MaterialLib::Solids::Creep Namespace Reference

Classes
class	CreepBGRa
	A class for computing the BGRa creep model, which reads. More...

Functions
template<int DisplacementDim>
std::unique_ptr< MaterialLib::Solids::MechanicsBase< DisplacementDim > >	createCreepBGRa (std::vector< std::unique_ptr< ParameterLib::ParameterBase >> const &parameters, BaseLib::ConfigTree const &config)
template std::unique_ptr< MaterialLib::Solids::MechanicsBase< 2 > >	createCreepBGRa< 2 > (std::vector< std::unique_ptr< ParameterLib::ParameterBase >> const &parameters, BaseLib::ConfigTree const &config)
template std::unique_ptr< MaterialLib::Solids::MechanicsBase< 3 > >	createCreepBGRa< 3 > (std::vector< std::unique_ptr< ParameterLib::ParameterBase >> const &parameters, BaseLib::ConfigTree const &config)
double	getCreepConstantCoefficient (const double A, const double n, const double sigma0)

Function Documentation

createCreepBGRa()

template<int DisplacementDim>

std::unique_ptr< MaterialLib::Solids::MechanicsBase< DisplacementDim > > MaterialLib::Solids::Creep::createCreepBGRa	(	std::vector< std::unique_ptr< ParameterLib::ParameterBase >> const &	parameters,
		BaseLib::ConfigTree const &	config
	)

Input File Parameter:

material__solid__constitutive_relation__type

Input File Parameter:

material__solid__constitutive_relation__CreepBGRa__a

Input File Parameter:

material__solid__constitutive_relation__CreepBGRa__n

Input File Parameter:

material__solid__constitutive_relation__CreepBGRa__sigma0

Input File Parameter:

material__solid__constitutive_relation__CreepBGRa__q

Input File Parameter:

material__solid__constitutive_relation__CreepBGRa__nonlinear_solver

Definition at line 30 of file CreateCreepBGRa.cpp.

{
    config.checkConfigParameter("type", "CreepBGRa");
    DBUG("Create CreepBGRa material");
 
    // Read elastic data first.
    const bool skip_type_checking = true;
    auto elastic_data =
        MaterialLib::Solids::createLinearElasticIsotropic<DisplacementDim>(
            parameters, config, skip_type_checking);
 
    auto& A = ParameterLib::findParameter<double>(
        config, "a", parameters, 1);
 
    auto& n = ParameterLib::findParameter<double>(
        config, "n", parameters, 1);
 
    auto& sigma0 = ParameterLib::findParameter<double>(
        config, "sigma0", parameters, 1);
 
    auto& Q = ParameterLib::findParameter<double>(
        config, "q", parameters, 1);
 
    auto const& nonlinear_solver_config =
        config.getConfigSubtree("nonlinear_solver");
    auto const nonlinear_solver_parameters =
        NumLib::createNewtonRaphsonSolverParameters(nonlinear_solver_config);
 
    return std::unique_ptr<CreepBGRa<DisplacementDim>>{
        new CreepBGRa<DisplacementDim>{elastic_data->getMaterialProperties(),
                                       nonlinear_solver_parameters, A, n,
                                       sigma0, Q}};
}

References BaseLib::ConfigTree::checkConfigParameter(), NumLib::createNewtonRaphsonSolverParameters(), DBUG(), BaseLib::ConfigTree::getConfigSubtree(), and MaterialLib::Solids::LinearElasticIsotropic< DisplacementDim >::getMaterialProperties().

createCreepBGRa< 2 >()

template std::unique_ptr< MaterialLib::Solids::MechanicsBase< 2 > > MaterialLib::Solids::Creep::createCreepBGRa< 2 >	(	std::vector< std::unique_ptr< ParameterLib::ParameterBase >> const &	parameters,
		BaseLib::ConfigTree const &	config
	)

createCreepBGRa< 3 >()

template std::unique_ptr< MaterialLib::Solids::MechanicsBase< 3 > > MaterialLib::Solids::Creep::createCreepBGRa< 3 >	(	std::vector< std::unique_ptr< ParameterLib::ParameterBase >> const &	parameters,
		BaseLib::ConfigTree const &	config
	)

getCreepConstantCoefficient()

double MaterialLib::Solids::Creep::getCreepConstantCoefficient	(	const double	A,
		const double	n,
		const double	sigma0
	)

Definition at line 27 of file CreepBGRa.cpp.

{
    return A * std::pow(1.5, 0.5 * (1 + n)) / std::pow(sigma0, n);
}

Referenced by MaterialLib::Solids::Creep::CreepBGRa< DisplacementDim >::getTemperatureRelatedCoefficient(), and MaterialLib::Solids::Creep::CreepBGRa< DisplacementDim >::integrateStress().