diff --git a/MaterialLib/SolidModels/Ehlers-impl.h b/MaterialLib/SolidModels/Ehlers-impl.h
index ec441ec48d6a828ad4adb93cdd4907ad0b11f9fb..e6e1eef452d418822c3d32622f00e527038ef9a6 100644
--- a/MaterialLib/SolidModels/Ehlers-impl.h
+++ b/MaterialLib/SolidModels/Ehlers-impl.h
@@ -655,10 +655,10 @@ newton(double const dt, MaterialProperties const& mp,
}
template <int DisplacementDim>
-std::tuple<typename SolidEhlers<DisplacementDim>::KelvinVector,
- std::unique_ptr<
- typename MechanicsBase<DisplacementDim>::MaterialStateVariables>,
- typename SolidEhlers<DisplacementDim>::KelvinMatrix>
+boost::optional<std::tuple<typename SolidEhlers<DisplacementDim>::KelvinVector,
+ std::unique_ptr<typename MechanicsBase<
+ DisplacementDim>::MaterialStateVariables>,
+ typename SolidEhlers<DisplacementDim>::KelvinMatrix>>
SolidEhlers<DisplacementDim>::integrateStress(
double const t,
ProcessLib::SpatialPosition const& x,
@@ -727,7 +727,7 @@ SolidEhlers<DisplacementDim>::integrateStress(
state.eps_p_prev, s, sigma))
std::tie(sigma, state.eps_p, linear_solver) = *solution;
else
- return {sigma, nullptr, tangentStiffness};
+ return {};
if (_damage_properties)
{
@@ -759,11 +759,12 @@ SolidEhlers<DisplacementDim>::integrateStress(
sigma_final *= 1 - state.damage.value();
return {
- sigma_final,
- std::unique_ptr<
- typename MechanicsBase<DisplacementDim>::MaterialStateVariables>{
- new StateVariables<DisplacementDim>{state}},
- tangentStiffness};
+ {sigma_final,
+ std::unique_ptr<
+ typename MechanicsBase<DisplacementDim>::MaterialStateVariables>{
+ new StateVariables<DisplacementDim>{
+ static_cast<StateVariables<DisplacementDim> const&>(state)}},
+ tangentStiffness}};
}
} // namespace Ehlers
diff --git a/MaterialLib/SolidModels/Ehlers.h b/MaterialLib/SolidModels/Ehlers.h
index ff262fccd60ca48a142f0519cddf25816ce8db13..b0a712e42cccfa9d07442b177f3e811e46c266d7 100644
--- a/MaterialLib/SolidModels/Ehlers.h
+++ b/MaterialLib/SolidModels/Ehlers.h
@@ -223,9 +223,10 @@ public:
{
}
- std::tuple<KelvinVector, std::unique_ptr<typename MechanicsBase<
- DisplacementDim>::MaterialStateVariables>,
- KelvinMatrix>
+ boost::optional<
+ std::tuple<KelvinVector, std::unique_ptr<typename MechanicsBase<
+ DisplacementDim>::MaterialStateVariables>,
+ KelvinMatrix>>
integrateStress(
double const t,
ProcessLib::SpatialPosition const& x,
diff --git a/MaterialLib/SolidModels/LinearElasticIsotropic.h b/MaterialLib/SolidModels/LinearElasticIsotropic.h
index 313b24c38b68eead815fec44a5a27e659df35c43..828230456bf1d20b9c81c8c5b07b2b8e7a7f2956 100644
--- a/MaterialLib/SolidModels/LinearElasticIsotropic.h
+++ b/MaterialLib/SolidModels/LinearElasticIsotropic.h
@@ -87,10 +87,10 @@ public:
{
}
- std::tuple<KelvinVector,
- std::unique_ptr<typename MechanicsBase<
- DisplacementDim>::MaterialStateVariables>,
- KelvinMatrix>
+ boost::optional<std::tuple<KelvinVector,
+ std::unique_ptr<typename MechanicsBase<
+ DisplacementDim>::MaterialStateVariables>,
+ KelvinMatrix>>
integrateStress(
double const t,
ProcessLib::SpatialPosition const& x,
@@ -108,14 +108,13 @@ public:
KelvinVector sigma = sigma_prev + C * (eps - eps_prev);
- return std::make_tuple(
- sigma,
- std::unique_ptr<typename MechanicsBase<
- DisplacementDim>::MaterialStateVariables>{
- new MaterialStateVariables{
- static_cast<MaterialStateVariables const&>(
- material_state_variables)}},
- C);
+ return {{sigma,
+ std::unique_ptr<typename MechanicsBase<
+ DisplacementDim>::MaterialStateVariables>{
+ new MaterialStateVariables{
+ static_cast<MaterialStateVariables const&>(
+ material_state_variables)}},
+ C}};
}
private:
diff --git a/MaterialLib/SolidModels/Lubby2-impl.h b/MaterialLib/SolidModels/Lubby2-impl.h
index 7ca157ca7d3e7433777e29828b2e2327120c81b6..fcd2739e1e2b1d31b94a81cea75b5adfc16f70e8 100644
--- a/MaterialLib/SolidModels/Lubby2-impl.h
+++ b/MaterialLib/SolidModels/Lubby2-impl.h
@@ -65,10 +65,10 @@ ProcessLib::KelvinMatrixType<DisplacementDim> tangentStiffnessA(
};
template <int DisplacementDim>
-std::tuple<typename Lubby2<DisplacementDim>::KelvinVector,
- std::unique_ptr<
- typename MechanicsBase<DisplacementDim>::MaterialStateVariables>,
- typename Lubby2<DisplacementDim>::KelvinMatrix>
+boost::optional<std::tuple<typename Lubby2<DisplacementDim>::KelvinVector,
+ std::unique_ptr<typename MechanicsBase<
+ DisplacementDim>::MaterialStateVariables>,
+ typename Lubby2<DisplacementDim>::KelvinMatrix>>
Lubby2<DisplacementDim>::integrateStress(
double const t,
ProcessLib::SpatialPosition const& x,
@@ -164,7 +164,7 @@ Lubby2<DisplacementDim>::integrateStress(
auto const success_iterations = newton_solver.solve(K_loc);
if (!success_iterations)
- return std::make_tuple(sigma_prev, nullptr, KelvinMatrix::Zero());
+ return {};
// If the Newton loop didn't run, the linear solver will not be
// initialized.
@@ -180,13 +180,13 @@ Lubby2<DisplacementDim>::integrateStress(
// Hydrostatic part for the stress and the tangent.
double const eps_i_trace = Invariants::trace(eps);
- return std::make_tuple(
- local_lubby2_properties.GM0 * sigd_j +
- local_lubby2_properties.KM0 * eps_i_trace * Invariants::identity2,
- std::unique_ptr<
- typename MechanicsBase<DisplacementDim>::MaterialStateVariables>{
- new MaterialStateVariables{state}},
- C);
+ return {
+ {local_lubby2_properties.GM0 * sigd_j +
+ local_lubby2_properties.KM0 * eps_i_trace * Invariants::identity2,
+ std::unique_ptr<
+ typename MechanicsBase<DisplacementDim>::MaterialStateVariables>{
+ new MaterialStateVariables{state}},
+ C}};
}
template <int DisplacementDim>
diff --git a/MaterialLib/SolidModels/Lubby2.h b/MaterialLib/SolidModels/Lubby2.h
index 0747951c04723cd5e97524ce378a12694dfd3d8e..5c3516b7bfefc11294547b4b49228c91f312f83b 100644
--- a/MaterialLib/SolidModels/Lubby2.h
+++ b/MaterialLib/SolidModels/Lubby2.h
@@ -181,10 +181,10 @@ public:
{
}
- std::tuple<KelvinVector,
- std::unique_ptr<typename MechanicsBase<
- DisplacementDim>::MaterialStateVariables>,
- KelvinMatrix>
+ boost::optional<std::tuple<KelvinVector,
+ std::unique_ptr<typename MechanicsBase<
+ DisplacementDim>::MaterialStateVariables>,
+ KelvinMatrix>>
integrateStress(
double const t,
ProcessLib::SpatialPosition const& x,
diff --git a/MaterialLib/SolidModels/MechanicsBase.h b/MaterialLib/SolidModels/MechanicsBase.h
index edcf6072952a83b22ee46f089e9bd8ebe4b33126..6f3135144976136beaeee78bd984e73d6b2cba36 100644
--- a/MaterialLib/SolidModels/MechanicsBase.h
+++ b/MaterialLib/SolidModels/MechanicsBase.h
@@ -9,6 +9,7 @@
#pragma once
+#include <boost/optional.hpp>
#include <memory>
#include <tuple>
@@ -60,11 +61,11 @@ struct MechanicsBase
/// Dynamic size Kelvin vector and matrix wrapper for the polymorphic
/// constitutive relation compute function.
- /// Returns false in case of errors in the computation if Newton iterations
- /// did not converge, for example.
- std::tuple<KelvinVector,
- std::unique_ptr<MaterialStateVariables>,
- KelvinMatrix>
+ /// Returns nothing in case of errors in the computation if Newton
+ /// iterations did not converge, for example.
+ boost::optional<std::tuple<KelvinVector,
+ std::unique_ptr<MaterialStateVariables>,
+ KelvinMatrix>>
integrateStress(double const t,
ProcessLib::SpatialPosition const& x,
double const dt,
@@ -90,11 +91,11 @@ struct MechanicsBase
/// This should be implemented in the derived model. Fixed Kelvin vector and
/// matrix size version; for dynamic size arguments there is an overloaded
/// wrapper function.
- /// Returns false in case of errors in the computation if Newton iterations
- /// did not converge, for example.
- virtual std::tuple<KelvinVector,
- std::unique_ptr<MaterialStateVariables>,
- KelvinMatrix>
+ /// Returns nothing in case of errors in the computation if Newton
+ /// iterations did not converge, for example.
+ virtual boost::optional<std::tuple<KelvinVector,
+ std::unique_ptr<MaterialStateVariables>,
+ KelvinMatrix>>
integrateStress(double const t,
ProcessLib::SpatialPosition const& x,
double const dt,
diff --git a/ProcessLib/HydroMechanics/HydroMechanicsFEM.h b/ProcessLib/HydroMechanics/HydroMechanicsFEM.h
index 3170269f1dcfda142221fd1f4b621b078683bbc5..1868619a5d489e5f9f872d0b4a018f0436bf5598 100644
--- a/ProcessLib/HydroMechanics/HydroMechanicsFEM.h
+++ b/ProcessLib/HydroMechanics/HydroMechanicsFEM.h
@@ -90,17 +90,15 @@ struct IntegrationPointData final
{
eps.noalias() = b_matrices * u;
- KelvinMatrixType<DisplacementDim> C;
- std::unique_ptr<typename MaterialLib::Solids::MechanicsBase<
- DisplacementDim>::MaterialStateVariables>
- new_state;
- std::tie(sigma_eff, new_state, C) = solid_material.integrateStress(
+ auto&& solution = solid_material.integrateStress(
t, x_position, dt, eps_prev, eps, sigma_eff_prev,
*material_state_variables);
- if (!new_state)
+ if (!solution)
OGS_FATAL("Computation of local constitutive relation failed.");
- material_state_variables = std::move(new_state);
+
+ KelvinMatrixType<DisplacementDim> C;
+ std::tie(sigma_eff, material_state_variables, C) = std::move(*solution);
return C;
}
diff --git a/ProcessLib/LIE/HydroMechanics/LocalAssembler/HydroMechanicsLocalAssemblerMatrix-impl.h b/ProcessLib/LIE/HydroMechanics/LocalAssembler/HydroMechanicsLocalAssemblerMatrix-impl.h
index ad5d9e2eb23d52a28b7943178a38db6d2e9fc131..9921426409e8d994c93a6d219e54cd4c06c537b2 100644
--- a/ProcessLib/LIE/HydroMechanics/LocalAssembler/HydroMechanicsLocalAssemblerMatrix-impl.h
+++ b/ProcessLib/LIE/HydroMechanics/LocalAssembler/HydroMechanicsLocalAssemblerMatrix-impl.h
@@ -224,18 +224,15 @@ assembleBlockMatricesWithJacobian(
eps.noalias() = B * u;
- KelvinMatrixType<GlobalDim> C;
- std::unique_ptr<typename MaterialLib::Solids::MechanicsBase<
- GlobalDim>::MaterialStateVariables>
- new_state;
- std::tie(sigma_eff, new_state, C) =
- _ip_data[ip].solid_material.integrateStress(
- t, x_position, _process_data.dt, eps_prev, eps, sigma_eff_prev,
- *state);
-
- if (!new_state)
+ auto&& solution = _ip_data[ip].solid_material.integrateStress(
+ t, x_position, _process_data.dt, eps_prev, eps, sigma_eff_prev,
+ *state);
+
+ if (!solution)
OGS_FATAL("Computation of local constitutive relation failed.");
- state = std::move(new_state);
+
+ KelvinMatrixType<GlobalDim> C;
+ std::tie(sigma_eff, state, C) = std::move(*solution);
q.noalias() = - k_over_mu * (dNdx_p * p + rho_fr * gravity_vec);
@@ -337,17 +334,15 @@ computeSecondaryVariableConcreteWithBlockVectors(
eps.noalias() = B * u;
- std::unique_ptr<typename MaterialLib::Solids::MechanicsBase<
- GlobalDim>::MaterialStateVariables>
- new_state;
- std::tie(sigma_eff, new_state, ip_data.C) =
- _ip_data[ip].solid_material.integrateStress(
- t, x_position, _process_data.dt, eps_prev, eps, sigma_eff_prev,
- *state);
+ auto&& solution = _ip_data[ip].solid_material.integrateStress(
+ t, x_position, _process_data.dt, eps_prev, eps, sigma_eff_prev,
+ *state);
- if (!new_state)
+ if (!solution)
OGS_FATAL("Computation of local constitutive relation failed.");
- state = std::move(new_state);
+
+ KelvinMatrixType<GlobalDim> C;
+ std::tie(sigma_eff, state, C) = std::move(*solution);
q.noalias() = - k_over_mu * (dNdx_p * p + rho_fr * gravity_vec);
}
diff --git a/ProcessLib/LIE/SmallDeformation/LocalAssembler/SmallDeformationLocalAssemblerMatrix-impl.h b/ProcessLib/LIE/SmallDeformation/LocalAssembler/SmallDeformationLocalAssemblerMatrix-impl.h
index e34f3933147626478a15f75106302295bad10a3d..3418b593a9969cb3c903dd5a82b0cbbb1a8fad59 100644
--- a/ProcessLib/LIE/SmallDeformation/LocalAssembler/SmallDeformationLocalAssemblerMatrix-impl.h
+++ b/ProcessLib/LIE/SmallDeformation/LocalAssembler/SmallDeformationLocalAssemblerMatrix-impl.h
@@ -144,18 +144,14 @@ assembleWithJacobian(
Eigen::Map<typename BMatricesType::NodalForceVectorType const>(
local_x.data(), ShapeFunction::NPOINTS * DisplacementDim);
- KelvinMatrixType<DisplacementDim> C;
- std::unique_ptr<typename MaterialLib::Solids::MechanicsBase<
- DisplacementDim>::MaterialStateVariables>
- new_state;
- std::tie(sigma, new_state, C) =
- _ip_data[ip]._solid_material.integrateStress(
- t, x_position, _process_data.dt, eps_prev, eps, sigma_prev,
- *state);
-
- if (!new_state)
+ auto&& solution = _ip_data[ip]._solid_material.integrateStress(
+ t, x_position, _process_data.dt, eps_prev, eps, sigma_prev, *state);
+
+ if (!solution)
OGS_FATAL("Computation of local constitutive relation failed.");
- state = std::move(new_state);
+
+ KelvinMatrixType<DisplacementDim> C;
+ std::tie(sigma, state, C) = std::move(*solution);
local_b.noalias() -=
B.transpose() * sigma * detJ * wp.getWeight() * integralMeasure;
diff --git a/ProcessLib/LIE/SmallDeformation/LocalAssembler/SmallDeformationLocalAssemblerMatrixNearFracture-impl.h b/ProcessLib/LIE/SmallDeformation/LocalAssembler/SmallDeformationLocalAssemblerMatrixNearFracture-impl.h
index acaa2047718ada6915afbc487e32b12b29984f37..84b70ec46453964f98a6e7ab64a2e7cbe6f852a1 100644
--- a/ProcessLib/LIE/SmallDeformation/LocalAssembler/SmallDeformationLocalAssemblerMatrixNearFracture-impl.h
+++ b/ProcessLib/LIE/SmallDeformation/LocalAssembler/SmallDeformationLocalAssemblerMatrixNearFracture-impl.h
@@ -212,18 +212,14 @@ assembleWithJacobian(
eps.noalias() = B * nodal_total_u;
- KelvinMatrixType<DisplacementDim> C;
- std::unique_ptr<typename MaterialLib::Solids::MechanicsBase<
- DisplacementDim>::MaterialStateVariables>
- new_state;
- std::tie(sigma, new_state, C) =
- _ip_data[ip]._solid_material.integrateStress(
- t, x_position, _process_data.dt, eps_prev, eps, sigma_prev,
- *state);
-
- if (!new_state)
+ auto&& solution = _ip_data[ip]._solid_material.integrateStress(
+ t, x_position, _process_data.dt, eps_prev, eps, sigma_prev, *state);
+
+ if (!solution)
OGS_FATAL("Computation of local constitutive relation failed.");
- state = std::move(new_state);
+
+ KelvinMatrixType<DisplacementDim> C;
+ std::tie(sigma, state, C) = std::move(*solution);
// r_u = B^T * Sigma = B^T * C * B * (u+phi*[u])
// r_[u] = (phi*B)^T * Sigma = (phi*B)^T * C * B * (u+phi*[u])
diff --git a/ProcessLib/SmallDeformation/SmallDeformationFEM.h b/ProcessLib/SmallDeformation/SmallDeformationFEM.h
index dd857394f9e999d6a5892875a6f5ea70679fb9e1..e8493f15fce106d4ba992576c66eccd72ae319d1 100644
--- a/ProcessLib/SmallDeformation/SmallDeformationFEM.h
+++ b/ProcessLib/SmallDeformation/SmallDeformationFEM.h
@@ -254,18 +254,15 @@ public:
Eigen::Map<typename BMatricesType::NodalForceVectorType const>(
local_x.data(), ShapeFunction::NPOINTS * DisplacementDim);
- KelvinMatrixType<DisplacementDim> C;
- std::unique_ptr<typename MaterialLib::Solids::MechanicsBase<
- DisplacementDim>::MaterialStateVariables>
- new_state;
- std::tie(sigma, new_state, C) =
- _ip_data[ip].solid_material.integrateStress(
- t, x_position, _process_data.dt, eps_prev, eps, sigma_prev,
- *state);
-
- if (!new_state)
+ auto&& solution = _ip_data[ip].solid_material.integrateStress(
+ t, x_position, _process_data.dt, eps_prev, eps, sigma_prev,
+ *state);
+
+ if (!solution)
OGS_FATAL("Computation of local constitutive relation failed.");
- state = std::move(new_state);
+
+ KelvinMatrixType<DisplacementDim> C;
+ std::tie(sigma, state, C) = std::move(*solution);
local_b.noalias() -= B.transpose() * sigma * w;
local_Jac.noalias() += B.transpose() * C * B * w;