MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim > Class Template Reference

Detailed Description

template<int DisplacementDim>
class MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >

Definition at line 14 of file LinearElasticIsotropicSoftening.h.

#include <LinearElasticIsotropicSoftening.h>

Inheritance diagram for MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >:

Collaboration diagram for MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >:

Classes
class	MaterialProperties
	Variables specific to the material model. More...

Public Types
using	KelvinVector
using	KelvinMatrix
using	P = ParameterLib::Parameter<double>
Public Types inherited from MaterialLib::Solids::MechanicsBase< DisplacementDim >
using	KelvinVector
using	KelvinMatrix

Public Member Functions
	LinearElasticIsotropicSoftening (MaterialProperties material_properties, P const &strength)
double	computeFreeEnergyDensity (double const, ParameterLib::SpatialPosition const &, double const, KelvinVector const &eps, KelvinVector const &sigma, typename MechanicsBase< DisplacementDim >::MaterialStateVariables const &) const override
std::optional< std::tuple< typename MechanicsBase< DisplacementDim >::KelvinVector, std::unique_ptr< typename MechanicsBase< DisplacementDim >::MaterialStateVariables >, typename MechanicsBase< DisplacementDim >::KelvinMatrix > >	integrateStress (MaterialPropertyLib::VariableArray const &variable_array_prev, MaterialPropertyLib::VariableArray const &variable_array, double const t, ParameterLib::SpatialPosition const &x, double const, typename MechanicsBase< DisplacementDim >::MaterialStateVariables const &material_state_variables) const override
KelvinMatrix	getElasticTensor (double const t, ParameterLib::SpatialPosition const &x, double const T) const
MaterialProperties	getMaterialProperties () const
double	getBulkModulus (double const t, ParameterLib::SpatialPosition const &x, KelvinMatrix const *const) const override
Public Member Functions inherited from MaterialLib::Solids::MechanicsBase< DisplacementDim >
virtual std::unique_ptr< MaterialStateVariables >	createMaterialStateVariables () const
virtual void	initializeInternalStateVariables (double const, ParameterLib::SpatialPosition const &, typename MechanicsBase< DisplacementDim >::MaterialStateVariables &) const
virtual std::optional< std::tuple< KelvinVector, std::unique_ptr< MaterialStateVariables >, KelvinMatrix > >	integrateStress (MaterialPropertyLib::VariableArray const &variable_array_prev, MaterialPropertyLib::VariableArray const &variable_array, double const t, ParameterLib::SpatialPosition const &x, double const dt, MaterialStateVariables const &material_state_variables) const =0
virtual std::vector< InternalVariable >	getInternalVariables () const
virtual ConstitutiveModel	getConstitutiveModel () const
	Gets the type of constitutive model.
virtual double	getTemperatureRelatedCoefficient (double const, double const, ParameterLib::SpatialPosition const &, double const, double const) const
virtual double	computeFreeEnergyDensity (double const t, ParameterLib::SpatialPosition const &x, double const dt, KelvinVector const &eps, KelvinVector const &sigma, MaterialStateVariables const &material_state_variables) const =0
virtual	~MechanicsBase ()=default

Static Public Attributes
static int const	KelvinVectorSize

Protected Attributes
MaterialProperties	_mp
P const &	_strength

Member Typedef Documentation

KelvinMatrix

template<int DisplacementDim>

using MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::KelvinMatrix

Initial value:

 
        MathLib::KelvinVector::KelvinMatrixType<DisplacementDim>

Definition at line 61 of file LinearElasticIsotropicSoftening.h.

KelvinVector

template<int DisplacementDim>

using MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::KelvinVector

Initial value:

 
        MathLib::KelvinVector::KelvinVectorType<DisplacementDim>

Definition at line 59 of file LinearElasticIsotropicSoftening.h.

P

template<int DisplacementDim>

using MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::P = ParameterLib::Parameter<double>

Definition at line 63 of file LinearElasticIsotropicSoftening.h.

Constructor & Destructor Documentation

LinearElasticIsotropicSoftening()

template<int DisplacementDim>

MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::LinearElasticIsotropicSoftening ( MaterialProperties material_properties, P const & strength )

inline

Definition at line 65 of file LinearElasticIsotropicSoftening.h.

        : _mp(std::move(material_properties)), _strength(std::move(strength))
    {
    }

References _mp, and _strength.

Member Function Documentation

computeFreeEnergyDensity()

template<int DisplacementDim>

double MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::computeFreeEnergyDensity ( double const , ParameterLib::SpatialPosition const & , double const , KelvinVector const & eps, KelvinVector const & sigma, typename MechanicsBase< DisplacementDim >::MaterialStateVariables const &  ) const

inlineoverride

Definition at line 71 of file LinearElasticIsotropicSoftening.h.

    {
        return eps.dot(sigma) / 2;
    }

getBulkModulus()

template<int DisplacementDim>

double MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::getBulkModulus ( double const t, ParameterLib::SpatialPosition const & x, KelvinMatrix const * const  ) const

inlineoverridevirtual

Reimplemented from MaterialLib::Solids::MechanicsBase< DisplacementDim >.

Definition at line 103 of file LinearElasticIsotropicSoftening.h.

    {
        return _mp.bulk_modulus(t, x);
    }

References _mp.

getElasticTensor()

template<int DisplacementDim>

LinearElasticIsotropicSoftening< DisplacementDim >::KelvinMatrix MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::getElasticTensor	(	double const	t,
		ParameterLib::SpatialPosition const &	x,
		double const	T ) const

Definition at line 57 of file LinearElasticIsotropicSoftening.cpp.

{
    using KelvinMatrix =
        MathLib::KelvinVector::KelvinMatrixType<DisplacementDim>;
 
    KelvinMatrix tangentStiffness = KelvinMatrix::Zero();
    tangentStiffness.template topLeftCorner<3, 3>().setConstant(
        _mp.lambda(t, x));
    tangentStiffness.noalias() += 2 * _mp.mu(t, x) * KelvinMatrix::Identity();
    return tangentStiffness;
}

References _mp.

Referenced by integrateStress().

getMaterialProperties()

template<int DisplacementDim>

MaterialProperties MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::getMaterialProperties ( ) const

inline

Definition at line 101 of file LinearElasticIsotropicSoftening.h.

{ return _mp; }

References _mp.

integrateStress()

template<int DisplacementDim>

std::optional< std::tuple< typename MechanicsBase< DisplacementDim >::KelvinVector, std::unique_ptr< typename MechanicsBase< DisplacementDim >::MaterialStateVariables >, typename MechanicsBase< DisplacementDim >::KelvinMatrix > > MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::integrateStress ( MaterialPropertyLib::VariableArray const & variable_array_prev, MaterialPropertyLib::VariableArray const & variable_array, double const t, ParameterLib::SpatialPosition const & x, double const dt, typename MechanicsBase< DisplacementDim >::MaterialStateVariables const & material_state_variables ) const

override

Definition at line 19 of file LinearElasticIsotropicSoftening.cpp.

{
    auto const& eps_m = std::get<MPL::SymmetricTensor<DisplacementDim>>(
        variable_array.mechanical_strain);
    auto const& eps_m_prev = std::get<MPL::SymmetricTensor<DisplacementDim>>(
        variable_array_prev.mechanical_strain);
    auto const& sigma_prev = std::get<MPL::SymmetricTensor<DisplacementDim>>(
        variable_array_prev.stress);
    auto const T = variable_array_prev.temperature;
 
    double const strength = _strength(t, x)[0];
    double const strength_prev = _strength(t - dt, x)[0];
 
    KelvinMatrix C = strength * getElasticTensor(t, x, T);
    KelvinVector sigma = sigma_prev + C * (eps_m - eps_m_prev);
 
    using Invariants = MathLib::KelvinVector::Invariants<KelvinVectorSize>;
    double const sig_tr = Invariants::trace(sigma);
    if (strength != strength_prev && strength_prev != 0.0 && sig_tr != 0.0)
    {
        sigma *=
            strength * Invariants::trace(sigma_prev) / (strength_prev * sig_tr);
    }
 
    return {std::make_tuple(
        sigma,
        std::make_unique<
            typename MechanicsBase<DisplacementDim>::MaterialStateVariables>(),
        C)};
}

References _strength, getElasticTensor(), MaterialPropertyLib::VariableArray::mechanical_strain, MaterialPropertyLib::VariableArray::stress, and MaterialPropertyLib::VariableArray::temperature.

Member Data Documentation

_mp

template<int DisplacementDim>

MaterialProperties MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::_mp

protected

Definition at line 111 of file LinearElasticIsotropicSoftening.h.

Referenced by LinearElasticIsotropicSoftening(), getBulkModulus(), getElasticTensor(), and getMaterialProperties().

_strength

template<int DisplacementDim>

P const& MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::_strength

protected

Definition at line 112 of file LinearElasticIsotropicSoftening.h.

Referenced by LinearElasticIsotropicSoftening(), and integrateStress().

KelvinVectorSize

template<int DisplacementDim>

int const MaterialLib::Solids::LinearElasticIsotropicSoftening< DisplacementDim >::KelvinVectorSize

static

Initial value:

=
        MathLib::KelvinVector::kelvin_vector_dimensions(DisplacementDim)

Definition at line 57 of file LinearElasticIsotropicSoftening.h.

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

• LinearElasticIsotropicSoftening.h
• LinearElasticIsotropicSoftening.cpp