IntegrationPointData.h

Go to the documentation of this file.

 
#pragma once
 
#include <memory>
 
#include "MathLib/KelvinVector.h"
 
namespace ProcessLib
{
namespace RichardsMechanics
{
template <typename BMatricesType, typename ShapeMatrixTypeDisplacement,
          typename ShapeMatricesTypePressure, int DisplacementDim, int NPoints>
struct IntegrationPointData final
{
    explicit IntegrationPointData(
        MaterialLib::Solids::MechanicsBase<DisplacementDim> const&
            solid_material)
        : solid_material(solid_material),
          material_state_variables(
              solid_material.createMaterialStateVariables())
    {
        // Initialize current time step values
        static const int kelvin_vector_size =
            MathLib::KelvinVector::kelvin_vector_dimensions(DisplacementDim);
        sigma_eff.setZero(kelvin_vector_size);
        sigma_sw.setZero(kelvin_vector_size);
        eps.setZero(kelvin_vector_size);
        eps_m.setZero(kelvin_vector_size);
 
        // Previous time step values are not initialized and are set later.
        eps_prev.resize(kelvin_vector_size);
        eps_m_prev.resize(kelvin_vector_size);
        sigma_eff_prev.resize(kelvin_vector_size);
    }
 
    typename BMatricesType::KelvinVectorType sigma_eff, sigma_eff_prev;
    typename BMatricesType::KelvinVectorType sigma_sw, sigma_sw_prev;
    typename BMatricesType::KelvinVectorType eps, eps_prev;
    typename BMatricesType::KelvinVectorType eps_m, eps_m_prev;
 
    typename ShapeMatrixTypeDisplacement::NodalRowVectorType N_u;
    typename ShapeMatrixTypeDisplacement::GlobalDimNodalMatrixType dNdx_u;
 
    typename ShapeMatricesTypePressure::NodalRowVectorType N_p;
    typename ShapeMatricesTypePressure::GlobalDimNodalMatrixType dNdx_p;
 
    typename ShapeMatricesTypePressure::GlobalDimVectorType v_darcy;
 
    double liquid_pressure_m = std::numeric_limits<double>::quiet_NaN();
    double liquid_pressure_m_prev = std::numeric_limits<double>::quiet_NaN();
    double saturation = std::numeric_limits<double>::quiet_NaN();
    double saturation_prev = std::numeric_limits<double>::quiet_NaN();
    double saturation_m = std::numeric_limits<double>::quiet_NaN();
    double saturation_m_prev = std::numeric_limits<double>::quiet_NaN();
    double porosity = std::numeric_limits<double>::quiet_NaN();
    double porosity_prev = std::numeric_limits<double>::quiet_NaN();
    double transport_porosity = std::numeric_limits<double>::quiet_NaN();
    double transport_porosity_prev = std::numeric_limits<double>::quiet_NaN();
    double dry_density_solid = std::numeric_limits<double>::quiet_NaN();
    double dry_density_pellet_saturated =
        std::numeric_limits<double>::quiet_NaN();
    double dry_density_pellet_unsaturated =
        std::numeric_limits<double>::quiet_NaN();
 
    MaterialLib::Solids::MechanicsBase<DisplacementDim> const& solid_material;
    std::unique_ptr<typename MaterialLib::Solids::MechanicsBase<
        DisplacementDim>::MaterialStateVariables>
        material_state_variables;
    double integration_weight = std::numeric_limits<double>::quiet_NaN();
 
    void pushBackState()
    {
        eps_prev = eps;
        eps_m_prev = eps_m;
        sigma_eff_prev = sigma_eff;
        sigma_sw_prev = sigma_sw;
        saturation_prev = saturation;
        saturation_m_prev = saturation_m;
        porosity_prev = porosity;
        transport_porosity_prev = transport_porosity;
        liquid_pressure_m_prev = liquid_pressure_m;
        material_state_variables->pushBackState();
    }
 
    MathLib::KelvinVector::KelvinMatrixType<DisplacementDim>
    computeElasticTangentStiffness(
        double const t,
        ParameterLib::SpatialPosition const& x_position,
        double const dt,
        double const temperature)
    {
        namespace MPL = MaterialPropertyLib;
 
        MPL::VariableArray variable_array;
        MPL::VariableArray variable_array_prev;
 
        auto const null_state = solid_material.createMaterialStateVariables();
        solid_material.initializeInternalStateVariables(t, x_position,
                                                        *null_state);
 
        using KV = MathLib::KelvinVector::KelvinVectorType<DisplacementDim>;
 
        variable_array.stress.emplace<KV>(KV::Zero());
        variable_array.mechanical_strain.emplace<KV>(KV::Zero());
        variable_array.temperature = temperature;
 
        variable_array_prev.stress.emplace<KV>(KV::Zero());
        variable_array_prev.mechanical_strain.emplace<KV>(KV::Zero());
        variable_array_prev.temperature = temperature;
 
        auto&& solution =
            solid_material.integrateStress(variable_array_prev, variable_array,
                                           t, x_position, dt, *null_state);
 
        if (!solution)
        {
            OGS_FATAL("Computation of elastic tangent stiffness failed.");
        }
 
        MathLib::KelvinVector::KelvinMatrixType<DisplacementDim> C =
            std::move(std::get<2>(*solution));
 
        return C;
    }
 
    typename BMatricesType::KelvinMatrixType updateConstitutiveRelation(
        MaterialPropertyLib::VariableArray const& variable_array,
        double const t,
        ParameterLib::SpatialPosition const& x_position,
        double const dt,
        double const temperature)
    {
        MaterialPropertyLib::VariableArray variable_array_prev;
        variable_array_prev.stress
            .emplace<MathLib::KelvinVector::KelvinVectorType<DisplacementDim>>(
                sigma_eff_prev);
        variable_array_prev.mechanical_strain
            .emplace<MathLib::KelvinVector::KelvinVectorType<DisplacementDim>>(
                eps_m_prev);
        variable_array_prev.temperature = temperature;
 
        auto&& solution = solid_material.integrateStress(
            variable_array_prev, variable_array, t, x_position, dt,
            *material_state_variables);
 
        if (!solution)
        {
            OGS_FATAL("Computation of local constitutive relation failed.");
        }
 
        MathLib::KelvinVector::KelvinMatrixType<DisplacementDim> C;
        std::tie(sigma_eff, material_state_variables, C) = std::move(*solution);
 
        return C;
    }
 
    EIGEN_MAKE_ALIGNED_OPERATOR_NEW;
};
 
}  // namespace RichardsMechanics
}  // namespace ProcessLib