Rayleigh damping factors. More...

#include <RayleighDampingFactors.h>

Inheritance diagram for XC::RayleighDampingFactors:

Collaboration diagram for XC::RayleighDampingFactors:

Public Member Functions
	RayleighDampingFactors (void)
	Constructor.

	RayleighDampingFactors (const double &alphaM, const double &betaK, const double &betaK0, const double &betaKc)
	Constructor. More...

	RayleighDampingFactors (const Vector &)
	constructor

const double &	getAlphaM (void) const
	return the damping factor applied to elements or nodes mass matrix

void	setAlphaM (const double &d)
	set the damping factor applied to elements or nodes mass matrix

const double &	getBetaK (void) const
	return the damping factor applied to elements current stiffness matrix

void	setBetaK (const double &d)
	set the damping factor applied to elements current stiffness matrix

const double &	getBetaK0 (void) const
	return the damping factor applied to elements initial stiffness matrix

void	setBetaK0 (const double &d)
	set the damping factor applied to elements initial stiffness matrix

const double &	getBetaKc (void) const
	return the damping factor applied to elements committed stiffness matrix

void	setBetaKc (const double &d)
	set the damping factor applied to elements committed stiffness matrix

bool	nullValues (void) const
	Returns true if all Rayleigh factors are zero.

bool	nullKValues (void) const
	Returns true if all Rayleigh stiffness factors are zero.

int	updateParameter (int parameterID, Information &info)
	Update the value of a parameter.

double	getCurrentDampingRatio (const double &) const
	Return the current damping value for the natural frequency argument (alphaM/(2w)+betaKw/2.

double	getInitialDampingRatio (const double &) const
	Return the initial damping value for the natural frequency argument (alphaM/(2w)+betaKw/2.

double	getCommitedDampingRatio (const double &) const
	Return the commited damping value for the natural frequency argument (alphaM/(2w)+betaKw/2.

int	sendSelf (Communicator &)
	Sends object through the communicator argument.

int	recvSelf (const Communicator &)
	Receives object through the communicator argument.

boost::python::dict	getPyDict (void) const
	Return a Python dictionary with the object members values.

void	setPyDict (const boost::python::dict &)
	Set the values of the object members from a Python dictionary.

void	Print (std::ostream &s, int flag=0) const
	Print Rayleigh factors values.

Public Member Functions inherited from CommandEntity
	CommandEntity (CommandEntity *owr=nullptr)
	Default constructor.

CommandEntity *	Owner (void)
	Return a pointer to the object owner.

const CommandEntity *	Owner (void) const
	Return un puntero al objeto propietario de ESTE.

const StandardOutputWrapper &	getStandardOutputWrapper (void) const
	Return the regular output stream wrapper.

StandardOutputWrapper &	getStandardOutputWrapper (void)
	Return the regular output stream wrapper.

const std::string &	getLogFileName (void) const
	Returns log file name.

void	setLogFileName (const std::string &)
	Sets log file name.

const std::string &	getErrFileName (void) const
	Returns err file name.

void	setErrFileName (const std::string &)
	Sets error file name.

const std::string &	getOutputFileName (void) const
	Returns regular output file name.

void	setOutputFileName (const std::string &)
	Sets regular output file name.

boost::python::object	evalPy (boost::python::object dict, const std::string &)
	Return the Python object that results from evaluating the argument.

boost::python::object	execPy (boost::python::object dict, const std::string &)
	Return the Python objects that results from executing the code in the string argument.

boost::python::object	execFilePy (boost::python::object dict, const std::string &)
	Return the Python object that results from executing the code in the file.

Public Member Functions inherited from EntityWithProperties
	EntityWithProperties (EntityWithProperties *owr=nullptr)
	Default constructor.

void	clearPyProps (void)
	Clear python properties map.

bool	hasPyProp (const std::string &)
	Returns true if property exists.

boost::python::object	getPyProp (const std::string &str)
	Return the Python object with the name being passed as parameter.

void	setPyProp (std::string str, boost::python::object val)
	Sets/appends a value tho the Python object's dictionary.

void	copyPropsFrom (const EntityWithProperties &)
	Copy the properties from the argument.

boost::python::list	getPropNames (void) const
	Return the names of the object properties weightings.

const PythonDict &	getPropertiesDict (void) const
	Return a std::map container with the properties of the object.

boost::python::dict	getPyDict (void) const
	Return a Python dictionary containing the object members values.

void	setPyDict (const boost::python::dict &)
	Set the values of the object members from a Python dictionary.

Public Member Functions inherited from EntityWithOwner
	EntityWithOwner (EntityWithOwner *owr=nullptr)
	Default constructor.

	EntityWithOwner (const EntityWithOwner &)
	Copy constructor.

EntityWithOwner &	operator= (const EntityWithOwner &)
	Assignment operator.

virtual bool	operator== (const EntityWithOwner &) const
	Comparison operator.

virtual	~EntityWithOwner (void)
	Virtual destructor.

virtual std::string	getClassName (void) const
	Returns demangled class name.

void	set_owner (EntityWithOwner *owr)
	Assigns the owner of the object.

EntityWithOwner *	Owner (void)

const EntityWithOwner *	Owner (void) const

Public Member Functions inherited from XC::MovableObject
	MovableObject (int classTag, int dbTag)
	Constructor. More...

	MovableObject (int classTag)
	Constructor. More...

	MovableObject (const MovableObject &)
	Copy constructor. Doesn't copy the dbTag.

MovableObject &	operator= (const MovableObject &)
	Assignment operator. Doesn't copy the dbTag.

int	getClassTag (void) const
	Return the class identifier.

int	getDbTag (void) const
	Return the object identifier in the database.

int	getDbTag (Communicator &)
	Return the object identifier in the database.

void	setDbTag (int dbTag)
	Sets the object identifier in the database.

void	setDbTag (Communicator &)
	Sets the object identifier in the database if not already set. More...

virtual int	setParameter (const std::vector< std::string > &argv, Parameter &param)
	Sets the value `param` to the parameter `argv`.

virtual int	activateParameter (int parameterID)
	Activates the parameter identified by `parameterID`.

virtual int	setVariable (const std::string &variable, Information &)
	Set the value of the variable idenfified by `var`.

virtual int	getVariable (const std::string &variable, Information &)
	Return the value of the variable idenfified by `var`.

Public Member Functions inherited from XC::DistributedBase
	DistributedBase (void)
	Constructor.

virtual	~DistributedBase (void)
	Destructor.

virtual DbTagData &	getDbTagData (void) const
	Returns a vector to store class dbTags.

const int &	getDbTagDataPos (const int &i) const
	Returns the data at the i-th position.

void	setDbTagDataPos (const int &i, const int &v)
	Sets the data at the i-th position.

void	inicComm (const int &dataSize) const
	Initializes communication.

Protected Member Functions
int	sendData (Communicator &)
	Send object members through the communicator argument.

int	recvData (const Communicator &)
	Receives object members through the communicator argument.

Protected Member Functions inherited from CommandEntity
template<class T >
void	string_to (T &, const std::string &) const

Protected Member Functions inherited from EntityWithProperties
bool	isEqual (const EntityWithProperties &) const
	Return true if both objects are equal.

Protected Member Functions inherited from EntityWithOwner
virtual bool	isEqual (const EntityWithOwner &) const
	Return true if both objects are equal.

Additional Inherited Members
Public Types inherited from EntityWithProperties
typedef std::map< std::string, boost::python::object >	PythonDict

Static Public Member Functions inherited from CommandEntity
static void	resetStandardOutput (void)
	Reset the standard output streams to its defaults buffers.

Static Public Member Functions inherited from EntityWithOwner
static int	getVerbosityLevel (void)
	Get the value of the verbosity level.

static void	setVerbosityLevel (const int &)
	Set the value of the verbosity level.

Static Protected Member Functions inherited from CommandEntity
static CommandEntity *	entcmd_cast (boost::any &data)

Static Protected Attributes inherited from EntityWithOwner
static int	verbosity = 1
	Object that owns THIS ONE. More...

Detailed Description

Rayleigh damping factors.

Objects of this class are used to assign damping to all previously-defined elements and nodes. When using rayleigh damping in XC, the damping matrix for an element or node, D is specified as a combination of stiffness and mass-proportional damping matrices: D = alphaM * M + betaK * Kcurrent + betaKinit * Kinit + betaKcomm * KlastCommit References:

The following paper is something that you should read if you are new to the damping and nonlinear analysis. Finley A. Charney, "Unintended Consequences of Modeling Damping in Structures", J. Struct. Engrg. Volume 134, Issue 4, pp. 581-592 (April 2008).
Petrini, Lorenza , Maggi, Claudio , Priestley, M. J. Nigel and Calvi, G. Michele (2008) "Experimental Verification of Viscous Damping Modeling for Inelastic Time History Analyzes", Journal of Earthquake Engineering, 12:S1, pp. 125 — 145
Hall, J. F.(2006) "Problems encountered from the use (or misuse) of Rayleigh damping" Earthquake Engineering and Structural Dynamic, 35, 525–545

Constructor & Destructor Documentation

◆ RayleighDampingFactors()

XC::RayleighDampingFactors::RayleighDampingFactors	(	const double &	aM,
		const double &	bK,
		const double &	bK0,
		const double &	bKc
	)

Constructor.

Parameters

aM	factor applied to elements or nodes mass matrix.
bK	factor applied to elements current stiffness matrix.
bK0	factor applied to elements initial stiffness matrix.
bKc	factor applied to elements committed stiffness matrix.

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

src/domain/mesh/element/utils/RayleighDampingFactors.h
src/domain/mesh/element/utils/RayleighDampingFactors.cc

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ RayleighDampingFactors()