Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://www.mooseframework.org
       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 "Compute2DSmallStrain.h"
      11             : 
      12             : #include "libmesh/quadrature.h"
      13             : 
      14             : InputParameters
      15         508 : Compute2DSmallStrain::validParams()
      16             : {
      17         508 :   InputParameters params = ComputeSmallStrain::validParams();
      18         508 :   params.addClassDescription("Compute a small strain in a plane strain configuration.");
      19             : 
      20        1016 :   MooseEnum outOfPlaneDirection("x y z", "z");
      21        1016 :   params.addParam<MooseEnum>(
      22             :       "out_of_plane_direction", outOfPlaneDirection, "The direction of the out-of-plane strain.");
      23         508 :   return params;
      24         508 : }
      25             : 
      26         381 : Compute2DSmallStrain::Compute2DSmallStrain(const InputParameters & parameters)
      27             :   : ComputeSmallStrain(parameters),
      28         762 :     _out_of_plane_direction(getParam<MooseEnum>("out_of_plane_direction"))
      29             : {
      30         381 : }
      31             : 
      32             : void
      33         378 : Compute2DSmallStrain::initialSetup()
      34             : {
      35         378 :   displacementIntegrityCheck();
      36        1512 :   for (unsigned int i = 0; i < 3; ++i)
      37             :   {
      38        1134 :     if (_out_of_plane_direction == i)
      39             :     {
      40         378 :       _disp[i] = &_zero;
      41         378 :       _grad_disp[i] = &_grad_zero;
      42             :     }
      43             :     else
      44             :     {
      45         756 :       _disp[i] = &coupledValue("displacements", i);
      46         756 :       _grad_disp[i] = &coupledGradient("displacements", i);
      47             :     }
      48             :   }
      49         378 : }
      50             : 
      51             : void
      52      103022 : Compute2DSmallStrain::computeProperties()
      53             : {
      54      103022 :   const auto o0 = _out_of_plane_direction;
      55      103022 :   const auto o1 = (_out_of_plane_direction + 1) % 3;
      56      103022 :   const auto o2 = (_out_of_plane_direction + 2) % 3;
      57             : 
      58             :   Real volumetric_strain = 0.0;
      59      550376 :   for (_qp = 0; _qp < _qrule->n_points(); ++_qp)
      60             :   {
      61      447354 :     _total_strain[_qp](o0, o0) = computeOutOfPlaneStrain();
      62      447354 :     _total_strain[_qp](o1, o1) = (*_grad_disp[o1])[_qp](o1);
      63      447354 :     _total_strain[_qp](o2, o2) = (*_grad_disp[o2])[_qp](o2);
      64      447354 :     _total_strain[_qp](o1, o2) = ((*_grad_disp[o1])[_qp](o2) + (*_grad_disp[o2])[_qp](o1)) / 2.0;
      65      447354 :     _total_strain[_qp](o2, o1) = _total_strain[_qp](o1, o2); // force the symmetrical strain tensor
      66             : 
      67      447354 :     if (_volumetric_locking_correction)
      68      190464 :       volumetric_strain += _total_strain[_qp].trace() * _JxW[_qp] * _coord[_qp];
      69             :   }
      70             : 
      71      103022 :   if (_volumetric_locking_correction)
      72       47616 :     volumetric_strain /= _current_elem_volume;
      73             : 
      74      550376 :   for (_qp = 0; _qp < _qrule->n_points(); ++_qp)
      75             :   {
      76      447354 :     if (_volumetric_locking_correction)
      77             :     {
      78      190464 :       const Real correction = (volumetric_strain - _total_strain[_qp].trace()) / 3.0;
      79      190464 :       _total_strain[_qp](0, 0) += correction;
      80      190464 :       _total_strain[_qp](1, 1) += correction;
      81      190464 :       _total_strain[_qp](2, 2) += correction;
      82             :     }
      83             : 
      84      447354 :     _mechanical_strain[_qp] = _total_strain[_qp];
      85             : 
      86             :     // Remove the eigenstrains
      87      539802 :     for (const auto es : _eigenstrains)
      88       92448 :       _mechanical_strain[_qp] -= (*es)[_qp];
      89             :   }
      90      103022 : }
      91             : 
      92             : void
      93         378 : Compute2DSmallStrain::displacementIntegrityCheck()
      94             : {
      95         378 :   if (_out_of_plane_direction != 2 && _ndisp != 3)
      96           0 :     mooseError("For 2D simulations where the out-of-plane direction is x or y the number of "
      97             :                "supplied displacements must be three.");
      98         378 :   else if (_out_of_plane_direction == 2 && _ndisp != 2)
      99           0 :     mooseError("For 2D simulations where the out-of-plane direction is z the number of supplied "
     100             :                "displacements must be two.");
     101         378 : }