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

Prescribes $ v_i = d_{ij}(x_j-\bar{x}_j) $ or $ s = d_{1j}(x_j - \bar{x}_j) $ where $ v_i $ are primary unknowns for the subscale. More...

#include <prescribedgradient.h>

+ Inheritance diagram for oofem::PrescribedGradient:
+ Collaboration diagram for oofem::PrescribedGradient:

Public Member Functions

 PrescribedGradient (int n, Domain *d)
 Creates boundary condition with given number, belonging to given domain. More...
 
virtual ~PrescribedGradient ()
 Destructor. More...
 
virtual double give (Dof *dof, ValueModeType mode, double time)
 
virtual bcType giveType () 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...
 
void updateCoefficientMatrix (FloatMatrix &C)
 Constructs a coefficient matrix for all prescribed unknowns. More...
 
virtual void computeField (FloatArray &sigma, TimeStep *tStep)
 Computes the homogenized, macroscopic, field (stress). More...
 
virtual void computeTangent (FloatMatrix &tangent, TimeStep *tStep)
 Computes the macroscopic tangent for homogenization problems through sensitivity analysis. More...
 
virtual void scale (double s)
 Scales the receiver according to given value. More...
 
virtual const char * giveClassName () const
 
virtual const char * giveInputRecordName () const
 
- Public Member Functions inherited from oofem::BoundaryCondition
 BoundaryCondition (int i, Domain *d)
 Constructor. More...
 
virtual ~BoundaryCondition ()
 Destructor. More...
 
virtual double give (Dof *dof, ValueModeType mode, TimeStep *tStep)
 Returns the value of a prescribed unknown, respecting requested mode for given time. More...
 
void setPrescribedValue (double s)
 Set prescribed value at the input record string of receiver. 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...
 
- Public Member Functions inherited from oofem::GeneralBoundaryCondition
 GeneralBoundaryCondition (int n, Domain *d)
 Constructor. More...
 
virtual ~GeneralBoundaryCondition ()
 Destructor. More...
 
int giveSetNumber ()
 Gives the set number which boundary condition is applied to. More...
 
virtual int giveNumberOfInternalDofManagers ()
 Gives the number of internal dof managers. More...
 
virtual DofManagergiveInternalDofManager (int i)
 Gives an internal dof manager from receiver. More...
 
FunctiongiveTimeFunction ()
 
virtual bcValType giveBCValType () const
 Returns receiver load type. More...
 
virtual bool isImposed (TimeStep *tStep)
 Returns nonzero if receiver representing BC is imposed at given time, otherwise returns zero. More...
 
virtual const IntArraygiveDofIDs () const
 Array with default dofs which b.c. More...
 
virtual bcGeomType giveBCGeoType () const
 Returns geometry character of boundary condition. More...
 
virtual void postInitialize ()
 Performs post initialization steps. 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 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 void printYourself ()
 Prints receiver state on stdout. Useful for debugging. 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...
 
- Public Member Functions inherited from oofem::PrescribedGradientHomogenization
 PrescribedGradientHomogenization ()
 
virtual ~PrescribedGradientHomogenization ()
 
virtual double domainSize ()
 
void setPrescribedGradient (const FloatMatrix &t)
 Set prescribed gradient. More...
 
void setPrescribedGradientVoigt (const FloatArray &t)
 Sets the prescribed gradient from the matrix from given voigt notation. More...
 
void giveGradientVoigt (FloatArray &oGradient) const
 Gives back the applied gradient in Voigt form. More...
 
void setCenterCoordinate (FloatArray &x)
 Set the center coordinate for the prescribed values to be set for. More...
 
FloatArraygiveCenterCoordinate ()
 Returns the center coordinate. More...
 

Additional Inherited Members

- Protected Member Functions inherited from oofem::PrescribedGradientHomogenization
virtual double domainSize (Domain *d, int set)
 
- Protected Attributes inherited from oofem::BoundaryCondition
FloatArray values
 Prescribed values for each resp. dof. More...
 
- Protected Attributes inherited from oofem::GeneralBoundaryCondition
int timeFunction
 Associated load time function. More...
 
bcValType valType
 Physical meaning of BC value. More...
 
IntArray dofs
 Dofs that b.c. is applied to (relevant for Dirichlet type b.c.s). More...
 
int isImposedTimeFunction
 Zero by default - the BC is than always imposed. More...
 
int set
 Set number for boundary condition to be applied to. 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...
 
- Protected Attributes inherited from oofem::PrescribedGradientHomogenization
FloatMatrix mGradient
 Prescribed gradient $ d_{ij} $. More...
 
FloatArray mCenterCoord
 Center coordinate $ \bar{x}_i $. More...
 

Detailed Description

Prescribes $ v_i = d_{ij}(x_j-\bar{x}_j) $ or $ s = d_{1j}(x_j - \bar{x}_j) $ where $ v_i $ are primary unknowns for the subscale.

This is typical boundary condition in multiscale analysis where $ d = \partial_x s$ would a macroscopic gradient at the integration point, i.e. this is a boundary condition for prolongation. It is also convenient to use when one wants to test a arbitrary specimen for shear.

Author
Mikael Öhman
Erik Svenning

Definition at line 61 of file prescribedgradient.h.

Constructor & Destructor Documentation

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

Creates boundary condition with given number, belonging to given domain.

Parameters
nBoundary condition number.
dDomain to which new object will belongs.

Definition at line 69 of file prescribedgradient.h.

virtual oofem::PrescribedGradient::~PrescribedGradient ( )
inlinevirtual

Destructor.

Definition at line 72 of file prescribedgradient.h.

Member Function Documentation

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

Reimplemented from oofem::BoundaryCondition.

Definition at line 113 of file prescribedgradient.h.

void oofem::PrescribedGradient::giveInputRecord ( DynamicInputRecord input)
virtual

Setups the input record string of receiver.

Parameters
inputDynamic input record to be filled by receiver.

Reimplemented from oofem::BoundaryCondition.

Definition at line 245 of file prescribedgradient.C.

References oofem::PrescribedGradientHomogenization::giveInputRecord(), and oofem::GeneralBoundaryCondition::giveInputRecord().

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

Reimplemented from oofem::BoundaryCondition.

Definition at line 114 of file prescribedgradient.h.

References _IFT_PrescribedGradient_Name.

virtual bcType oofem::PrescribedGradient::giveType ( ) const
inlinevirtual
Returns
Type of boundary condition. It allows to distinguish BC according its mathematical meaning, ie. like Dirichlet, Neumann, or Newton type.

Reimplemented from oofem::BoundaryCondition.

Definition at line 76 of file prescribedgradient.h.

References oofem::DirichletBT.

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

Initializes receiver according to object description stored in input record.

The input record contains two fields;

  • gradient #rows #columns { d_11 d_12 ... ; d_21 ... } (required)
  • cCoords #columns x_1 x_2 ... (optional, default 0) The prescribed tensor's columns must be equal to the size of the center coordinates. The size of the center coordinates must be equal to the size of the coordinates in the applied nodes.

Reimplemented from oofem::BoundaryCondition.

Definition at line 238 of file prescribedgradient.C.

References oofem::PrescribedGradientHomogenization::initializeFrom(), and oofem::GeneralBoundaryCondition::initializeFrom().

virtual void oofem::PrescribedGradient::scale ( double  s)
inlinevirtual

Scales the receiver according to given value.

Typically used in nondimensional analysis to scale down BCs and ICs.

Parameters
sScale factor.

Reimplemented from oofem::BoundaryCondition.

Definition at line 111 of file prescribedgradient.h.

void oofem::PrescribedGradient::updateCoefficientMatrix ( FloatMatrix C)

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
Generated at Tue Jan 2 2018 20:07:39 for OOFEM by doxygen 1.8.11 written by Dimitri van Heesch, © 1997-2011