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[GeoMechanicsApplication] Removed the strain calculation from geo con…
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…stitutive laws (#12719)

* Removed the strain calculation from the linear elastic laws in geomechanics
* Removed the strain calculation from the geo UDSM laws
* Removed strain calculation of the UMAT constitutive laws in geo
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@rfaasse
rfaasse authored Oct 4, 2024
1 parent bd503d9 commit 3e10ca1
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Showing 26 changed files with 26 additions and 288 deletions.
18 changes: 0 additions & 18 deletions applications/GeoMechanicsApplication/custom_constitutive/elastic_isotropic_K0_3d_law.cpp
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Expand Up @@ -117,22 +117,4 @@ void ElasticIsotropicK03DLaw::CalculatePK2Stress(const Vector& rS
}
}

void ElasticIsotropicK03DLaw::CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector)
{
const SizeType space_dimension = this->WorkingSpaceDimension();

// 1.-Compute total deformation gradient
const Matrix& F = rValues.GetDeformationGradientF();
KRATOS_DEBUG_ERROR_IF(F.size1() != space_dimension || F.size2() != space_dimension)
<< "expected size of F " << space_dimension << "x" << space_dimension << ", got "
<< F.size1() << "x" << F.size2() << std::endl;

Matrix E_tensor = prod(trans(F), F);
for (unsigned int i = 0; i < space_dimension; ++i)
E_tensor(i, i) -= 1.0;
E_tensor *= 0.5;

noalias(rStrainVector) = MathUtils<double>::StrainTensorToVector(E_tensor);
}

} // Namespace Kratos
7 changes: 0 additions & 7 deletions applications/GeoMechanicsApplication/custom_constitutive/elastic_isotropic_K0_3d_law.h
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Original file line number Diff line number Diff line change
Expand Up @@ -138,13 +138,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) ElasticIsotropicK03DLaw : public Geo
Vector& rStressVector,
ConstitutiveLaw::Parameters& rValues) override;

/**
* @brief It calculates the strain vector
* @param rValues The internal values of the law
* @param rStrainVector The strain vector in Voigt notation
*/
void CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector) override;

///@}

private:
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24 changes: 9 additions & 15 deletions applications/GeoMechanicsApplication/custom_constitutive/linear_elastic_law.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -52,21 +52,19 @@ void GeoLinearElasticLaw::CalculateMaterialResponsePK2(ConstitutiveLaw::Paramete

const Flags& r_options = rValues.GetOptions();

Vector& r_strain_vector = rValues.GetStrainVector();
KRATOS_DEBUG_ERROR_IF(r_options.IsNot(ConstitutiveLaw::USE_ELEMENT_PROVIDED_STRAIN))
<< "The GeoLinearElasticLaw needs an element provided strain" << std::endl;

// NOTE: SINCE THE ELEMENT IS IN SMALL STRAINS WE CAN USE ANY STRAIN MEASURE. HERE EMPLOYING THE CAUCHY_GREEN
if (r_options.IsNot(ConstitutiveLaw::USE_ELEMENT_PROVIDED_STRAIN)) {
CalculateCauchyGreenStrain(rValues, r_strain_vector);
}
KRATOS_ERROR_IF(!rValues.IsSetStrainVector() || rValues.GetStrainVector().size() != GetStrainSize())
<< "Constitutive laws in the geomechanics application need a valid provided strain"
<< std::endl;

if (r_options.Is(ConstitutiveLaw::COMPUTE_CONSTITUTIVE_TENSOR)) {
Matrix& r_constitutive_matrix = rValues.GetConstitutiveMatrix();
CalculateElasticMatrix(r_constitutive_matrix, rValues);
CalculateElasticMatrix(rValues.GetConstitutiveMatrix(), rValues);
}

if (r_options.Is(ConstitutiveLaw::COMPUTE_STRESS)) {
Vector& r_stress_vector = rValues.GetStressVector();
CalculatePK2Stress(r_strain_vector, r_stress_vector, rValues);
CalculatePK2Stress(rValues.GetStrainVector(), rValues.GetStressVector(), rValues);
}

KRATOS_CATCH("")
Expand All @@ -89,7 +87,6 @@ double& GeoLinearElasticLaw::CalculateValue(ConstitutiveLaw::Parameters& rParame
if (rThisVariable == STRAIN_ENERGY) {
Vector& r_strain_vector = rParameterValues.GetStrainVector();
Vector& r_stress_vector = rParameterValues.GetStressVector();
this->CalculateCauchyGreenStrain(rParameterValues, r_strain_vector);
this->CalculatePK2Stress(r_strain_vector, r_stress_vector, rParameterValues);

rValue = 0.5 * inner_prod(r_strain_vector, r_stress_vector); // Strain energy = 0.5*E:C:E
Expand All @@ -102,11 +99,8 @@ Vector& GeoLinearElasticLaw::CalculateValue(ConstitutiveLaw::Parameters& rParame
const Variable<Vector>& rThisVariable,
Vector& rValue)
{
if (rThisVariable == STRAIN || rThisVariable == GREEN_LAGRANGE_STRAIN_VECTOR ||
rThisVariable == ALMANSI_STRAIN_VECTOR) {
this->CalculateCauchyGreenStrain(rParameterValues, rValue);
} else if (rThisVariable == STRESSES || rThisVariable == CAUCHY_STRESS_VECTOR ||
rThisVariable == KIRCHHOFF_STRESS_VECTOR || rThisVariable == PK2_STRESS_VECTOR) {
if (rThisVariable == STRESSES || rThisVariable == CAUCHY_STRESS_VECTOR ||
rThisVariable == KIRCHHOFF_STRESS_VECTOR || rThisVariable == PK2_STRESS_VECTOR) {
// Get Values to compute the constitutive law:
Flags& r_flags = rParameterValues.GetOptions();

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1 change: 0 additions & 1 deletion applications/GeoMechanicsApplication/custom_constitutive/linear_elastic_law.h
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Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) GeoLinearElasticLaw : public Constit

protected:
virtual void CalculateElasticMatrix(Matrix& rConstitutiveMatrix, ConstitutiveLaw::Parameters& rValues) = 0;
virtual void CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector) = 0;
virtual void CalculatePK2Stress(const Vector& rStrainVector,
Vector& rStressVector,
ConstitutiveLaw::Parameters& rValues) = 0;
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20 changes: 0 additions & 20 deletions ...ations/GeoMechanicsApplication/custom_constitutive/linear_elastic_plane_strain_K0_law.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -132,24 +132,4 @@ void LinearPlaneStrainK0Law::CalculatePK2Stress(const Vector& rSt
KRATOS_CATCH("")
}

void LinearPlaneStrainK0Law::CalculateCauchyGreenStrain(Parameters& rValues, Vector& rStrainVector)
{
// 1.-Compute total deformation gradient
const Matrix& F = rValues.GetDeformationGradientF();

// for shells/membranes in case the DeformationGradient is of size 3x3
BoundedMatrix<double, 2, 2> F2x2;
for (unsigned int i = 0; i < 2; ++i)
for (unsigned int j = 0; j < 2; ++j)
F2x2(i, j) = F(i, j);

Matrix E_tensor = prod(trans(F2x2), F2x2);

for (unsigned int i = 0; i < 2; ++i)
E_tensor(i, i) -= 1.0;

E_tensor *= 0.5;
noalias(rStrainVector) = MathUtils<double>::StrainTensorToVector(E_tensor);
}

} // Namespace Kratos
7 changes: 0 additions & 7 deletions ...ications/GeoMechanicsApplication/custom_constitutive/linear_elastic_plane_strain_K0_law.h
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Original file line number Diff line number Diff line change
Expand Up @@ -159,13 +159,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) LinearPlaneStrainK0Law : public GeoL
Vector& rStressVector,
ConstitutiveLaw::Parameters& rValues) override;

/**
* @brief It calculates the strain vector
* @param rValues The internal values of the law
* @param rStrainVector The strain vector in Voigt notation
*/
void CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector) override;

///@}

private:
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21 changes: 0 additions & 21 deletions ...ations/GeoMechanicsApplication/custom_constitutive/linear_elastic_plane_stress_2D_law.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -76,25 +76,4 @@ void GeoLinearElasticPlaneStress2DLaw::CalculatePK2Stress(const Vector& rStrainV
noalias(rStressVector) = prod(C, rStrainVector);
}

void GeoLinearElasticPlaneStress2DLaw::CalculateCauchyGreenStrain(Parameters& rValues, Vector& rStrainVector)
{
// 1.-Compute total deformation gradient
const Matrix& F = rValues.GetDeformationGradientF();

// for shells/membranes in case the DeformationGradient is of size 3x3
BoundedMatrix<double, 2, 2> F2x2;
for (unsigned int i = 0; i < 2; ++i)
for (unsigned int j = 0; j < 2; ++j)
F2x2(i, j) = F(i, j);

Matrix E_tensor = prod(trans(F2x2), F2x2);

for (unsigned int i = 0; i < 2; ++i)
E_tensor(i, i) -= 1.0;

E_tensor *= 0.5;

noalias(rStrainVector) = MathUtils<double>::StrainTensorToVector(E_tensor);
}

} // namespace Kratos
7 changes: 0 additions & 7 deletions ...ications/GeoMechanicsApplication/custom_constitutive/linear_elastic_plane_stress_2D_law.h
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Original file line number Diff line number Diff line change
Expand Up @@ -152,13 +152,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) GeoLinearElasticPlaneStress2DLaw : p
Vector& rStressVector,
ConstitutiveLaw::Parameters& rValues) override;

/**
* It calculates the strain vector
* @param rValues The internal values of the law
* @param rStrainVector The strain vector in Voigt notation
*/
void CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector) override;

///@}

private:
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7 changes: 0 additions & 7 deletions ...ations/GeoMechanicsApplication/custom_constitutive/small_strain_udsm_2D_interface_law.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -90,13 +90,6 @@ indexStress3D SmallStrainUDSM2DInterfaceLaw::getIndex3D(const indexStress2DInter
}
}

void SmallStrainUDSM2DInterfaceLaw::CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues,
Vector& rStrainVector)
{
KRATOS_ERROR << "CalculateCauchyGreenStrain is not implemented in SmallStrainUDSM2DInterfaceLaw"
<< std::endl;
}

Vector& SmallStrainUDSM2DInterfaceLaw::GetValue(const Variable<Vector>& rThisVariable, Vector& rValue)
{
if (rThisVariable == STATE_VARIABLES) {
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7 changes: 0 additions & 7 deletions ...ations/GeoMechanicsApplication/custom_constitutive/small_strain_udsm_2D_interface_law.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -100,13 +100,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) SmallStrainUDSM2DInterfaceLaw : publ
*/
StressMeasure GetStressMeasure() override { return StressMeasure_Cauchy; }

/**
* @brief It calculates the strain vector
* @param rValues The internal values of the law
* @param rStrainVector The strain vector in Voigt notation
*/
void CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector) override;

///@}
///@name Inquiry
///@{
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21 changes: 0 additions & 21 deletions ...ons/GeoMechanicsApplication/custom_constitutive/small_strain_udsm_2D_plane_strain_law.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -84,27 +84,6 @@ void SmallStrainUDSM2DPlaneStrainLaw::CopyConstitutiveMatrix(ConstitutiveLaw::Pa
KRATOS_CATCH("")
}

void SmallStrainUDSM2DPlaneStrainLaw::CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues,
Vector& rStrainVector)
{
// 1.-Compute total deformation gradient
const Matrix& F = rValues.GetDeformationGradientF();

// for shells/membranes in case the DeformationGradient is of size 3x3
BoundedMatrix<double, 2, 2> F2x2;
for (unsigned int i = 0; i < 2; ++i)
for (unsigned int j = 0; j < 2; ++j)
F2x2(i, j) = F(i, j);

Matrix E_tensor = prod(trans(F2x2), F2x2);

for (unsigned int i = 0; i < 2; ++i)
E_tensor(i, i) -= 1.0;

E_tensor *= 0.5;
noalias(rStrainVector) = MathUtils<double>::StrainTensorToVector(E_tensor);
}

Vector& SmallStrainUDSM2DPlaneStrainLaw::GetValue(const Variable<Vector>& rThisVariable, Vector& rValue)
{
if (rThisVariable == STATE_VARIABLES) {
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7 changes: 0 additions & 7 deletions ...ons/GeoMechanicsApplication/custom_constitutive/small_strain_udsm_2D_plane_strain_law.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -100,13 +100,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) SmallStrainUDSM2DPlaneStrainLaw : pu
*/
StressMeasure GetStressMeasure() override { return StressMeasure_Cauchy; }

/**
* @brief It calculates the strain vector
* @param rValues The internal values of the law
* @param rStrainVector The strain vector in Voigt notation
*/
void CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector) override;

///@}
///@name Inquiry
///@{
Expand Down
7 changes: 0 additions & 7 deletions ...ations/GeoMechanicsApplication/custom_constitutive/small_strain_udsm_3D_interface_law.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -101,13 +101,6 @@ indexStress3D SmallStrainUDSM3DInterfaceLaw::getIndex3D(const indexStress3DInter
}
}

void SmallStrainUDSM3DInterfaceLaw::CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues,
Vector& rStrainVector)
{
KRATOS_ERROR << "CalculateCauchyGreenStrain is not implemented in SmallStrainUDSM3DInterfaceLaw"
<< std::endl;
}

Vector& SmallStrainUDSM3DInterfaceLaw::GetValue(const Variable<Vector>& rThisVariable, Vector& rValue)
{
if (rThisVariable == STATE_VARIABLES) {
Expand Down
7 changes: 0 additions & 7 deletions ...ations/GeoMechanicsApplication/custom_constitutive/small_strain_udsm_3D_interface_law.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -99,13 +99,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) SmallStrainUDSM3DInterfaceLaw : publ
*/
StressMeasure GetStressMeasure() override { return StressMeasure_Cauchy; }

/**
* @brief It calculates the strain vector
* @param rValues The internal values of the law
* @param rStrainVector The strain vector in Voigt notation
*/
void CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector) override;

///@}
///@name Inquiry
///@{
Expand Down
37 changes: 8 additions & 29 deletions applications/GeoMechanicsApplication/custom_constitutive/small_strain_udsm_3D_law.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -588,11 +588,12 @@ void SmallStrainUDSM3DLaw::CalculateMaterialResponseCauchy(ConstitutiveLaw::Para
// Get Values to compute the constitutive law:
const Flags& rOptions = rValues.GetOptions();

// NOTE: SINCE THE ELEMENT IS IN SMALL STRAINS WE CAN USE ANY STRAIN MEASURE. HERE EMPLOYING THE CAUCHY_GREEN
if (rOptions.IsNot(ConstitutiveLaw::USE_ELEMENT_PROVIDED_STRAIN)) {
Vector& rStrainVector = rValues.GetStrainVector();
CalculateCauchyGreenStrain(rValues, rStrainVector);
}
KRATOS_DEBUG_ERROR_IF(rOptions.IsNot(ConstitutiveLaw::USE_ELEMENT_PROVIDED_STRAIN))
<< "The GeoLinearElasticLaw needs an element provided strain" << std::endl;

KRATOS_ERROR_IF(!rValues.IsSetStrainVector() || rValues.GetStrainVector().size() != GetStrainSize())
<< "Constitutive laws in the geomechanics application need a valid provided strain"
<< std::endl;

if (rOptions.Is(ConstitutiveLaw::COMPUTE_CONSTITUTIVE_TENSOR)) {
// Constitutive matrix (D matrix)
Expand Down Expand Up @@ -815,31 +816,12 @@ void SmallStrainUDSM3DLaw::UpdateInternalStrainVectorFinalized(ConstitutiveLaw::
this->SetInternalStrainVector(rStrainVector);
}

void SmallStrainUDSM3DLaw::CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector)
{
const SizeType space_dimension = this->WorkingSpaceDimension();

//-Compute total deformation gradient
const Matrix& F = rValues.GetDeformationGradientF();
KRATOS_DEBUG_ERROR_IF(F.size1() != space_dimension || F.size2() != space_dimension)
<< "expected size of F " << space_dimension << "x" << space_dimension << ", got "
<< F.size1() << "x" << F.size2() << std::endl;

Matrix E_tensor = prod(trans(F), F);
for (unsigned int i = 0; i < space_dimension; ++i)
E_tensor(i, i) -= 1.0;
E_tensor *= 0.5;

noalias(rStrainVector) = MathUtils<double>::StrainTensorToVector(E_tensor);
}

double& SmallStrainUDSM3DLaw::CalculateValue(ConstitutiveLaw::Parameters& rParameterValues,
const Variable<double>& rThisVariable,
double& rValue)
{
if (rThisVariable == STRAIN_ENERGY) {
Vector& rStrainVector = rParameterValues.GetStrainVector();
this->CalculateCauchyGreenStrain(rParameterValues, rStrainVector);
Vector& rStressVector = rParameterValues.GetStressVector();
this->CalculateStress(rParameterValues, rStressVector);

Expand All @@ -852,11 +834,8 @@ Vector& SmallStrainUDSM3DLaw::CalculateValue(ConstitutiveLaw::Parameters& rParam
const Variable<Vector>& rThisVariable,
Vector& rValue)
{
if (rThisVariable == STRAIN || rThisVariable == GREEN_LAGRANGE_STRAIN_VECTOR ||
rThisVariable == ALMANSI_STRAIN_VECTOR) {
this->CalculateCauchyGreenStrain(rParameterValues, rValue);
} else if (rThisVariable == STRESSES || rThisVariable == CAUCHY_STRESS_VECTOR ||
rThisVariable == KIRCHHOFF_STRESS_VECTOR || rThisVariable == PK2_STRESS_VECTOR) {
if (rThisVariable == STRESSES || rThisVariable == CAUCHY_STRESS_VECTOR ||
rThisVariable == KIRCHHOFF_STRESS_VECTOR || rThisVariable == PK2_STRESS_VECTOR) {
// Get Values to compute the constitutive law:
Flags& rFlags = rParameterValues.GetOptions();

Expand Down
7 changes: 0 additions & 7 deletions applications/GeoMechanicsApplication/custom_constitutive/small_strain_udsm_3D_law.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -284,13 +284,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) SmallStrainUDSM3DLaw : public Consti
void InitializeMaterialResponsePK2(ConstitutiveLaw::Parameters& rValues) override;
void InitializeMaterialResponseKirchhoff(ConstitutiveLaw::Parameters& rValues) override;

/**
* @brief It calculates the strain vector
* @param rValues The internal values of the law
* @param rStrainVector The strain vector in Voigt notation
*/
virtual void CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector);

/**
* This can be used in order to reset all internal variables of the
* constitutive law (e.g. if a model should be reset to its reference state)
Expand Down
7 changes: 0 additions & 7 deletions ...ations/GeoMechanicsApplication/custom_constitutive/small_strain_umat_2D_interface_law.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -86,13 +86,6 @@ indexStress3D SmallStrainUMAT2DInterfaceLaw::getIndex3D(indexStress2DInterface i
}
}

void SmallStrainUMAT2DInterfaceLaw::CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues,
Vector& rStrainVector)
{
KRATOS_ERROR << "CalculateCauchyGreenStrain is not implemented in SmallStrainUMAT2DInterfaceLaw"
<< std::endl;
}

Vector& SmallStrainUMAT2DInterfaceLaw::GetValue(const Variable<Vector>& rThisVariable, Vector& rValue)
{
if (rThisVariable == STATE_VARIABLES) {
Expand Down
7 changes: 0 additions & 7 deletions ...ations/GeoMechanicsApplication/custom_constitutive/small_strain_umat_2D_interface_law.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -98,13 +98,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) SmallStrainUMAT2DInterfaceLaw : publ
*/
StressMeasure GetStressMeasure() override { return StressMeasure_Cauchy; }

/**
* @brief It calculates the strain vector
* @param rValues The internal values of the law
* @param rStrainVector The strain vector in Voigt notation
*/
void CalculateCauchyGreenStrain(ConstitutiveLaw::Parameters& rValues, Vector& rStrainVector) override;

///@}
///@name Inquiry
///@{
Expand Down
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