1199 of file mplasticmaterial.C.

References giveConsistentStiffnessMatrix(), giveElastoPlasticStiffnessMatrix(), giveLinearElasticMaterial(), oofem::StructuralMaterial::giveStiffnessMatrix(), mpm_ClosestPoint, and rmType.

void oofem::MPlasticMaterial::givePlateLayerStiffMtrx ( FloatMatrix answer,
MatResponseMode  mmode,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual

Method for computing 2d plate layer stiffness matrix of receiver.

Default implementation computes 3d stiffness matrix using give3dMaterialStiffnessMatrix and reduces it to 2d plate layer 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 1288 of file mplasticmaterial.C.

References giveConsistentStiffnessMatrix(), giveElastoPlasticStiffnessMatrix(), giveLinearElasticMaterial(), oofem::StructuralMaterial::giveStiffnessMatrix(), mpm_ClosestPoint, and rmType.

void oofem::MPlasticMaterial::giveRealStressVector ( FloatArray answer,
GaussPoint gp,
const FloatArray reducedStrain,
TimeStep tStep 
)
virtual

Computes the real stress vector for given total strain and integration point.

The total strain is defined as strain computed directly from displacement field at given time. The stress independent parts (temperature, eigenstrains) are subtracted in constitutive driver. The service should use previously reached equilibrium history variables. Also it should update temporary history variables in status according to newly reached state. The temporary history variables are moved into equilibrium ones after global structure equilibrium has been reached by iteration process.

Parameters
answerStress vector in reduced form. For large deformations it is treated as the second Piola-Kirchoff stress.
gpIntegration point.
reducedStrainStrain vector in reduced form. For large deformations it is treated as the Green-Lagrange strain.
tStepCurrent time step (most models are able to respond only when tStep is current time step).
Todo:
Move this to StructuralCrossSection ?

Reimplemented from oofem::StructuralMaterial.

Definition at line 89 of file mplasticmaterial.C.

References oofem::FloatArray::at(), closestPointReturn(), cuttingPlaneReturn(), oofem::GaussPoint::giveMaterialMode(), oofem::StructuralMaterial::giveReducedSymVectorForm(), oofem::MPlasticMaterialStatus::giveStateFlag(), oofem::Material::giveStatus(), oofem::StructuralMaterial::giveStressDependentPartOfStrainVector(), oofem::StructuralMaterialStatus::giveTempStressVector(), oofem::Material::initTempStatus(), oofem::MPlasticMaterialStatus::letTempPlasticStrainVectorBe(), oofem::MPlasticMaterialStatus::letTempStateFlagBe(), oofem::MPlasticMaterialStatus::letTempStrainSpaceHardeningVarsVectorBe(), oofem::StructuralMaterialStatus::letTempStrainVectorBe(), oofem::StructuralMaterialStatus::letTempStressVectorBe(), mpm_ClosestPoint, nsurf, oofem::MPlasticMaterialStatus::PM_Elastic, oofem::MPlasticMaterialStatus::PM_Unloading, oofem::MPlasticMaterialStatus::PM_Yielding, rmType, oofem::MPlasticMaterialStatus::setTempActiveConditionMap(), and oofem::MPlasticMaterialStatus::setTempGamma().

Referenced by giveRealStressVector_1d(), giveRealStressVector_3d(), giveRealStressVector_PlaneStrain(), and giveRealStressVector_PlaneStress().

virtual void oofem::MPlasticMaterial::giveRealStressVector_1d ( FloatArray answer,
GaussPoint gp,
const FloatArray reducedE,
TimeStep tStep 
)
inlinevirtual

Default implementation relies on giveRealStressVector_StressControl.

Reimplemented from oofem::StructuralMaterial.

Definition at line 188 of file mplasticmaterial.h.

References giveRealStressVector().

virtual void oofem::MPlasticMaterial::giveRealStressVector_3d ( FloatArray answer,
GaussPoint gp,
const FloatArray reducedE,
TimeStep tStep 
)
inlinevirtual

Default implementation relies on giveRealStressVector for second Piola-Kirchoff stress.

Reimplemented from oofem::StructuralMaterial.

Definition at line 182 of file mplasticmaterial.h.

References giveRealStressVector().

virtual void oofem::MPlasticMaterial::giveRealStressVector_PlaneStrain ( FloatArray answer,
GaussPoint gp,
const FloatArray reducedE,
TimeStep tStep 
)
inlinevirtual

Default implementation relies on giveRealStressVector_3d.

Reimplemented from oofem::StructuralMaterial.

Definition at line 184 of file mplasticmaterial.h.

References giveRealStressVector().

virtual void oofem::MPlasticMaterial::giveRealStressVector_PlaneStress ( FloatArray answer,
GaussPoint gp,
const FloatArray reducedE,
TimeStep tStep 
)
inlinevirtual

Default implementation relies on giveRealStressVector_StressControl.

Reimplemented from oofem::StructuralMaterial.

Definition at line 186 of file mplasticmaterial.h.

References giveRealStressVector().

virtual int oofem::MPlasticMaterial::giveSizeOfFullHardeningVarsVector ( )
inlinevirtual

Reimplemented in oofem::J2MPlasticMaterial.

Definition at line 194 of file mplasticmaterial.h.

virtual int oofem::MPlasticMaterial::giveSizeOfReducedHardeningVarsVector ( GaussPoint ) const
inlinevirtual

Reimplemented in oofem::J2MPlasticMaterial.

Definition at line 195 of file mplasticmaterial.h.

Referenced by oofem::RankinePlasticMaterial::CreateStatus(), and CreateStatus().

virtual int oofem::MPlasticMaterial::hasHardening ( )
inlineprotectedvirtual

Reimplemented in oofem::RankinePlasticMaterial, and oofem::J2MPlasticMaterial.

Definition at line 248 of file mplasticmaterial.h.

Referenced by computeAlgorithmicModuli().

int oofem::MPlasticMaterial::hasMaterialModeCapability ( MaterialMode  mode)
virtual

Tests if material supports material mode.

Parameters
modeRequired material mode.
Returns
Nonzero if supported, zero otherwise.

Reimplemented from oofem::StructuralMaterial.

Definition at line 69 of file mplasticmaterial.C.

virtual int oofem::MPlasticMaterial::hasNonLinearBehaviour ( )
inlinevirtual

Returns nonzero if receiver is non linear.

Reimplemented from oofem::Material.

Definition at line 160 of file mplasticmaterial.h.

virtual bool oofem::MPlasticMaterial::isCharacteristicMtrxSymmetric ( MatResponseMode  rMode)
inlinevirtual

Returns true if stiffness matrix of receiver is symmetric.

Default implementation returns true.

Reimplemented from oofem::Material.

Definition at line 171 of file mplasticmaterial.h.

Member Data Documentation

LinearElasticMaterial* oofem::MPlasticMaterial::linearElasticMaterial
protected
int oofem::MPlasticMaterial::nsurf
protected
enum oofem::MPlasticMaterial::plastType oofem::MPlasticMaterial::plType
protected
enum oofem::MPlasticMaterial::ReturnMappingAlgoType oofem::MPlasticMaterial::rmType
protected

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

This page is part of the OOFEM documentation. Copyright (c) 2011 Borek Patzak
Project e-mail: info@oofem.org
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