Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://mooseframework.inl.gov
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #include "ComputeStrainBase.h"
      11             : #include "MooseMesh.h"
      12             : #include "Assembly.h"
      13             : 
      14             : InputParameters
      15       26282 : ComputeStrainBase::validParams()
      16             : {
      17       26282 :   InputParameters params = Material::validParams();
      18       52564 :   params.addRequiredCoupledVar(
      19             :       "displacements",
      20             :       "The displacements appropriate for the simulation geometry and coordinate system");
      21       52564 :   params.addParam<std::string>("base_name",
      22             :                                "Optional parameter that allows the user to define "
      23             :                                "multiple mechanics material systems on the same "
      24             :                                "block, i.e. for multiple phases");
      25       52564 :   params.addParam<bool>(
      26       52564 :       "volumetric_locking_correction", false, "Flag to correct volumetric locking");
      27       52564 :   params.addParam<std::vector<MaterialPropertyName>>(
      28             :       "eigenstrain_names", {}, "List of eigenstrains to be applied in this strain calculation");
      29       52564 :   params.addParam<MaterialPropertyName>("global_strain",
      30             :                                         "Optional material property holding a global strain "
      31             :                                         "tensor applied to the mesh as a whole");
      32       26282 :   params.suppressParameter<bool>("use_displaced_mesh");
      33       26282 :   return params;
      34           0 : }
      35             : 
      36       19698 : ComputeStrainBase::ComputeStrainBase(const InputParameters & parameters)
      37             :   : DerivativeMaterialInterface<Material>(parameters),
      38       19698 :     _ndisp(coupledComponents("displacements")),
      39       19698 :     _disp(coupledValues("displacements")),
      40       19698 :     _grad_disp(coupledGradients("displacements")),
      41       40068 :     _base_name(isParamValid("base_name") ? getParam<std::string>("base_name") + "_" : ""),
      42       19698 :     _mechanical_strain(declareProperty<RankTwoTensor>(_base_name + "mechanical_strain")),
      43       19698 :     _total_strain(declareProperty<RankTwoTensor>(_base_name + "total_strain")),
      44       39396 :     _eigenstrain_names(getParam<std::vector<MaterialPropertyName>>("eigenstrain_names")),
      45       19698 :     _eigenstrains(_eigenstrain_names.size()),
      46       19698 :     _global_strain(isParamValid("global_strain")
      47       20034 :                        ? &getMaterialProperty<RankTwoTensor>(_base_name + "global_strain")
      48             :                        : nullptr),
      49       58276 :     _volumetric_locking_correction(getParam<bool>("volumetric_locking_correction") &&
      50             :                                    !isBoundaryMaterial()),
      51       39396 :     _current_elem_volume(_assembly.elemVolume())
      52             : {
      53       23379 :   for (unsigned int i = 0; i < _eigenstrains.size(); ++i)
      54             :   {
      55        3681 :     _eigenstrain_names[i] = _base_name + _eigenstrain_names[i];
      56        3681 :     _eigenstrains[i] = &getMaterialProperty<RankTwoTensor>(_eigenstrain_names[i]);
      57             :   }
      58             : 
      59             :   // set unused dimensions to zero
      60       19698 :   _disp.resize(3, &_zero);
      61       19698 :   _grad_disp.resize(3, &_grad_zero);
      62             : 
      63       19698 :   if (_ndisp == 1 && _volumetric_locking_correction)
      64           0 :     paramError("volumetric_locking_correction", "has to be set to false for 1-D problems.");
      65             : 
      66       39396 :   if (getParam<bool>("use_displaced_mesh"))
      67           0 :     paramError("use_displaced_mesh", "The strain calculator needs to run on the undisplaced mesh.");
      68             : 
      69             :   // Generate warning when volumetric locking correction is used with second order elements
      70       19698 :   if (_mesh.hasSecondOrderElements() && _volumetric_locking_correction)
      71           0 :     mooseWarning("Volumetric locking correction is not required for second order elements. Using "
      72             :                  "volumetric locking with second order elements could cause zigzag patterns in "
      73             :                  "stresses and strains.");
      74       19698 : }
      75             : 
      76             : void
      77       16716 : ComputeStrainBase::initialSetup()
      78             : {
      79       16716 :   displacementIntegrityCheck();
      80       16716 : }
      81             : 
      82             : void
      83       16557 : ComputeStrainBase::displacementIntegrityCheck()
      84             : {
      85             :   // Checking for consistency between mesh size and length of the provided displacements vector
      86       16557 :   if (_ndisp != _mesh.dimension())
      87           0 :     paramError(
      88             :         "displacements",
      89             :         "The number of variables supplied in 'displacements' must match the mesh dimension.");
      90       16557 : }
      91             : 
      92             : void
      93         320 : ComputeStrainBase::initQpStatefulProperties()
      94             : {
      95         320 :   _mechanical_strain[_qp].zero();
      96         320 :   _total_strain[_qp].zero();
      97         320 : }