cl_EF_QUAD4TS.hpp

Go to the documentation of this file.

/*
 * BELFEM -- The Berkeley Lab Finite Element Framework
 * Copyright (c) 2026, The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory (subject to receipt of any required
 * approvals from the U.S. Dept. of Energy).  All rights reserved.
 *
 * Developers: Christian Messe, Gregory Giard
 *
 * See the top-level LICENSE file for the complete license and disclaimer.
 */
 
#ifndef BELFEM_CL_EF_QUAD4TS_HPP
#define BELFEM_CL_EF_QUAD4TS_HPP
 
#include "nedelec/cl_EF_EdgeFunction.hpp"
#include "cl_FEM_Element.hpp"
 
namespace belfem
{
    namespace fem
    {
        class Element;
 
        class EF_QUAD4TS : public EdgeFunction
        {
            // edge directions
            real mS[ 2 ];
 
            // derivatives for line element
            real mNablaXi[ 2 ];
            real mNablaEta[ 2 ];
 
            // normal to the line (in 2D space)
            real mN[ 2 ];
            real mDetGram ;
            real mThickness ;
            real mLength ;
 
            // coefficients for shape function
            Matrix< real > mF ;
            Matrix< real > mG ;
 
            // pseudo inverse (1D jacobian for line)
            Matrix< real > mPseudoInvJ ;
 
            // gram matrix (1x1 for line)
            Matrix< real > mGram ;
 
            // coefficient matrix
            Matrix< real > mCoeffs ;
 
            // parameter matrix for curl
            Cell< Matrix< real > > mCurlPars ;
 
//------------------------------------------------------------------------------
        public:
//------------------------------------------------------------------------------

            EF_QUAD4TS();
 
//------------------------------------------------------------------------------

            ~EF_QUAD4TS() override = default;
 
//------------------------------------------------------------------------------
 
            void
            precompute( const Matrix< real > & aXi ) override ;
 
//------------------------------------------------------------------------------

            void
            link( Element * aElement ) override ;
 
//------------------------------------------------------------------------------

            const Matrix< real > &
            E( const uint aIndex ) override ;
 
//------------------------------------------------------------------------------

            const Matrix< real > &
            C( const uint aIndex = 0 ) override ;
 
//------------------------------------------------------------------------------

            const Matrix< real > &
            G( const uint aIndex = 0 ) override ;
 
//------------------------------------------------------------------------------
        };
 
//------------------------------------------------------------------------------
 
        inline const Matrix< real > &
        EF_QUAD4TS::G( const uint aIndex )
        {
            return mGrad ;
        }
 
//------------------------------------------------------------------------------
    } /* end namespace fem */
}  /* end namespace belfem */
 
#endif //BELFEM_CL_EF_QUAD4TS_HPP