ExplicitSmallStrain.hpp

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/*
 * ------------------------------------------------------------------------------------------------------------
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 * Copyright (c) 2016-2024 Lawrence Livermore National Security LLC
 * Copyright (c) 2018-2024 TotalEnergies
 * Copyright (c) 2018-2024 The Board of Trustees of the Leland Stanford Junior University
 * Copyright (c) 2023-2024 Chevron
 * Copyright (c) 2019-     GEOS/GEOSX Contributors
 * All rights reserved
 *
 * See top level LICENSE, COPYRIGHT, CONTRIBUTORS, NOTICE, and ACKNOWLEDGEMENTS files for details.
 * ------------------------------------------------------------------------------------------------------------
 */
 
#ifndef GEOS_PHYSICSSOLVERS_SOLIDMECHANICS_KERNELS_EXPLICITSMALLSTRAIN_HPP_
#define GEOS_PHYSICSSOLVERS_SOLIDMECHANICS_KERNELS_EXPLICITSMALLSTRAIN_HPP_
 
#include "finiteElement/kernelInterface/KernelBase.hpp"
#include "physicsSolvers/solidMechanics/SolidMechanicsFields.hpp"
 
 
namespace geos
{
 
namespace solidMechanicsLagrangianFEMKernels
{
 
#define UPDATE_STRESS 2
 
template< typename SUBREGION_TYPE,
          typename CONSTITUTIVE_TYPE,
          typename FE_TYPE >
class ExplicitSmallStrain : public finiteElement::KernelBase< SUBREGION_TYPE,
                                                              CONSTITUTIVE_TYPE,
                                                              FE_TYPE,
                                                              3,
                                                              3 >
{
public:
 
  using Base = finiteElement::KernelBase< SUBREGION_TYPE,
                                          CONSTITUTIVE_TYPE,
                                          FE_TYPE,
                                          3,
                                          3 >;
 
  static constexpr int numNodesPerElem = Base::maxNumTestSupportPointsPerElem;
 
  using Base::numDofPerTestSupportPoint;
  using Base::numDofPerTrialSupportPoint;
  using Base::m_elemsToNodes;
  using Base::m_elemGhostRank;
  using Base::m_constitutiveUpdate;
  using Base::m_finiteElementSpace;
 
//*****************************************************************************
  ExplicitSmallStrain( NodeManager & nodeManager,
                       EdgeManager const & edgeManager,
                       FaceManager const & faceManager,
                       localIndex const targetRegionIndex,
                       SUBREGION_TYPE const & elementSubRegion,
                       FE_TYPE const & finiteElementSpace,
                       CONSTITUTIVE_TYPE & inputConstitutiveType,
                       real64 const dt,
                       string const elementListName );
 
  //*****************************************************************************
  struct StackVariables : Base::StackVariables
  {
public:
    GEOS_HOST_DEVICE
    StackVariables():
      fLocal{ { 0.0} },
      varLocal{ {0.0} },
      xLocal()
    {}
 
    real64 fLocal[ numNodesPerElem ][ numDofPerTrialSupportPoint ];
 
    real64 varLocal[ numNodesPerElem ][ numDofPerTestSupportPoint ];
 
#if !defined(CALC_FEM_SHAPE_IN_KERNEL)
    int xLocal;
#else
    real64 xLocal[ numNodesPerElem ][ 3 ];
#endif
  };
  //***************************************************************************
 
 
  GEOS_HOST_DEVICE
  void setup( localIndex const k,
              StackVariables & stack ) const;
 
  GEOS_HOST_DEVICE
  void quadraturePointKernel( localIndex const k,
                              localIndex const q,
                              StackVariables & stack ) const;
 
  GEOS_HOST_DEVICE
  real64 complete( localIndex const k,
                   StackVariables const & stack ) const;
 
  template< typename POLICY,
            typename KERNEL_TYPE >
  static real64
  kernelLaunch( localIndex const numElems,
                KERNEL_TYPE const & kernelComponent );
 
 
protected:
  arrayView2d< real64 const, nodes::REFERENCE_POSITION_USD > const m_X;
 
  arrayView2d< real64 const, nodes::TOTAL_DISPLACEMENT_USD > const m_u;
 
  arrayView2d< real64 const, nodes::VELOCITY_USD > const m_vel;
 
  arrayView2d< real64, nodes::ACCELERATION_USD > const m_acc;
 
  real64 const m_dt; 
 
  SortedArrayView< localIndex const > const m_elementList;
 
 
};
 
 
 
using ExplicitSmallStrainFactory = finiteElement::KernelFactory< ExplicitSmallStrain,
                                                                 real64,
                                                                 string const >;
 
 
 
} // namespace solidMechanicsLagrangianFEMKernels
 
} // namespace geos
 
#endif //GEOS_PHYSICSSOLVERS_SOLIDMECHANICS_KERNELS_EXPLICITSMALLSTRAIN_HPP_