TH2M/LocalAssemblerInterface.h

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
#include "ConstitutiveRelations/ConstitutiveData.h"
#include "ConstitutiveRelations/MaterialState.h"
#include "ConstitutiveRelations/SolidMechanics.h"
#include "MaterialLib/SolidModels/SelectSolidConstitutiveRelation.h"
#include "NumLib/Extrapolation/ExtrapolatableElement.h"
#include "NumLib/Fem/Integration/GenericIntegrationMethod.h"
#include "ProcessLib/LocalAssemblerInterface.h"
#include "ProcessLib/Reflection/ReflectionSetIPData.h"
#include "ProcessLib/Utils/SetOrGetIntegrationPointData.h"
#include "TH2MProcessData.h"
 
namespace ProcessLib
{
namespace TH2M
{
template <int DisplacementDim>
struct LocalAssemblerInterface : public ProcessLib::LocalAssemblerInterface,
                                 public NumLib::ExtrapolatableElement
{
    LocalAssemblerInterface(
        MeshLib::Element const& e,
        NumLib::GenericIntegrationMethod const& integration_method,
        bool const is_axially_symmetric,
        TH2MProcessData<DisplacementDim>& process_data)
        : process_data_(process_data),
          integration_method_(integration_method),
          element_(e),
          is_axially_symmetric_(is_axially_symmetric),
          solid_material_(MaterialLib::Solids::selectSolidConstitutiveRelation(
              process_data_.solid_materials, process_data_.material_ids,
              element_.getID()))
    {
        unsigned const n_integration_points =
            integration_method_.getNumberOfPoints();
 
        current_states_.resize(n_integration_points);
        prev_states_.resize(n_integration_points);
        output_data_.resize(n_integration_points);
 
        material_states_.reserve(n_integration_points);
        for (unsigned ip = 0; ip < n_integration_points; ++ip)
        {
            material_states_.emplace_back(
                solid_material_.createMaterialStateVariables());
 
            // Set initial stress field to zero. Might be overwritten by
            // integration point data or initial stress.
            current_states_[ip].eff_stress_data.sigma_eff =
                ConstitutiveRelations::KelvinVector<DisplacementDim>::Zero();
        }
    }
 
    virtual std::size_t setIPDataInitialConditions(
        std::string_view name, double const* values,
        int const integration_order) = 0;
 
    // TODO move to NumLib::ExtrapolatableElement
    unsigned getNumberOfIntegrationPoints() const
    {
        return integration_method_.getNumberOfPoints();
    }
 
    int getMaterialID() const
    {
        return process_data_.material_ids == nullptr
                   ? 0
                   : (*process_data_.material_ids)[element_.getID()];
    }
 
    std::vector<double> getMaterialStateVariableInternalState(
        std::function<std::span<double>(
            typename ConstitutiveRelations::SolidConstitutiveRelation<
                DisplacementDim>::MaterialStateVariables&)> const&
            get_values_span,
        int const& n_components) const
    {
        return ProcessLib::getIntegrationPointDataMaterialStateVariables(
            material_states_,
            &ConstitutiveRelations::MaterialStateData<
                DisplacementDim>::material_state_variables,
            get_values_span, n_components);
    }
 
    typename ConstitutiveRelations::SolidConstitutiveRelation<
        DisplacementDim>::MaterialStateVariables const&
    getMaterialStateVariablesAt(unsigned integration_point) const
    {
        return *material_states_[integration_point].material_state_variables;
    }
 
    static auto getReflectionDataForOutput()
    {
        using Self = LocalAssemblerInterface<DisplacementDim>;
 
        return ProcessLib::Reflection::reflectWithoutName(
            &Self::current_states_, &Self::output_data_);
    }
 
    TH2MProcessData<DisplacementDim>& process_data_;
 
    std::vector<typename ConstitutiveRelations::StatefulData<DisplacementDim>>
        current_states_;  // TODO maybe do not store but rather re-evaluate for
                          // state update
    std::vector<
        typename ConstitutiveRelations::StatefulDataPrev<DisplacementDim>>
        prev_states_;
 
    // Material state is special, because it contains both the current and the
    // old state.
    std::vector<ConstitutiveRelations::MaterialStateData<DisplacementDim>>
        material_states_;
    std::vector<ConstitutiveRelations::OutputData<DisplacementDim>>
        output_data_;
 
    NumLib::GenericIntegrationMethod const& integration_method_;
    MeshLib::Element const& element_;
    bool const is_axially_symmetric_;
    ConstitutiveRelations::SolidConstitutiveRelation<DisplacementDim> const&
        solid_material_;
};
 
}  // namespace TH2M
}  // namespace ProcessLib