CrystalPlasticityStressUpdateBase.C

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
#include "CrystalPlasticityStressUpdateBase.h"
 
#include "libmesh/utility.h"
#include "libmesh/int_range.h"
#include "Conversion.h"
#include "MooseException.h"
 
InputParameters
CrystalPlasticityStressUpdateBase::validParams()
{
  InputParameters params = Material::validParams();
  params.addParam<std::string>(
      "base_name",
      "Optional parameter that allows the user to define multiple crystal plasticity mechanisms");
  params.addClassDescription(
      "Crystal Plasticity base class: handles the Newton iteration over the stress residual and "
      "calculates the Jacobian based on constitutive laws provided by inheriting classes");
 
  // The return stress increment classes are intended to be iterative materials, so must set compute
  // = false for all inheriting classes
  params.set<bool>("compute") = false;
  params.suppressParameter<bool>("compute");
 
  params.addParam<MooseEnum>(
      "crystal_lattice_type",
      MooseEnum("BCC FCC HCP", "FCC"),
      "Crystal lattice type or representative unit cell, i.e., BCC, FCC, HCP, etc.");
 
  params.addRangeCheckedParam<std::vector<Real>>(
      "unit_cell_dimension",
      std::vector<Real>{1.0, 1.0, 1.0},
      "unit_cell_dimension_size = 3",
      "The dimension of the unit cell along three directions, where a cubic unit cell is assumed "
      "for cubic crystals and a hexagonal unit cell (a, a, c) is assumed for HCP crystals. These "
      "dimensions will be taken into account while computing the slip systems."
      " Default size is 1.0 along all three directions.");
 
  params.addRequiredParam<unsigned int>(
      "number_slip_systems",
      "The total number of possible active slip systems for the crystalline material");
  params.addRequiredParam<FileName>(
      "slip_sys_file_name",
      "Name of the file containing the slip systems, one slip system per row, with the slip plane "
      "normal given before the slip plane direction.");
  params.addParam<Real>("number_cross_slip_directions",
                        0,
                        "Quanity of unique slip directions, used to determine cross slip familes");
  params.addParam<Real>("number_cross_slip_planes",
                        0,
                        "Quanity of slip planes belonging to a single cross slip direction; used "
                        "to determine cross slip families");
  params.addParam<Real>(
      "slip_increment_tolerance",
      2e-2,
      "Maximum allowable slip in an increment for each individual constitutive model");
  params.addParam<Real>(
      "stol", 1e-2, "Constitutive internal state variable relative change tolerance");
  params.addParam<Real>("resistance_tol",
                        1.0e-2,
                        "Constitutive slip system resistance relative residual tolerance for each "
                        "individual constitutive model");
  params.addParam<Real>("zero_tol",
                        1e-12,
                        "Tolerance for residual check when variable value is zero for each "
                        "individual constitutive model");
  params.addParam<bool>(
      "print_state_variable_convergence_error_messages",
      false,
      "Whether or not to print warning messages from the crystal plasticity specific convergence "
      "checks on both the constiutive model internal state variables.");
  return params;
}
 
CrystalPlasticityStressUpdateBase::CrystalPlasticityStressUpdateBase(
    const InputParameters & parameters)
  : Material(parameters),
    _base_name(isParamValid("base_name") ? getParam<std::string>("base_name") + "_" : ""),
    _crystal_lattice_type(
        getParam<MooseEnum>("crystal_lattice_type").getEnum<CrystalLatticeType>()),
    _unit_cell_dimension(getParam<std::vector<Real>>("unit_cell_dimension")),
    _number_slip_systems(getParam<unsigned int>("number_slip_systems")),
    _slip_sys_file_name(getParam<FileName>("slip_sys_file_name")),
    _number_cross_slip_directions(getParam<Real>("number_cross_slip_directions")),
    _number_cross_slip_planes(getParam<Real>("number_cross_slip_planes")),
 
    _rel_state_var_tol(getParam<Real>("stol")),
    _slip_incr_tol(getParam<Real>("slip_increment_tolerance")),
    _resistance_tol(getParam<Real>("resistance_tol")),
    _zero_tol(getParam<Real>("zero_tol")),
 
    _slip_resistance(declareProperty<std::vector<Real>>(_base_name + "slip_resistance")),
    _slip_resistance_old(getMaterialPropertyOld<std::vector<Real>>(_base_name + "slip_resistance")),
    _slip_increment(declareProperty<std::vector<Real>>(_base_name + "slip_increment")),
 
    _slip_direction(_number_slip_systems),
    _slip_plane_normal(_number_slip_systems),
    _flow_direction(declareProperty<std::vector<RankTwoTensor>>(_base_name + "flow_direction")),
    _tau(declareProperty<std::vector<Real>>(_base_name + "applied_shear_stress")),
    _print_convergence_message(getParam<bool>("print_state_variable_convergence_error_messages"))
{
  getSlipSystems();
  sortCrossSlipFamilies();
 
  if (parameters.isParamSetByUser("number_cross_slip_directions"))
    _calculate_cross_slip = true;
  else
    _calculate_cross_slip = false;
}
 
void
CrystalPlasticityStressUpdateBase::initQpStatefulProperties()
{
  setMaterialVectorSize();
}
 
void
CrystalPlasticityStressUpdateBase::setMaterialVectorSize()
{
  _tau[_qp].resize(_number_slip_systems);
  _flow_direction[_qp].resize(_number_slip_systems);
  for (const auto i : make_range(_number_slip_systems))
  {
    _flow_direction[_qp][i].zero();
    _tau[_qp][i] = 0.0;
  }
 
  _slip_resistance[_qp].resize(_number_slip_systems);
  _slip_increment[_qp].resize(_number_slip_systems);
}
 
void
CrystalPlasticityStressUpdateBase::getSlipSystems()
{
  bool orthonormal_error = false;
 
  // read in the slip system data from auxiliary text file
  MooseUtils::DelimitedFileReader _reader(_slip_sys_file_name);
  _reader.setFormatFlag(MooseUtils::DelimitedFileReader::FormatFlag::ROWS);
  _reader.read();
 
  // check the size of the input
  if (_reader.getData().size() != _number_slip_systems)
    paramError(
        "number_slip_systems",
        "The number of rows in the slip system file should match the number of slip system.");
 
  for (const auto i : make_range(_number_slip_systems))
  {
    // initialize to zero
    _slip_direction[i].zero();
    _slip_plane_normal[i].zero();
  }
 
  if (_crystal_lattice_type == CrystalLatticeType::HCP)
    transformHexagonalMillerBravaisSlipSystems(_reader);
  else if (_crystal_lattice_type == CrystalLatticeType::BCC ||
           _crystal_lattice_type == CrystalLatticeType::FCC)
  {
    for (const auto i : make_range(_number_slip_systems))
    {
      // directly grab the raw data and scale it by the unit cell dimension
      for (const auto j : index_range(_reader.getData(i)))
      {
        if (j < LIBMESH_DIM)
          _slip_plane_normal[i](j) = _reader.getData(i)[j] / _unit_cell_dimension[j];
        else
          _slip_direction[i](j - LIBMESH_DIM) =
              _reader.getData(i)[j] * _unit_cell_dimension[j - LIBMESH_DIM];
      }
    }
  }
 
  for (const auto i : make_range(_number_slip_systems))
  {
    // normalize
    _slip_plane_normal[i] /= _slip_plane_normal[i].norm();
    _slip_direction[i] /= _slip_direction[i].norm();
 
    if (_crystal_lattice_type != CrystalLatticeType::HCP)
    {
      const auto magnitude = _slip_plane_normal[i] * _slip_direction[i];
      if (std::abs(magnitude) > libMesh::TOLERANCE)
      {
        orthonormal_error = true;
        break;
      }
    }
  }
 
  if (orthonormal_error)
    mooseError("CrystalPlasticityStressUpdateBase Error: The slip system file contains a slip "
               "direction and plane normal pair that are not orthonormal in the Cartesian "
               "coordinate system.");
}
 
void
CrystalPlasticityStressUpdateBase::transformHexagonalMillerBravaisSlipSystems(
    const MooseUtils::DelimitedFileReader & reader)
{
  const unsigned int miller_bravais_indices = 4;
  RealVectorValue temporary_slip_direction, temporary_slip_plane;
  // temporary_slip_plane.resize(LIBMESH_DIM);
  // temporary_slip_direction.resize(LIBMESH_DIM);
 
  if (_unit_cell_dimension[0] != _unit_cell_dimension[1] ||
      _unit_cell_dimension[0] == _unit_cell_dimension[2])
    mooseError("CrystalPlasticityStressUpdateBase Error: The specified unit cell dimensions are "
               "not consistent with expectations for "
               "HCP crystal hexagonal lattices.");
  else if (reader.getData(0).size() != miller_bravais_indices * 2)
    mooseError("CrystalPlasticityStressUpdateBase Error: The number of entries in the first row of "
               "the slip system file is not consistent with the expectations for the 4-index "
               "Miller-Bravais assumption for HCP crystals. This file should represent both the "
               "slip plane normal and the slip direction with 4-indices each.");
 
  // set up the tranformation matrices
  RankTwoTensor transform_matrix;
  transform_matrix.zero();
  transform_matrix(0, 0) = 1.0 / _unit_cell_dimension[0];
  transform_matrix(1, 0) = 1.0 / (_unit_cell_dimension[0] * std::sqrt(3.0));
  transform_matrix(1, 1) = 2.0 / (_unit_cell_dimension[0] * std::sqrt(3.0));
  transform_matrix(2, 2) = 1.0 / (_unit_cell_dimension[2]);
 
  for (const auto i : make_range(_number_slip_systems))
  {
    // read in raw data from file and store in the temporary vectors
    for (const auto j : index_range(reader.getData(i)))
    {
      // Check that the slip plane normal indices of the basal plane sum to zero for consistency
      Real basal_pl_sum = 0.0;
      for (const auto k : make_range(Moose::dim))
        basal_pl_sum += reader.getData(i)[k];
 
      if (basal_pl_sum > _zero_tol)
        mooseError(
            "CrystalPlasticityStressUpdateBase Error: The specified HCP basal plane Miller-Bravais "
            "indices do not sum to zero. Check the values supplied in the associated text file.");
 
      // Check that the slip direction indices of the basal plane sum to zero for consistency
      Real basal_dir_sum = 0.0;
      for (const auto k : make_range(miller_bravais_indices, miller_bravais_indices + LIBMESH_DIM))
        basal_dir_sum += reader.getData(i)[k];
 
      if (basal_dir_sum > _zero_tol)
        mooseError("CrystalPlasticityStressUpdateBase Error: The specified HCP slip direction "
                   "Miller-Bravais indices in the basal plane (U, V, and T) do not sum to zero "
                   "within the user specified tolerance (try loosing zero_tol if using the default "
                   "value). Check the values supplied in the associated text file.");
 
      if (j < miller_bravais_indices)
      {
        // Planes are directly copied over, per a_1 = x convention used here:
        // Store the first two indices for the basal plane, (h and k), and drop
        // the redundant third basal plane index (i)
        if (j < 2)
          temporary_slip_plane(j) = reader.getData(i)[j];
        // Store the c-axis index as the third entry in the orthorombic index convention
        else if (j == 3)
          temporary_slip_plane(j - 1) = reader.getData(i)[j];
      }
      else
      {
        const auto direction_j = j - miller_bravais_indices;
        // Store the first two indices for the slip direction in the basal plane,
        //(U, V), and drop the redundant third basal plane index (T)
        if (direction_j < 2)
          temporary_slip_direction(direction_j) = reader.getData(i)[j];
        // Store the c-axis index as the third entry in the orthorombic index convention
        else if (direction_j == 3)
          temporary_slip_direction(direction_j - 1) = reader.getData(i)[j];
      }
    }
 
    // perform transformation calculation
    _slip_direction[i] = transform_matrix * temporary_slip_direction;
    _slip_plane_normal[i] = transform_matrix * temporary_slip_plane;
  }
}
 
void
CrystalPlasticityStressUpdateBase::sortCrossSlipFamilies()
{
  if (_number_cross_slip_directions == 0)
  {
    _cross_slip_familes.resize(0);
    return;
  }
 
  // If cross slip does occur, then set up the system of vectors for the families
  _cross_slip_familes.resize(_number_cross_slip_directions);
  // and set the first index of each inner vector
  for (unsigned int i = 0; i < _number_cross_slip_directions; ++i)
    _cross_slip_familes[i].resize(1);
 
  // Sort the index of the slip system based vectors into separte families
  unsigned int family_counter = 1;
  _cross_slip_familes[0][0] = 0;
 
  for (unsigned int i = 1; i < _number_slip_systems; ++i)
  {
    for (unsigned int j = 0; j < family_counter; ++j)
    {
      // check to see if the slip system direction i matches any of the existing slip directions
      // First calculate the dot product
      Real dot_product = 0.0;
      for (const auto k : make_range(Moose::dim))
      {
        unsigned int check_family_index = _cross_slip_familes[j][0];
        dot_product += std::abs(_slip_direction[check_family_index](k) - _slip_direction[i](k));
      }
      // Then check if the dot product is one, if yes, add to family and break
      if (MooseUtils::absoluteFuzzyEqual(dot_product, 0.0))
      {
        _cross_slip_familes[j].push_back(i);
        if (_cross_slip_familes[j].size() > _number_cross_slip_planes)
          mooseError(
              "Exceeded the number of cross slip planes allowed in a single cross slip family");
 
        break; // exit the loop over the exisiting cross slip families and move to the next slip
               // direction
      }
      // The slip system in question does not belong to an existing family
      else if (j == (family_counter - 1) && !MooseUtils::absoluteFuzzyEqual(dot_product, 0.0))
      {
        if (family_counter > _number_cross_slip_directions)
          mooseError("Exceeds the number of cross slip directions specified for this material");
 
        _cross_slip_familes[family_counter][0] = i;
        family_counter++;
        break;
      }
    }
  }
 
  if (_print_convergence_message)
  {
    mooseWarning("Checking the slip system ordering now:");
    for (unsigned int i = 0; i < _number_cross_slip_directions; ++i)
    {
      Moose::out << "In cross slip family " << i << std::endl;
      for (unsigned int j = 0; j < _number_cross_slip_planes; ++j)
        Moose::out << " is the slip direction number " << _cross_slip_familes[i][j] << std::endl;
    }
  }
}
 
unsigned int
CrystalPlasticityStressUpdateBase::identifyCrossSlipFamily(const unsigned int index)
{
  for (unsigned int i = 0; i < _number_cross_slip_directions; ++i)
    for (unsigned int j = 0; j < _number_cross_slip_planes; ++j)
      if (_cross_slip_familes[i][j] == index)
        return i;
 
  // Should never reach this statement
  mooseError("The supplied slip system index is not among the slip system families sorted.");
}
 
void
CrystalPlasticityStressUpdateBase::calculateFlowDirection(const RankTwoTensor & crysrot)
{
  calculateSchmidTensor(
      _number_slip_systems, _slip_plane_normal, _slip_direction, _flow_direction[_qp], crysrot);
}
 
void
CrystalPlasticityStressUpdateBase::calculateSchmidTensor(
    const unsigned int & number_slip_systems,
    const std::vector<RealVectorValue> & plane_normal_vector,
    const std::vector<RealVectorValue> & direction_vector,
    std::vector<RankTwoTensor> & schmid_tensor,
    const RankTwoTensor & crysrot)
{
  std::vector<RealVectorValue> local_direction_vector, local_plane_normal;
  local_direction_vector.resize(number_slip_systems);
  local_plane_normal.resize(number_slip_systems);
 
  // Update slip direction and normal with crystal orientation
  for (const auto i : make_range(_number_slip_systems))
  {
    local_direction_vector[i].zero();
    local_plane_normal[i].zero();
 
    for (const auto j : make_range(Moose::dim))
      for (const auto k : make_range(Moose::dim))
      {
        local_direction_vector[i](j) =
            local_direction_vector[i](j) + crysrot(j, k) * direction_vector[i](k);
 
        local_plane_normal[i](j) =
            local_plane_normal[i](j) + crysrot(j, k) * plane_normal_vector[i](k);
      }
 
    // Calculate Schmid tensor
    for (const auto j : make_range(Moose::dim))
      for (const auto k : make_range(Moose::dim))
      {
        schmid_tensor[i](j, k) = local_direction_vector[i](j) * local_plane_normal[i](k);
      }
  }
}
 
void
CrystalPlasticityStressUpdateBase::calculateShearStress(
    const RankTwoTensor & pk2,
    const RankTwoTensor & inverse_eigenstrain_deformation_grad,
    const unsigned int & num_eigenstrains)
{
  if (!num_eigenstrains)
  {
    for (const auto i : make_range(_number_slip_systems))
      _tau[_qp][i] = pk2.doubleContraction(_flow_direction[_qp][i]);
 
    return;
  }
 
  RankTwoTensor eigenstrain_deformation_grad = inverse_eigenstrain_deformation_grad.inverse();
  for (const auto i : make_range(_number_slip_systems))
  {
    // compute PK2_hat using deformation gradient
    RankTwoTensor pk2_hat = eigenstrain_deformation_grad.det() *
                            eigenstrain_deformation_grad.transpose() * pk2 *
                            inverse_eigenstrain_deformation_grad.transpose();
    _tau[_qp][i] = pk2_hat.doubleContraction(_flow_direction[_qp][i]);
  }
}
 
void
CrystalPlasticityStressUpdateBase::calculateTotalPlasticDeformationGradientDerivative(
    RankFourTensor & dfpinvdpk2,
    const RankTwoTensor & inverse_plastic_deformation_grad_old,
    const RankTwoTensor & inverse_eigenstrain_deformation_grad_old,
    const unsigned int & num_eigenstrains)
{
  std::vector<Real> dslip_dtau(_number_slip_systems, 0.0);
  std::vector<RankTwoTensor> dtaudpk2(_number_slip_systems);
  std::vector<RankTwoTensor> dfpinvdslip(_number_slip_systems);
 
  calculateConstitutiveSlipDerivative(dslip_dtau);
 
  for (const auto j : make_range(_number_slip_systems))
  {
    if (num_eigenstrains)
    {
      RankTwoTensor eigenstrain_deformation_grad_old =
          inverse_eigenstrain_deformation_grad_old.inverse();
      dtaudpk2[j] = eigenstrain_deformation_grad_old.det() * eigenstrain_deformation_grad_old *
                    _flow_direction[_qp][j] * inverse_eigenstrain_deformation_grad_old;
    }
    else
      dtaudpk2[j] = _flow_direction[_qp][j];
    dfpinvdslip[j] = -inverse_plastic_deformation_grad_old * _flow_direction[_qp][j];
    dfpinvdpk2 += (dfpinvdslip[j] * dslip_dtau[j] * _substep_dt).outerProduct(dtaudpk2[j]);
  }
}
 
void
CrystalPlasticityStressUpdateBase::calculateEquivalentSlipIncrement(
    RankTwoTensor & equivalent_slip_increment)
{
  // Sum up the slip increments to find the equivalent plastic strain due to slip
  for (const auto i : make_range(_number_slip_systems))
    equivalent_slip_increment += _flow_direction[_qp][i] * _slip_increment[_qp][i] * _substep_dt;
}
 
void
CrystalPlasticityStressUpdateBase::setQp(const unsigned int & qp)
{
  _qp = qp;
}
 
void
CrystalPlasticityStressUpdateBase::setSubstepDt(const Real & substep_dt)
{
  _substep_dt = substep_dt;
}
 
bool
CrystalPlasticityStressUpdateBase::isConstitutiveStateVariableConverged(
    const std::vector<Real> & current_var,
    const std::vector<Real> & var_before_update,
    const std::vector<Real> & previous_substep_var,
    const Real & tolerance)
{
  // sometimes the state variable size may not equal to the number of slip systems
  unsigned int sz = current_var.size();
  mooseAssert(current_var.size() == sz, "Current variable size does not match");
  mooseAssert(var_before_update.size() == sz, "Variable before update size does not match");
  mooseAssert(previous_substep_var.size() == sz, "Previous substep variable size does not match");
 
  bool is_converged = true;
 
  Real diff_val = 0.0;
  Real abs_prev_substep_val = 0.0;
  for (const auto i : make_range(sz))
  {
    diff_val = std::abs(var_before_update[i] - current_var[i]);
    abs_prev_substep_val = std::abs(previous_substep_var[i]);
 
    // set to false if the state variable is not converged
    if (abs_prev_substep_val < _zero_tol && diff_val > _zero_tol)
      is_converged = false;
    else if (abs_prev_substep_val > _zero_tol && diff_val > tolerance * abs_prev_substep_val)
      is_converged = false;
  }
  return is_converged;
}