NuTo::QuasistaticSolver Class Reference

#include <QuasistaticSolver.h>

Public Member Functions
	QuasistaticSolver (TimeDependentProblem &equations, DofType dof)
	Ctor. More...
	QuasistaticSolver (TimeDependentProblem &equations, std::vector< DofType > dofs)
	Ctor. More...
void	SetConstraints (Constraint::Constraints constraints)
void	SetGlobalTime (double globalTime)
	sets the global time required for evaluating the constraint right hand side More...
DofVector< double >	TrialState (double newGlobalTime, const NuTo::ConstrainedSystemSolver &solver)
	computes the trial state of the system More...
void	UpdateHistory (const DofVector< double > &x)
	calculates and stores the history variables for the state x More...
DofVector< double >	Residual (const DofVector< double > &u)
	evaluates the residual R(u), part of NuTo::NewtonRaphson::Problem More...
DofMatrixSparse< double >	Derivative (const DofVector< double > &u)
	evaluates the derivative dR/dx, part of NuTo::NewtonRaphson::Problem More...
double	Norm (const DofVector< double > &residual) const
	evaluates the norm of R, part of NuTo::NewtonRaphson::Problem More...
void	Info (int i, const DofVector< double > &x, const DofVector< double > &r) const
	prints values during the newton iterations, part of NuTo::NewtonRaphson::Problem More...
int	DoStep (double newGlobalTime, std::string solverType="EigenSparseLU")
	Updates mProblem to time newGlobalTime and saves the new state mX upon convergence. More...
void	WriteTimeDofResidual (std::ostream &out, DofType dofType, std::vector< int > dofNumbers)
	Writes the current time, the mean dof values and the sum of the residual into out, only for the given dof type and given dof numbers. More...

Public Attributes
double	mTolerance = 1.e-10
	tolerance for Norm(R), public member because it is part of NuTo::NewtonRaphson::Problem More...

Constructor & Destructor Documentation

QuasistaticSolver::QuasistaticSolver	(	TimeDependentProblem &	equations,
		DofType	dof
	)

Ctor.

Parameters

equations	system of equations including Gradient(), Hessian0() and UpdateHistory()
dof	dof type

QuasistaticSolver::QuasistaticSolver	(	TimeDependentProblem &	equations,
		std::vector< DofType >	dofs
	)

Ctor.

Parameters

equations	system of equations including Gradient(), Hessian0() and UpdateHistory()
dofs	multiple dof types

Member Function Documentation

DofMatrixSparse< double > QuasistaticSolver::Derivative

(

const DofVector< double > &

u

)

evaluates the derivative dR/dx, part of NuTo::NewtonRaphson::Problem

Parameters

u	independent dof values

int QuasistaticSolver::DoStep	(	double	newGlobalTime,
		std::string	solverType = "EigenSparseLU"
	)

Updates mProblem to time newGlobalTime and saves the new state mX upon convergence.

Parameters

newGlobalTime	new global time
solverType	solver type from NuTo::EigenSparseSolve(...)

Returns

number of iterations required by the newton algorithm, throws upon failure to converge

void QuasistaticSolver::Info	(	int	i,
		const DofVector< double > &	x,
		const DofVector< double > &	r
	)		const

prints values during the newton iterations, part of NuTo::NewtonRaphson::Problem

Parameters

r	residual residual vector

double QuasistaticSolver::Norm

(

const DofVector< double > &

residual

)

const

evaluates the norm of R, part of NuTo::NewtonRaphson::Problem

Parameters

residual

residual vector

DofVector< double > QuasistaticSolver::Residual

(

const DofVector< double > &

u

)

evaluates the residual R(u), part of NuTo::NewtonRaphson::Problem

Parameters

u	independent dof values

void QuasistaticSolver::SetConstraints

(

Constraint::Constraints

constraints

)

Parameters

constraints

linear constraints

void QuasistaticSolver::SetGlobalTime

(

double

globalTime

)

sets the global time required for evaluating the constraint right hand side

Parameters

globalTime

global time

DofVector< double > QuasistaticSolver::TrialState	(	double	newGlobalTime,
		const NuTo::ConstrainedSystemSolver &	solver
	)

computes the trial state of the system

Parameters

newGlobalTime	new time, for which the trial state is to be computed
solver	that allows to extract the constraint displacements from previous steps

void QuasistaticSolver::UpdateHistory

(

const DofVector< double > &

x

)

calculates and stores the history variables for the state x

Parameters

x	independent dof values

void QuasistaticSolver::WriteTimeDofResidual	(	std::ostream &	out,
		DofType	dofType,
		std::vector< int >	dofNumbers
	)

Writes the current time, the mean dof values and the sum of the residual into out, only for the given dof type and given dof numbers.

Parameters

out	output stream
dofType	dof type
dofNumbers	dof numbers that are considered

Member Data Documentation

double NuTo::QuasistaticSolver::mTolerance = 1.e-10

tolerance for Norm(R), public member because it is part of NuTo::NewtonRaphson::Problem

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

• nuto/mechanics/tools/QuasistaticSolver.h
• nuto/mechanics/tools/QuasistaticSolver.cpp