OOFEM  2.4
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oofem::DruckerPragerCutMat Class Reference

This class implements an isotropic elasto-plasto-damage material with Drucker-Prager yield condition, tension cut-off, non-associated flow rule, linear isotropic hardening and isotropic damage. More...

#include <druckerpragercutmat.h>

+ Inheritance diagram for oofem::DruckerPragerCutMat:
+ Collaboration diagram for oofem::DruckerPragerCutMat:

Public Member Functions

 DruckerPragerCutMat (int n, Domain *d)
 
virtual ~DruckerPragerCutMat ()
 
virtual int hasMaterialModeCapability (MaterialMode mode)
 Tests if material supports material mode. More...
 
virtual IRResultType initializeFrom (InputRecord *ir)
 Initializes receiver according to object description stored in input record. 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 bool isCharacteristicMtrxSymmetric (MatResponseMode rMode)
 Returns true if stiffness matrix of receiver is symmetric Default implementation returns true. More...
 
virtual const char * giveClassName () const
 
virtual const char * giveInputRecordName () const
 
LinearElasticMaterialgiveLinearElasticMaterial ()
 Returns a reference to the basic elastic material. More...
 
virtual int giveSizeOfFullHardeningVarsVector ()
 
virtual int giveSizeOfReducedHardeningVarsVector (GaussPoint *) const
 
- Public Member Functions inherited from oofem::MPlasticMaterial2
 MPlasticMaterial2 (int n, Domain *d)
 
virtual ~MPlasticMaterial2 ()
 
LinearElasticMaterialgiveLinearElasticMaterial ()
 Returns reference to undamaged (bulk) material. 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 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 double computeDamage (GaussPoint *gp, const FloatArray &strainSpaceHardeningVariables, TimeStep *tStep)
 
- Public Member Functions inherited from oofem::StructuralMaterial
 StructuralMaterial (int n, Domain *d)
 Constructor. More...
 
virtual ~StructuralMaterial ()
 Destructor. 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 giveRealStressVector_3dBeamSubSoil (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
 
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)
 
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 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 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 ()
 
virtual bool isActivated (TimeStep *tStep)
 
virtual int hasCastingTimeSupport ()
 Tests if material supports casting time. More...
 
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...
 
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 Member Functions

virtual int giveMaxNumberOfActiveYieldConds (GaussPoint *gp)
 
virtual double computeYieldValueAt (GaussPoint *gp, int isurf, const FloatArray &stressVector, const FloatArray &strainSpaceHardeningVariables)
 Computes the value of yield function. More...
 
virtual void computeStressGradientVector (FloatArray &answer, functType ftype, int isurf, GaussPoint *gp, const FloatArray &stressVector, const FloatArray &stressSpaceHardeningVars)
 Computes the stress gradient of yield/loading function (df/d_sigma). More...
 
virtual void computeReducedSSGradientMatrix (FloatMatrix &gradientMatrix, int isurf, GaussPoint *gp, const FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVariables)
 Computes second derivative of yield/loading function with respect to stress. More...
 
virtual void computeReducedElasticModuli (FloatMatrix &answer, GaussPoint *gp, TimeStep *tStep)
 
virtual int hasHardening ()
 Functions related to hardening. More...
 
virtual void computeStrainHardeningVarsIncrement (FloatArray &answer, GaussPoint *gp, const FloatArray &stress, const FloatArray &dlambda, const FloatArray &dplasticStrain, const IntArray &activeConditionMap)
 Compute dot(kappa_1), dot(kappa_2) etc. More...
 
virtual void computeKGradientVector (FloatArray &answer, functType ftype, int isurf, GaussPoint *gp, FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVariables)
 Computes the derivative of yield/loading function with respect to kappa_1, kappa_2 etc. More...
 
virtual void computeReducedSKGradientMatrix (FloatMatrix &gradientMatrix, int isurf, GaussPoint *gp, const FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVariables)
 computes mixed derivative of load function with respect to stress and hardening variables More...
 
virtual void computeReducedHardeningVarsSigmaGradient (FloatMatrix &answer, GaussPoint *gp, const IntArray &activeConditionMap, const FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVars, const FloatArray &dlambda)
 computes dk(i)/dsig(j) gradient matrix More...
 
virtual void computeReducedHardeningVarsLamGradient (FloatMatrix &answer, GaussPoint *gp, int actSurf, const IntArray &activeConditionMap, const FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVars, const FloatArray &dlambda)
 computes dKappa_i/dLambda_j More...
 
virtual int giveIPValue (FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *tStep)
 Returns the integration point corresponding value in Reduced form. More...
 
- Protected Member Functions inherited from oofem::MPlasticMaterial2
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 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 FloatArray &gamma, const IntArray &activeConditionMap, const FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVariables)
 
void computeReducedStressGradientVector (FloatArray &answer, functType ftype, int isurf, GaussPoint *gp, const FloatArray &stressVector, const FloatArray &strainSpaceHardeningVariables)
 
virtual void computeTrialStressIncrement (FloatArray &answer, GaussPoint *gp, const FloatArray &strainIncrement, TimeStep *tStep)
 Computes full-space trial stress increment (elastic). 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 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...
 
long getPopulationSignature (IntArray &mask)
 
int testPopulation (long pop)
 
void clearPopulationSet ()
 
void addNewPopulation (IntArray &mask)
 
int getNewPopulation (IntArray &result, IntArray &candidateMask, int degree, int size)
 

Protected Attributes

double G
 Elastic shear modulus. More...
 
double K
 Elastic bulk modulus. More...
 
double H
 Hardening modulus. More...
 
double sigT
 Uniaxial tensile strength for cut-off. More...
 
double tau0
 Initial yield stress under pure shear. More...
 
double alpha
 Friction coefficient. More...
 
double alphaPsi
 Dilatancy coefficient (allowing non-associated plasticity). More...
 
double yieldTol
 Tolerance of the error in the yield criterion. More...
 
int newtonIter
 Maximum number of iterations in lambda search. More...
 
double omegaCrit
 Maximum damage value. More...
 
double a
 Parameter for damage computation from cumulative plastic strain. More...
 
- Protected Attributes inherited from oofem::MPlasticMaterial2
LinearElasticMateriallinearElasticMaterial
 Reference to bulk (undamaged) material. More...
 
int nsurf
 Number of yield surfaces. More...
 
enum oofem::MPlasticMaterial2::ReturnMappingAlgoType rmType
 
enum oofem::MPlasticMaterial2::plastType plType
 
bool iterativeUpdateOfActiveConds
 Flag indicating whether iterative update of a set of active yield conditions takes place. More...
 
std::set< long > populationSet
 Set for keeping record of generated populations of active yield conditions during return. 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 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)
 
- 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...
 
- Protected Types inherited from oofem::MPlasticMaterial2
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 }
 

Detailed Description

This class implements an isotropic elasto-plasto-damage material with Drucker-Prager yield condition, tension cut-off, non-associated flow rule, linear isotropic hardening and isotropic damage.

Definition at line 63 of file druckerpragercutmat.h.

Constructor & Destructor Documentation

oofem::DruckerPragerCutMat::~DruckerPragerCutMat ( )
virtual

Definition at line 69 of file druckerpragercutmat.C.

Member Function Documentation

void oofem::DruckerPragerCutMat::computeKGradientVector ( FloatArray answer,
functType  ftype,
int  isurf,
GaussPoint gp,
FloatArray fullStressVector,
const FloatArray strainSpaceHardeningVariables 
)
protectedvirtual

Computes the derivative of yield/loading function with respect to kappa_1, kappa_2 etc.

Implements oofem::MPlasticMaterial2.

Definition at line 255 of file druckerpragercutmat.C.

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

Referenced by hasHardening().

void oofem::DruckerPragerCutMat::computeReducedElasticModuli ( FloatMatrix answer,
GaussPoint gp,
TimeStep tStep 
)
protectedvirtual
void oofem::DruckerPragerCutMat::computeReducedHardeningVarsLamGradient ( FloatMatrix answer,
GaussPoint gp,
int  actSurf,
const IntArray activeConditionMap,
const FloatArray fullStressVector,
const FloatArray strainSpaceHardeningVars,
const FloatArray dlambda 
)
protectedvirtual
void oofem::DruckerPragerCutMat::computeReducedHardeningVarsSigmaGradient ( FloatMatrix answer,
GaussPoint gp,
const IntArray activeConditionMap,
const FloatArray fullStressVector,
const FloatArray strainSpaceHardeningVars,
const FloatArray dlambda 
)
protectedvirtual
void oofem::DruckerPragerCutMat::computeReducedSKGradientMatrix ( FloatMatrix gradientMatrix,
int  isurf,
GaussPoint gp,
const FloatArray fullStressVector,
const FloatArray strainSpaceHardeningVariables 
)
protectedvirtual

computes mixed derivative of load function with respect to stress and hardening variables

Implements oofem::MPlasticMaterial2.

Definition at line 267 of file druckerpragercutmat.C.

References oofem::GaussPoint::giveMaterialMode(), oofem::StructuralMaterial::giveSizeOfVoigtSymVector(), oofem::FloatMatrix::resize(), and oofem::FloatMatrix::zero().

Referenced by hasHardening().

void oofem::DruckerPragerCutMat::computeReducedSSGradientMatrix ( FloatMatrix gradientMatrix,
int  isurf,
GaussPoint gp,
const FloatArray fullStressVector,
const FloatArray strainSpaceHardeningVariables 
)
protectedvirtual
void oofem::DruckerPragerCutMat::computeStrainHardeningVarsIncrement ( FloatArray answer,
GaussPoint gp,
const FloatArray stress,
const FloatArray dlambda,
const FloatArray dplasticStrain,
const IntArray activeConditionMap 
)
protectedvirtual

Compute dot(kappa_1), dot(kappa_2) etc.

Implements oofem::MPlasticMaterial2.

Definition at line 244 of file druckerpragercutmat.C.

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

Referenced by hasHardening().

void oofem::DruckerPragerCutMat::computeStressGradientVector ( FloatArray answer,
functType  ftype,
int  isurf,
GaussPoint gp,
const FloatArray stressVector,
const FloatArray strainSpaceHardeningVariables 
)
protectedvirtual
double oofem::DruckerPragerCutMat::computeYieldValueAt ( GaussPoint gp,
int  isurf,
const FloatArray stressVector,
const FloatArray strainSpaceHardeningVariables 
)
protectedvirtual
MaterialStatus * oofem::DruckerPragerCutMat::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::MPlasticMaterial2.

Definition at line 109 of file druckerpragercutmat.C.

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

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

Reimplemented from oofem::MPlasticMaterial2.

Definition at line 115 of file druckerpragercutmat.h.

virtual const char* oofem::DruckerPragerCutMat::giveInputRecordName ( ) const
inlinevirtual
Returns
Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 116 of file druckerpragercutmat.h.

References _IFT_DruckerPragerCutMat_Name.

int oofem::DruckerPragerCutMat::giveIPValue ( FloatArray answer,
GaussPoint gp,
InternalStateType  type,
TimeStep tStep 
)
protectedvirtual

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:
Actually export the relevant damage value here!
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::MPlasticMaterial2.

Definition at line 298 of file druckerpragercutmat.C.

References oofem::MPlasticMaterial2::giveIPValue(), oofem::FloatArray::resize(), and oofem::FloatArray::zero().

Referenced by hasHardening().

LinearElasticMaterial* oofem::DruckerPragerCutMat::giveLinearElasticMaterial ( )
inline

Returns a reference to the basic elastic material.

Definition at line 119 of file druckerpragercutmat.h.

References oofem::MPlasticMaterial2::linearElasticMaterial.

Referenced by computeReducedElasticModuli().

virtual int oofem::DruckerPragerCutMat::giveMaxNumberOfActiveYieldConds ( GaussPoint gp)
inlineprotectedvirtual
virtual int oofem::DruckerPragerCutMat::giveSizeOfFullHardeningVarsVector ( )
inlinevirtual

Reimplemented from oofem::MPlasticMaterial2.

Definition at line 121 of file druckerpragercutmat.h.

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

Reimplemented from oofem::MPlasticMaterial2.

Definition at line 122 of file druckerpragercutmat.h.

Referenced by CreateStatus().

virtual int oofem::DruckerPragerCutMat::hasHardening ( )
inlineprotectedvirtual
int oofem::DruckerPragerCutMat::hasMaterialModeCapability ( MaterialMode  mode)
virtual

Tests if material supports material mode.

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

Reimplemented from oofem::MPlasticMaterial2.

Definition at line 74 of file druckerpragercutmat.C.

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

Returns nonzero if receiver is non linear.

Reimplemented from oofem::MPlasticMaterial2.

Definition at line 112 of file druckerpragercutmat.h.

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

Initializes receiver according to object description stored in input record.

This function is called immediately after creating object using constructor. Input record can be imagined as data record in component database belonging to receiver. Receiver may use value-name extracting functions to extract particular field from record.

See also
IR_GIVE_FIELD
IR_GIVE_OPTIONAL_FIELD
Parameters
irInput record to initialize from.
Returns
IRResultType

Reimplemented from oofem::StructuralMaterial.

Definition at line 81 of file druckerpragercutmat.C.

References _IFT_DruckerPragerCutMat_a, _IFT_DruckerPragerCutMat_alpha, _IFT_DruckerPragerCutMat_alphapsi, _IFT_DruckerPragerCutMat_h, _IFT_DruckerPragerCutMat_newtonIter, _IFT_DruckerPragerCutMat_omegaCrit, _IFT_DruckerPragerCutMat_sigT, _IFT_DruckerPragerCutMat_tau0, _IFT_DruckerPragerCutMat_yieldTol, a, alpha, alphaPsi, G, H, oofem::LinearElasticMaterial::initializeFrom(), oofem::StructuralMaterial::initializeFrom(), IR_GIVE_FIELD, IR_GIVE_OPTIONAL_FIELD, oofem::IRRT_OK, K, oofem::MPlasticMaterial2::linearElasticMaterial, newtonIter, omegaCrit, sigT, tau0, and yieldTol.

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

Returns true if stiffness matrix of receiver is symmetric Default implementation returns true.

Reimplemented from oofem::MPlasticMaterial2.

Definition at line 113 of file druckerpragercutmat.h.

Member Data Documentation

double oofem::DruckerPragerCutMat::a
protected

Parameter for damage computation from cumulative plastic strain.

Definition at line 100 of file druckerpragercutmat.h.

Referenced by DruckerPragerCutMat(), and initializeFrom().

double oofem::DruckerPragerCutMat::alpha
protected

Friction coefficient.

Definition at line 85 of file druckerpragercutmat.h.

Referenced by computeYieldValueAt(), and initializeFrom().

double oofem::DruckerPragerCutMat::alphaPsi
protected

Dilatancy coefficient (allowing non-associated plasticity).

Definition at line 88 of file druckerpragercutmat.h.

Referenced by computeReducedHardeningVarsLamGradient(), computeStrainHardeningVarsIncrement(), computeStressGradientVector(), and initializeFrom().

double oofem::DruckerPragerCutMat::G
protected

Elastic shear modulus.

Definition at line 70 of file druckerpragercutmat.h.

Referenced by DruckerPragerCutMat(), and initializeFrom().

double oofem::DruckerPragerCutMat::H
protected

Hardening modulus.

Definition at line 76 of file druckerpragercutmat.h.

Referenced by computeKGradientVector(), computeYieldValueAt(), DruckerPragerCutMat(), and initializeFrom().

double oofem::DruckerPragerCutMat::K
protected

Elastic bulk modulus.

Definition at line 73 of file druckerpragercutmat.h.

Referenced by DruckerPragerCutMat(), and initializeFrom().

int oofem::DruckerPragerCutMat::newtonIter
protected

Maximum number of iterations in lambda search.

Definition at line 94 of file druckerpragercutmat.h.

Referenced by DruckerPragerCutMat(), and initializeFrom().

double oofem::DruckerPragerCutMat::omegaCrit
protected

Maximum damage value.

Definition at line 97 of file druckerpragercutmat.h.

Referenced by DruckerPragerCutMat(), and initializeFrom().

double oofem::DruckerPragerCutMat::sigT
protected

Uniaxial tensile strength for cut-off.

Definition at line 79 of file druckerpragercutmat.h.

Referenced by computeYieldValueAt(), DruckerPragerCutMat(), and initializeFrom().

double oofem::DruckerPragerCutMat::tau0
protected

Initial yield stress under pure shear.

Definition at line 82 of file druckerpragercutmat.h.

Referenced by computeYieldValueAt(), and initializeFrom().

double oofem::DruckerPragerCutMat::yieldTol
protected

Tolerance of the error in the yield criterion.

Definition at line 91 of file druckerpragercutmat.h.

Referenced by DruckerPragerCutMat(), and initializeFrom().


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

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