Assemble G *. More...

#include "tutorials/cor-7_elasticity_mixed_formulation/src/ElasticityMixedFormulation.hpp"

Inheritance diagram for OpAssembleG:

Collaboration diagram for OpAssembleG:

Public Member Functions
	OpAssembleG (DataAtIntegrationPts &common_data, BlockData &data)

PetscErrorCode	doWork (int row_side, int col_side, EntityType row_type, EntityType col_type, EntitiesFieldData::EntData &row_data, EntitiesFieldData::EntData &col_data)

Public Attributes
DataAtIntegrationPts &	commonData

MatrixDouble	locG

BlockData &	dAta

Detailed Description

Assemble G *.

*

\[ {\bf{G}} = - \int\limits_\Omega {{{\bf{B}}^T}{\bf m}{{\bf{N}}_p}d\Omega } \]

Examples: mofem/tutorials/cor-7_elasticity_mixed_formulation/elasticity_mixed_formulation.cpp, and mofem/tutorials/cor-7_elasticity_mixed_formulation/src/ElasticityMixedFormulation.hpp.

Definition at line 214 of file ElasticityMixedFormulation.hpp.

Constructor & Destructor Documentation

◆ OpAssembleG()

OpAssembleG::OpAssembleG	(	DataAtIntegrationPts &	common_data,
		BlockData &	data
	)

inline

Definition at line 221 of file ElasticityMixedFormulation.hpp.

      : VolumeElementForcesAndSourcesCore::UserDataOperator(
            "U", "P", UserDataOperator::OPROWCOL),
        commonData(common_data), dAta(data) {
    sYmm = false;
  }

Member Function Documentation

◆ doWork()

PetscErrorCode OpAssembleG::doWork	(	int	row_side,
		int	col_side,
		EntityType	row_type,
		EntityType	col_type,
		EntitiesFieldData::EntData &	row_data,
		EntitiesFieldData::EntData &	col_data
	)

inline

Examples: mofem/tutorials/cor-7_elasticity_mixed_formulation/src/ElasticityMixedFormulation.hpp.

Definition at line 228 of file ElasticityMixedFormulation.hpp.

                                                            {
 
    MoFEMFunctionBegin;
 
    const int row_nb_dofs = row_data.getIndices().size();
    if (!row_nb_dofs)
      MoFEMFunctionReturnHot(0);
    const int col_nb_dofs = col_data.getIndices().size();
    if (!col_nb_dofs)
      MoFEMFunctionReturnHot(0);
 
    if (dAta.tEts.find(getNumeredEntFiniteElementPtr()->getEnt()) ==
        dAta.tEts.end()) {
      MoFEMFunctionReturnHot(0);
    }
    commonData.getBlockData(dAta);
 
    // Set size can clear local tangent matrix
    locG.resize(row_nb_dofs, col_nb_dofs, false);
    locG.clear();
    const int row_nb_gauss_pts = row_data.getN().size1();
    if (!row_nb_gauss_pts)
      MoFEMFunctionReturnHot(0);
    const int row_nb_base_functions = row_data.getN().size2();
    auto row_diff_base_functions = row_data.getFTensor1DiffN<3>();
 
    FTensor::Tensor1<double, 3> t1;
    FTensor::Index<'i', 3> i;
    FTensor::Index<'j', 3> j;
 
    // INTEGRATION
    for (int gg = 0; gg != row_nb_gauss_pts; gg++) {
 
      // Get volume and integration weight
      double w = getVolume() * getGaussPts()(3, gg);
 
      int row_bb = 0;
      for (; row_bb != row_nb_dofs / 3; row_bb++) {
 
        t1(i) = w * row_diff_base_functions(i);
 
        auto base_functions = col_data.getFTensor0N(gg, 0);
        for (int col_bb = 0; col_bb != col_nb_dofs; col_bb++) {
 
          FTensor::Tensor1<double *, 3> k(&locG(3 * row_bb + 0, col_bb),
                                          &locG(3 * row_bb + 1, col_bb),
                                          &locG(3 * row_bb + 2, col_bb));
 
          k(i) += t1(i) * base_functions;
          ++base_functions;
        }
        ++row_diff_base_functions;
      }
      for (; row_bb != row_nb_base_functions; row_bb++) {
        ++row_diff_base_functions;
      }
    }
 
    CHKERR MatSetValues(getFEMethod()->ksp_B, row_nb_dofs,
                        &*row_data.getIndices().begin(), col_nb_dofs,
                        &*col_data.getIndices().begin(), &*locG.data().begin(),
                        ADD_VALUES);
 
    // ASSEMBLE THE TRANSPOSE
    locG = trans(locG);
    CHKERR MatSetValues(getFEMethod()->ksp_B, col_nb_dofs,
                        &*col_data.getIndices().begin(), row_nb_dofs,
                        &*row_data.getIndices().begin(), &*locG.data().begin(),
                        ADD_VALUES);
    MoFEMFunctionReturn(0);
  }