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

This class implements Incremental LinearStatic Engineering problem. More...

#include <incrementallinearstatic.h>

+ Inheritance diagram for oofem::IncrementalLinearStatic:
+ Collaboration diagram for oofem::IncrementalLinearStatic:

Public Member Functions

 IncrementalLinearStatic (int i, EngngModel *_master=NULL)
 
virtual ~IncrementalLinearStatic ()
 
virtual IRResultType initializeFrom (InputRecord *ir)
 Initializes receiver according to object description in input reader. More...
 
virtual void solveYourself ()
 Starts solution process. More...
 
virtual void solveYourselfAt (TimeStep *tStep)
 Solves problem for given time step. More...
 
virtual double giveUnknownComponent (ValueModeType mode, TimeStep *tStep, Domain *d, Dof *dof)
 Returns requested unknown. More...
 
virtual contextIOResultType saveContext (DataStream &stream, ContextMode mode)
 Stores the state of model to output stream. More...
 
virtual contextIOResultType restoreContext (DataStream &stream, ContextMode mode)
 Restores the state of model from output stream. More...
 
virtual TimeStepgiveNextStep ()
 Returns next time step (next to current step) of receiver. More...
 
double giveDiscreteTime (int iStep)
 This function returns time valid for iStep time step, used in integration of structure response. More...
 
virtual double giveEndOfTimeOfInterest ()
 Returns end of time interest (time corresponding to end of time integration). More...
 
virtual NumericalMethodgiveNumericalMethod (MetaStep *mStep)
 Returns reference to receiver's numerical method. More...
 
virtual fMode giveFormulation ()
 Indicates type of non linear computation (total or updated formulation). More...
 
virtual const char * giveInputRecordName () const
 
virtual const char * giveClassName () const
 Returns class name of the receiver. More...
 
virtual int requiresUnknownsDictionaryUpdate ()
 Indicates if EngngModel requires Dofs dictionaries to be updated. More...
 
virtual bool requiresEquationRenumbering (TimeStep *)
 Returns true if equation renumbering is required for given solution step. More...
 
virtual void updateDofUnknownsDictionary (DofManager *, TimeStep *)
 Updates necessary values in Dofs unknown dictionaries. More...
 
virtual int giveUnknownDictHashIndx (ValueModeType mode, TimeStep *tStep)
 This method is responsible for computing unique dictionary id (ie hash value) from given valueModeType and time step. More...
 
- Public Member Functions inherited from oofem::StructuralEngngModel
 StructuralEngngModel (int i, EngngModel *_master=NULL)
 Creates new StructuralEngngModel with number i, associated to domain d. More...
 
virtual ~StructuralEngngModel ()
 Destructor. More...
 
virtual void updateYourself (TimeStep *tStep)
 Updates internal state after finishing time step. More...
 
virtual int checkConsistency ()
 Allows programmer to test some receiver's internal data, before computation begins. More...
 
void computeReaction (FloatArray &answer, TimeStep *tStep, int di)
 Computes reaction forces. More...
 
virtual void terminate (TimeStep *tStep)
 Terminates the solution of time step. More...
 
void buildReactionTable (IntArray &restrDofMans, IntArray &restrDofs, IntArray &eqn, TimeStep *tStep, int di)
 Builds the reaction force table. More...
 
virtual void showSparseMtrxStructure (int type, oofegGraphicContext &gc, TimeStep *tStep)
 Shows the sparse structure of required matrix, type == 1 stiffness. More...
 
- Public Member Functions inherited from oofem::EngngModel
 EngngModel (int i, EngngModel *_master=NULL)
 Constructor. More...
 
virtual ~EngngModel ()
 Destructor. More...
 
 EngngModel (const EngngModel &)=delete
 
EngngModeloperator= (const EngngModel &)=delete
 
DomaingiveDomain (int n)
 Service for accessing particular problem domain. More...
 
void setDomain (int i, Domain *ptr, bool iDeallocateOld=true)
 Sets i-th domain of receiver. More...
 
int giveNumberOfDomains ()
 Returns number of domains in problem. More...
 
const std::string & giveDescription () const
 
const time_t & giveStartTime ()
 
bool giveSuppressOutput () const
 
virtual ErrorEstimatorgiveDomainErrorEstimator (int n)
 Service for accessing ErrorEstimator corresponding to particular domain. More...
 
virtual MaterialInterfacegiveMaterialInterface (int n)
 Returns material interface representation for given domain. More...
 
void setNumberOfEquations (int id, int neq)
 
FILE * giveOutputStream ()
 Returns file descriptor of output file. More...
 
std::string giveOutputBaseFileName ()
 Returns base output file name to which extensions, like .out .vtu .osf should be added. More...
 
std::string giveReferenceFileName ()
 Returns reference file name. More...
 
void letOutputBaseFileNameBe (const std::string &src)
 Sets the base output file name. More...
 
ContextOutputMode giveContextOutputMode ()
 Returns domain context output mode. More...
 
int giveContextOutputStep ()
 Returns domain context output step. More...
 
void setContextOutputMode (ContextOutputMode contextMode)
 Sets context output mode of receiver. More...
 
void setUDContextOutputMode (int cStep)
 Sets user defined context output mode (it sets contextOutputMode to contextOutputMode), setting contextOutputStep to given value. More...
 
void setProblemMode (problemMode pmode)
 Sets domain mode to given mode. More...
 
void setParallelMode (bool newParallelFlag)
 Sets the problem to run in parallel (or not). More...
 
problemMode giveProblemMode ()
 Returns domain mode. More...
 
void setProblemScale (problemScale pscale)
 Sets scale in multiscale simulation. More...
 
problemScale giveProblemScale ()
 Returns scale in multiscale simulation. More...
 
virtual void setRenumberFlag ()
 Sets the renumber flag to true. More...
 
virtual void resetRenumberFlag ()
 Sets the renumber flag to false. More...
 
double giveSolutionStepTime ()
 Returns the user time of the current simulation step in seconds. More...
 
void giveAnalysisTime (int &rhrs, int &rmin, int &rsec, int &uhrs, int &umin, int &usec)
 Returns the real and user time for the analysis. More...
 
void terminateAnalysis ()
 Performs analysis termination after finishing analysis. More...
 
virtual void doStepOutput (TimeStep *tStep)
 Prints the ouput of the solution step (using virtual this->printOutputAtservice) to the stream detemined using this->giveOutputStream() method and calls exportModuleManager to do output. More...
 
void saveStepContext (TimeStep *tStep, ContextMode mode)
 Saves context of given solution step, if required (determined using this->giveContextOutputMode() method). More...
 
virtual void initializeYourself (TimeStep *tStep)
 Provides the opportunity to initialize state variables stored in element integration points according to initial conditions using function initializeYourself() on element level. More...
 
virtual int initializeAdaptive (int tStepNumber)
 Initializes the newly generated discretization state according to previous solution. More...
 
virtual int giveNumberOfDomainEquations (int di, const UnknownNumberingScheme &num)
 Returns number of equations for given domain in active (current time step) time step. More...
 
virtual FieldPtr giveField (FieldType key, TimeStep *)
 Returns the smart pointer to requested field, Null otherwise. More...
 
EngngModelgiveMasterEngngModel ()
 Returns the master engnmodel. More...
 
virtual double giveLoadLevel ()
 Returns the current load level. More...
 
virtual double giveEigenValue (int eigNum)
 Only relevant for eigen value analysis. Otherwise returns zero. More...
 
virtual void setActiveVector (int i)
 Only relevant for eigen value analysis. Otherwise does noting. More...
 
int updateSharedDofManagers (FloatArray &answer, const UnknownNumberingScheme &s, int ExchangeTag)
 Exchanges necessary remote DofManagers data. More...
 
int exchangeRemoteElementData (int ExchangeTag)
 Exchanges necessary remote element data with remote partitions. More...
 
virtual int giveCurrentNumberOfIterations ()
 Returns number of iterations that was required to reach equilibrium - used for adaptive step length in staggered problem. More...
 
MPI_Comm giveParallelComm ()
 Returns the communication object of reciever. More...
 
int packRemoteElementData (ProcessCommunicator &processComm)
 Packs data of local element to be received by their remote counterpart on remote partitions. More...
 
int unpackRemoteElementData (ProcessCommunicator &processComm)
 Unpacks data for remote elements (which are mirrors of remote partition's local elements). More...
 
int packDofManagers (ArrayWithNumbering *src, ProcessCommunicator &processComm)
 Packing function for vector values of DofManagers. More...
 
int unpackDofManagers (ArrayWithNumbering *dest, ProcessCommunicator &processComm)
 Unpacking function for vector values of DofManagers . More...
 
ProblemCommunicatorgiveProblemCommunicator (EngngModelCommType t)
 
void initializeCommMaps (bool forceInit=false)
 
virtual int instanciateYourself (DataReader &dr, InputRecord *ir, const char *outFileName, const char *desc)
 Initializes whole problem according to its description stored in inputStream. More...
 
void Instanciate_init ()
 Initialization of the receiver state (opening the default output stream, empty domain creation, initialization of parallel context, etc) before Initialization form DataReader. More...
 
int instanciateDomains (DataReader &dr)
 Instanciate problem domains by calling their instanciateYourself() service. More...
 
int instanciateMetaSteps (DataReader &dr)
 Instanciate problem meta steps by calling their instanciateYourself() service. More...
 
virtual int instanciateDefaultMetaStep (InputRecord *ir)
 Instanciate default metastep, if nmsteps is zero. More...
 
virtual void updateAttributes (MetaStep *mStep)
 Update receiver attributes according to step metaStep attributes. More...
 
void initMetaStepAttributes (MetaStep *mStep)
 Update e-model attributes attributes according to step metaStep attributes. More...
 
virtual void updateDomainLinks ()
 Updates domain links after the domains of receiver have changed. More...
 
MetaStepgiveCurrentMetaStep ()
 Returns current meta step. More...
 
virtual TimeStepgiveCurrentStep (bool force=false)
 Returns current time step. More...
 
virtual TimeStepgivePreviousStep (bool force=false)
 Returns previous time step. More...
 
TimeStepgenerateNextStep ()
 Generate new time step (and associate metastep). More...
 
virtual void preInitializeNextStep ()
 Does a pre-initialization of the next time step (implement if necessarry) More...
 
virtual TimeStepgiveSolutionStepWhenIcApply (bool force=false)
 Returns the solution step when Initial Conditions (IC) apply. More...
 
virtual int giveNumberOfFirstStep (bool force=false)
 Returns number of first time step used by receiver. More...
 
int giveNumberOfMetaSteps ()
 Return number of meta steps. More...
 
MetaStepgiveMetaStep (int i)
 Returns the i-th meta step. More...
 
int giveNumberOfSteps (bool force=false)
 Returns total number of steps. More...
 
int giveNumberOfTimeStepWhenIcApply ()
 Returns the time step number, when initial conditions should apply. More...
 
ExportModuleManagergiveExportModuleManager ()
 Returns receiver's export module manager. More...
 
EngngModelTimergiveTimer ()
 Returns reference to receiver timer (EngngModelTimer). More...
 
virtual int giveNewEquationNumber (int domain, DofIDItem)
 Increases number of equations of receiver's domain and returns newly created equation number. More...
 
virtual int giveNewPrescribedEquationNumber (int domain, DofIDItem)
 Increases number of prescribed equations of receiver's domain and returns newly created equation number. More...
 
std::string giveContextFileName (int tStepNumber, int stepVersion) const
 Returns the filename for the context file for the given step and version. More...
 
std::string giveDomainFileName (int domainNum, int domainSerNum) const
 Returns the filename for the given domain (used by adaptivity and restore) More...
 
virtual void updateComponent (TimeStep *tStep, NumericalCmpn cmpn, Domain *d)
 Updates components mapped to numerical method if necessary during solution process. More...
 
virtual void initStepIncrements ()
 Initializes solution of new time step. More...
 
virtual int forceEquationNumbering (int i)
 Forces equation renumbering on given domain. More...
 
virtual int forceEquationNumbering ()
 Forces equation renumbering on all domains associated to engng model. More...
 
virtual ParallelContextgiveParallelContext (int n)
 Returns the parallel context corresponding to given domain (n) and unknown type Default implementation returns i-th context from parallelContextList. More...
 
virtual void initParallelContexts ()
 Creates parallel contexts. More...
 
virtual void assemble (SparseMtrx &answer, TimeStep *tStep, const MatrixAssembler &ma, const UnknownNumberingScheme &s, Domain *domain)
 Assembles characteristic matrix of required type into given sparse matrix. More...
 
virtual void assemble (SparseMtrx &answer, TimeStep *tStep, const MatrixAssembler &ma, const UnknownNumberingScheme &r_s, const UnknownNumberingScheme &c_s, Domain *domain)
 Assembles characteristic matrix of required type into given sparse matrix. More...
 
void assembleVector (FloatArray &answer, TimeStep *tStep, const VectorAssembler &va, ValueModeType mode, const UnknownNumberingScheme &s, Domain *domain, FloatArray *eNorms=NULL)
 Assembles characteristic vector of required type from dofManagers, element, and active boundary conditions, into given vector. More...
 
void assembleVectorFromDofManagers (FloatArray &answer, TimeStep *tStep, const VectorAssembler &va, ValueModeType mode, const UnknownNumberingScheme &s, Domain *domain, FloatArray *eNorms=NULL)
 Assembles characteristic vector of required type from dofManagers into given vector. More...
 
void assembleVectorFromElements (FloatArray &answer, TimeStep *tStep, const VectorAssembler &va, ValueModeType mode, const UnknownNumberingScheme &s, Domain *domain, FloatArray *eNorms=NULL)
 Assembles characteristic vector of required type from elements into given vector. More...
 
void assembleVectorFromBC (FloatArray &answer, TimeStep *tStep, const VectorAssembler &va, ValueModeType mode, const UnknownNumberingScheme &s, Domain *domain, FloatArray *eNorms=NULL)
 Assembles characteristic vector of required type from boundary conditions. More...
 
void assembleExtrapolatedForces (FloatArray &answer, TimeStep *tStep, CharType type, Domain *domain)
 Assembles the extrapolated internal forces vector, useful for obtaining a good initial guess in nonlinear analysis with Dirichlet boundary conditions. More...
 
void assemblePrescribedExtrapolatedForces (FloatArray &answer, TimeStep *tStep, CharType type, Domain *domain)
 
void assembleVectorFromContacts (FloatArray &answer, TimeStep *tStep, CharType type, ValueModeType mode, const UnknownNumberingScheme &s, Domain *domain, FloatArray *eNorms=NULL)
 
virtual int checkProblemConsistency ()
 Allows programmer to test problem its internal data, before computation begins. More...
 
virtual void init ()
 Initializes the receiver state. More...
 
virtual void postInitialize ()
 Performs post-initialization for all the problem contents (which is called after initializeFrom). More...
 
virtual void printOutputAt (FILE *file, TimeStep *tStep, const IntArray &nodeSets, const IntArray &elementSets)
 
void outputNodes (FILE *file, Domain &domain, TimeStep *tStep, int setNum)
 Outputs all nodes in the given set. More...
 
void outputElements (FILE *file, Domain &domain, TimeStep *tStep, int setNum)
 Outputs all elements in the given set. More...
 
void printYourself ()
 Prints state of receiver. Useful for debugging. More...
 
virtual void printDofOutputAt (FILE *stream, Dof *iDof, TimeStep *tStep)
 DOF printing routine. More...
 
virtual int useNonlocalStiffnessOption ()
 Returns nonzero if nonlocal stiffness option activated. More...
 
bool isParallel () const
 Returns true if receiver in parallel mode. More...
 
int giveRank () const
 Returns domain rank in a group of collaborating processes (0..groupSize-1) More...
 
int giveNumberOfProcesses () const
 Returns the number of collaborating processes. More...
 
EngngModelContextgiveContext ()
 Context requesting service. More...
 
virtual int giveNumberOfSlaveProblems ()
 Returns number of slave problems. More...
 
virtual EngngModelgiveSlaveProblem (int i)
 Returns i-th slave problem. More...
 
virtual bool giveEquationScalingFlag ()
 Returns the Equation scaling flag, which is used to indicate that governing equation(s) are scaled, or non-dimensionalized. More...
 
virtual double giveVariableScale (VarScaleType varId)
 Returns the scale factor for given variable type. More...
 
virtual int estimateMaxPackSize (IntArray &commMap, DataStream &buff, int packUnpackType)
 Determines the space necessary for send/receive buffer. More...
 
virtual void balanceLoad (TimeStep *tStep)
 Recovers the load balance between processors, if needed. More...
 
virtual LoadBalancergiveLoadBalancer ()
 Returns reference to receiver's load balancer. More...
 
virtual LoadBalancerMonitorgiveLoadBalancerMonitor ()
 Returns reference to receiver's load balancer monitor. More...
 
void initParallel ()
 Request domain rank and problem size. More...
 
EngngModelgiveEngngModel ()
 Returns reference to itself -> required by communicator.h. More...
 
virtual bool isElementActivated (int elemNum)
 
virtual bool isElementActivated (Element *e)
 
virtual void drawYourself (oofegGraphicContext &gc)
 
virtual void drawElements (oofegGraphicContext &gc)
 
virtual void drawNodes (oofegGraphicContext &gc)
 
std::string errorInfo (const char *func) const
 Returns string for prepending output (used by error reporting macros). More...
 

Protected Attributes

std::unique_ptr< SparseMtrxstiffnessMatrix
 
FloatArray loadVector
 
FloatArray internalLoadVector
 
FloatArray incrementOfDisplacementVector
 
FloatArray discreteTimes
 
bool fixedSteps
 
double deltaT
 
double endOfTimeOfInterest
 
std::unique_ptr< SparseLinearSystemNMnMethod
 Numerical method used to solve the problem. More...
 
LinSystSolverType solverType
 
SparseMtrxType sparseMtrxType
 
- Protected Attributes inherited from oofem::StructuralEngngModel
StateCounterType internalVarUpdateStamp
 Contains last time stamp of internal variable update. More...
 
FloatArray internalForcesEBENorm
 Norm of nodal internal forces evaluated on element by element basis (squared) More...
 
- Protected Attributes inherited from oofem::EngngModel
int ndomains
 Number of receiver domains. More...
 
std::vector< std::unique_ptr< Domain > > domainList
 List of problem domains. More...
 
int numberOfSteps
 Total number of time steps. More...
 
int numberOfEquations
 Total number of equation in current time step. More...
 
int numberOfPrescribedEquations
 Total number or prescribed equations in current time step. More...
 
IntArray domainNeqs
 Number of equations per domain. More...
 
IntArray domainPrescribedNeqs
 Number of prescribed equations per domain. More...
 
bool renumberFlag
 Renumbering flag (renumbers equations after each step, necessary if Dirichlet BCs change). More...
 
bool profileOpt
 Profile optimized numbering flag (using Sloan's algorithm). More...
 
int equationNumberingCompleted
 Equation numbering completed flag. More...
 
int nMetaSteps
 Number of meta steps. More...
 
std::vector< MetaStepmetaStepList
 List of problem metasteps. More...
 
std::unique_ptr< TimeStepstepWhenIcApply
 Solution step when IC (initial conditions) apply. More...
 
std::unique_ptr< TimeStepcurrentStep
 Current time step. More...
 
std::unique_ptr< TimeSteppreviousStep
 Previous time step. More...
 
int number
 Receivers id. More...
 
std::string dataOutputFileName
 Path to output stream. More...
 
std::string coreOutputFileName
 String with core output file name. More...
 
FILE * outputStream
 Output stream. More...
 
std::string referenceFileName
 String with reference file name. More...
 
ContextOutputMode contextOutputMode
 Domain context output mode. More...
 
int contextOutputStep
 
ExportModuleManagerexportModuleManager
 Export module manager. More...
 
InitModuleManagerinitModuleManager
 Initialization module manager. More...
 
problemMode pMode
 Domain mode. More...
 
problemScale pScale
 Multiscale mode. More...
 
time_t startTime
 Solution start time. More...
 
EngngModelmaster
 Master e-model; if defined receiver is in maintained (slave) mode. More...
 
EngngModelContextcontext
 Context. More...
 
EngngModelTimer timer
 E-model timer. More...
 
int parallelFlag
 Flag indicating that the receiver runs in parallel. More...
 
enum fMode nonLinFormulation
 Type of non linear formulation (total or updated formulation). More...
 
ErrorEstimatordefaultErrEstimator
 Error estimator. Useful for adaptivity, or simply printing errors output. More...
 
int rank
 Domain rank in a group of collaborating processes (0..groupSize-1). More...
 
int numProcs
 Total number of collaborating processes. More...
 
int nonlocalExt
 Flag indicating if nonlocal extension active, which will cause data to be sent between shared elements before computing the internal forces. More...
 
char processor_name [PROCESSOR_NAME_LENGTH]
 Processor name. More...
 
MPI_Comm comm
 Communication object for this engineering model. More...
 
CommunicatorBuffcommBuff
 Common Communicator buffer. More...
 
ProblemCommunicatorcommunicator
 Communicator. More...
 
ProblemCommunicatornonlocCommunicator
 NonLocal Communicator. Necessary when nonlocal constitutive models are used. More...
 
std::vector< ParallelContextparallelContextList
 List where parallel contexts are stored. More...
 
bool suppressOutput
 Flag for suppressing output to file. More...
 
std::string simulationDescription
 
LoadBalancerlb
 Load Balancer. More...
 
LoadBalancerMonitorlbm
 
bool loadBalancingFlag
 If set to true, load balancing is active. More...
 
bool force_load_rebalance_in_first_step
 Debug flag forcing load balancing after first step. More...
 

Additional Inherited Members

- Public Types inherited from oofem::EngngModel
enum  EngngModel_UpdateMode { EngngModel_Unknown_Mode, EngngModel_SUMM_Mode, EngngModel_SET_Mode }
 
enum  EngngModelCommType { PC_default, PC_nonlocal }
 
enum  InitialGuess { IG_None = 0, IG_Tangent = 1 }
 Means to choose methods for finding a good initial guess. More...
 
- Protected Types inherited from oofem::EngngModel
enum  {
  InternalForcesExchangeTag, MassExchangeTag, LoadExchangeTag, ReactionExchangeTag,
  RemoteElementExchangeTag
}
 Message tags. More...
 
- Protected Member Functions inherited from oofem::StructuralEngngModel
void printReactionForces (TimeStep *tStep, int id, FILE *out)
 Computes and prints reaction forces, computed from nodal internal forces. More...
 
virtual void computeExternalLoadReactionContribution (FloatArray &reactions, TimeStep *tStep, int di)
 Computes the contribution external loading to reaction forces in given domain. More...
 
virtual void giveInternalForces (FloatArray &answer, bool normFlag, int di, TimeStep *tStep)
 Evaluates the nodal representation of internal forces by assembling contributions from individual elements. More...
 
void updateInternalState (TimeStep *tStep)
 Updates nodal values (calls also this->updateDofUnknownsDictionary for updating dofs unknowns dictionaries if model supports changes of static system). More...
 
virtual void printOutputAt (FILE *file, TimeStep *tStep)
 Prints output of receiver to output domain stream, for given time step. More...
 
- Protected Member Functions inherited from oofem::EngngModel
virtual void packMigratingData (TimeStep *tStep)
 Packs receiver data when rebalancing load. More...
 
virtual void unpackMigratingData (TimeStep *tStep)
 Unpacks receiver data when rebalancing load. More...
 

Detailed Description

This class implements Incremental LinearStatic Engineering problem.

Problem is solved as series of explicit linear solutions. It will solve any nonlinear problem by writing the expressions explicitly $ K({}^{n-1} r)\cdot \delta r = R({}^{n-1}r) - F $. Explicit solver has requirements on the time step size to obtain a stable solution.

This class can be used for solving linear creep problems.

Supports the changes of static scheme (applying, removing and changing boundary conditions) during the analysis.

Definition at line 66 of file incrementallinearstatic.h.

Constructor & Destructor Documentation

oofem::IncrementalLinearStatic::IncrementalLinearStatic ( int  i,
EngngModel _master = NULL 
)

Definition at line 63 of file incrementallinearstatic.C.

References endOfTimeOfInterest, and oofem::EngngModel::ndomains.

oofem::IncrementalLinearStatic::~IncrementalLinearStatic ( )
virtual

Definition at line 71 of file incrementallinearstatic.C.

Member Function Documentation

virtual const char* oofem::IncrementalLinearStatic::giveClassName ( ) const
inlinevirtual

Returns class name of the receiver.

Implements oofem::EngngModel.

Definition at line 117 of file incrementallinearstatic.h.

double oofem::IncrementalLinearStatic::giveDiscreteTime ( int  iStep)

This function returns time valid for iStep time step, used in integration of structure response.

This functions, when invoked for the first time, generates table of times. Times in this table are generated according to:

  • if there exists some load time function with abrupt change, then time just before and just at abrupt is included in table.
  • between these steps under constant loads (or when load changes continuously) we use progressively increasing time step. They are best chosen so that time step be kept constant in the log (t-t') scale
    Parameters
    iStepTime step number.

Definition at line 137 of file incrementallinearstatic.C.

References oofem::FloatArray::at(), deltaT, discreteTimes, fixedSteps, oofem::FloatArray::giveSize(), and OOFEM_ERROR.

Referenced by giveNextStep(), and solveYourself().

virtual double oofem::IncrementalLinearStatic::giveEndOfTimeOfInterest ( )
inlinevirtual

Returns end of time interest (time corresponding to end of time integration).

Reimplemented from oofem::EngngModel.

Definition at line 110 of file incrementallinearstatic.h.

References endOfTimeOfInterest, and giveNumericalMethod().

virtual fMode oofem::IncrementalLinearStatic::giveFormulation ( )
inlinevirtual

Indicates type of non linear computation (total or updated formulation).

This is used for example on Nodal level to update coordinates if updated formulation is done, or on element level, when non linear contributions are computed.

Reimplemented from oofem::EngngModel.

Definition at line 114 of file incrementallinearstatic.h.

References oofem::TL.

virtual const char* oofem::IncrementalLinearStatic::giveInputRecordName ( ) const
inlinevirtual

Definition at line 116 of file incrementallinearstatic.h.

References _IFT_IncrementalLinearStatic_Name.

TimeStep * oofem::IncrementalLinearStatic::giveNextStep ( )
virtual

Returns next time step (next to current step) of receiver.

Reimplemented from oofem::EngngModel.

Definition at line 152 of file incrementallinearstatic.C.

References oofem::EngngModel::currentStep, giveDiscreteTime(), oofem::EngngModel::giveNumberOfTimeStepWhenIcApply(), and oofem::EngngModel::previousStep.

NumericalMethod * oofem::IncrementalLinearStatic::giveNumericalMethod ( MetaStep mStep)
virtual

Returns reference to receiver's numerical method.

Reimplemented from oofem::EngngModel.

Definition at line 75 of file incrementallinearstatic.C.

References oofem::classFactory, oofem::ClassFactory::createSparseLinSolver(), nMethod, OOFEM_ERROR, and solverType.

Referenced by giveEndOfTimeOfInterest(), and solveYourselfAt().

double oofem::IncrementalLinearStatic::giveUnknownComponent ( ValueModeType  ,
TimeStep ,
Domain ,
Dof  
)
virtual

Returns requested unknown.

Unknown at give time step is characterized by its type and mode and by its equation number. This function is used by Dofs, when they are requested for their associated unknowns.

See also
Dof::giveUnknown

Reimplemented from oofem::EngngModel.

Definition at line 319 of file incrementallinearstatic.C.

References oofem::__ValueModeTypeToString(), giveUnknownDictHashIndx(), oofem::Dof::giveUnknowns(), OOFEM_ERROR, and requiresUnknownsDictionaryUpdate().

int oofem::IncrementalLinearStatic::giveUnknownDictHashIndx ( ValueModeType  mode,
TimeStep tStep 
)
virtual

This method is responsible for computing unique dictionary id (ie hash value) from given valueModeType and time step.

This function is used by particular dofs to access unknown identified by given parameters from its dictionary using computed index. Usually the hash algorithm should produce index that depend on time step relatively to actual one to avoid storage of complete history.

Reimplemented from oofem::EngngModel.

Definition at line 336 of file incrementallinearstatic.C.

References oofem::TimeStep::giveNumber().

Referenced by giveUnknownComponent(), and requiresEquationRenumbering().

virtual bool oofem::IncrementalLinearStatic::requiresEquationRenumbering ( TimeStep tStep)
inlinevirtual

Returns true if equation renumbering is required for given solution step.

This may of course change the number of equation and in general there is no guarantee that for a certain dof the same equation will be assigned. So the use of DOF unknowns dictionaries is generally recommended.

Reimplemented from oofem::EngngModel.

Definition at line 120 of file incrementallinearstatic.h.

References giveUnknownDictHashIndx(), and updateDofUnknownsDictionary().

virtual int oofem::IncrementalLinearStatic::requiresUnknownsDictionaryUpdate ( )
inlinevirtual

Indicates if EngngModel requires Dofs dictionaries to be updated.

If EngngModel does not support changes of static system, the dof forwards the requests for its unknowns to EngngModel, where unknowns are naturally kept. This is possible, because dof equation number is same during whole solution. But when changes of static system are allowed, several problem arise. For example by solving simple incremental static with allowed static changes, the incremental displacement vector of structure can not be added to total displacement vector of structure, because equation numbers may have changed, and one can not simply add these vector to obtain new total displacement vector, because incompatible displacement will be added. To solve this problem, unknown dictionary at dof level has been assumed. Dof then keeps its unknowns in its own private dictionary. After computing increment of solution, engngModel updates for each dof its unknowns in its dictionary (using updateUnknownsDictionary function). For aforementioned example engngModel updates incremental values but also total value by asking dof for previous total value (dof will use its dictionary, does not asks back EngngModel) adds corresponding increment and updates total value in dictionary.

Reimplemented from oofem::EngngModel.

Definition at line 119 of file incrementallinearstatic.h.

Referenced by giveUnknownComponent().

contextIOResultType oofem::IncrementalLinearStatic::restoreContext ( DataStream stream,
ContextMode  mode 
)
virtual

Restores the state of model from output stream.

Restores not only the receiver state, but also same function is invoked for all DofManagers and Elements in associated domain. Note that by restoring element context also contexts of all associated integration points (and material statuses) are restored. Each context is associated with unique time step. Only one context per time step is allowed. Restore context function will restore such context, which is related (through its step number) to time step number and version given in obj parameter. Restoring context will change current time step in order to correspond to newly restored context.

Parameters
streamContext file.
modeDetermines amount of info in stream.
Returns
contextIOResultType.
Exceptions
ContextIOERRexception if error encountered.

Reimplemented from oofem::EngngModel.

Definition at line 380 of file incrementallinearstatic.C.

References oofem::CIO_OK, oofem::EngngModel::restoreContext(), and THROW_CIOERR.

contextIOResultType oofem::IncrementalLinearStatic::saveContext ( DataStream stream,
ContextMode  mode 
)
virtual

Stores the state of model to output stream.

Stores not only the receiver state, but also same function is invoked for all DofManagers and Elements in associated domain. Note that by storing element context also contexts of all associated integration points (and material statuses) are stored.

Parameters
streamContext stream.
modeDetermines amount of info in stream.
Returns
contextIOResultType.
Exceptions
ContextIOERRIf error encountered.

Reimplemented from oofem::EngngModel.

Definition at line 368 of file incrementallinearstatic.C.

References oofem::CIO_OK, oofem::EngngModel::saveContext(), and THROW_CIOERR.

void oofem::IncrementalLinearStatic::solveYourself ( )
virtual

Starts solution process.

Implementation should invoke for each time step solveYourselfAt function with time step as parameter. Time steps are created using giveNextStep function (this will set current time step to newly created, and updates previous step).

Reimplemented from oofem::EngngModel.

Definition at line 164 of file incrementallinearstatic.C.

References giveDiscreteTime(), and oofem::EngngModel::solveYourself().

void oofem::IncrementalLinearStatic::solveYourselfAt ( TimeStep tStep)
virtual

Solves problem for given time step.

Should assemble characteristic matrices and vectors if necessary and solve problem using appropriate numerical method. After finishing solution, this->updateYourself function for updating solution state and then this->terminate function (for updating nodal and element values) should be called.

Todo:
This will eventually not be optional.

Reimplemented from oofem::EngngModel.

Definition at line 170 of file incrementallinearstatic.C.

References oofem::EngngModel::assemble(), oofem::EngngModel::assembleVector(), oofem::IntArray::at(), oofem::classFactory, oofem::ClassFactory::createSparseMtrx(), oofem::EngngModel::forceEquationNumbering(), oofem::Domain::giveBc(), oofem::Domain::giveBcs(), oofem::EngngModel::giveCurrentMetaStep(), oofem::GeneralBoundaryCondition::giveDofIDs(), oofem::Domain::giveDofManager(), oofem::Domain::giveDofManagers(), oofem::DofManager::giveDofWithID(), oofem::EngngModel::giveDomain(), oofem::GeneralBoundaryCondition::giveInternalDofManager(), oofem::TimeStep::giveNumber(), oofem::Domain::giveNumberOfBoundaryConditions(), oofem::Domain::giveNumberOfDofManagers(), oofem::EngngModel::giveNumberOfDomainEquations(), oofem::GeneralBoundaryCondition::giveNumberOfInternalDofManagers(), giveNumericalMethod(), oofem::TimeStep::givePreviousStep(), oofem::Domain::giveSet(), oofem::GeneralBoundaryCondition::giveSetNumber(), oofem::IntArray::giveSize(), oofem::TimeStep::giveTargetTime(), incrementOfDisplacementVector, internalLoadVector, oofem::GeneralBoundaryCondition::isImposed(), oofem::TimeStep::isTheFirstStep(), loadVector, NM_Success, nMethod, OOFEM_ERROR, OOFEM_LOG_INFO, OOFEM_LOG_RELEVANT, OOFEM_WARNING, oofem::EngngModel::ReactionExchangeTag, oofem::ActiveBoundaryCondition::requiresActiveDofs(), oofem::FloatArray::resize(), oofem::Dof::setBcId(), sparseMtrxType, stiffnessMatrix, oofem::FloatArray::subtract(), oofem::EngngModel::updateSharedDofManagers(), and oofem::FloatArray::zero().

void oofem::IncrementalLinearStatic::updateDofUnknownsDictionary ( DofManager ,
TimeStep  
)
virtual

Member Data Documentation

double oofem::IncrementalLinearStatic::deltaT
protected

Definition at line 75 of file incrementallinearstatic.h.

Referenced by giveDiscreteTime(), and initializeFrom().

FloatArray oofem::IncrementalLinearStatic::discreteTimes
protected

Definition at line 73 of file incrementallinearstatic.h.

Referenced by giveDiscreteTime(), and initializeFrom().

double oofem::IncrementalLinearStatic::endOfTimeOfInterest
protected
bool oofem::IncrementalLinearStatic::fixedSteps
protected

Definition at line 74 of file incrementallinearstatic.h.

Referenced by giveDiscreteTime(), and initializeFrom().

FloatArray oofem::IncrementalLinearStatic::incrementOfDisplacementVector
protected

Definition at line 72 of file incrementallinearstatic.h.

Referenced by solveYourselfAt(), and updateDofUnknownsDictionary().

FloatArray oofem::IncrementalLinearStatic::internalLoadVector
protected

Definition at line 71 of file incrementallinearstatic.h.

Referenced by solveYourselfAt().

FloatArray oofem::IncrementalLinearStatic::loadVector
protected

Definition at line 70 of file incrementallinearstatic.h.

Referenced by solveYourselfAt().

std :: unique_ptr< SparseLinearSystemNM > oofem::IncrementalLinearStatic::nMethod
protected

Numerical method used to solve the problem.

Definition at line 78 of file incrementallinearstatic.h.

Referenced by giveNumericalMethod(), and solveYourselfAt().

LinSystSolverType oofem::IncrementalLinearStatic::solverType
protected

Definition at line 80 of file incrementallinearstatic.h.

Referenced by giveNumericalMethod(), and initializeFrom().

SparseMtrxType oofem::IncrementalLinearStatic::sparseMtrxType
protected

Definition at line 81 of file incrementallinearstatic.h.

Referenced by initializeFrom(), and solveYourselfAt().

std :: unique_ptr< SparseMtrx > oofem::IncrementalLinearStatic::stiffnessMatrix
protected

Definition at line 69 of file incrementallinearstatic.h.

Referenced by solveYourselfAt().


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

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