itkFEMElement2DStress.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkFEMElement2DStress.h,v $
  Language:  C++
  Date:      $Date: 2009-01-29 20:09:10 $
  Version:   $Revision: 1.9 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/

#ifndef __itkFEMElement2DStress_h
#define __itkFEMElement2DStress_h

#include "itkFEMElementBase.h"
#include "itkFEMMaterialLinearElasticity.h"

namespace itk {
namespace fem {

template<class TBaseClass=Element>
class Element2DStress : public TBaseClass
{
FEM_ABSTRACT_CLASS(Element2DStress,TBaseClass)
public:

  // Repeat the required typedefs and enums from parent class
  typedef typename Superclass::Float      Float;
  typedef typename Superclass::MatrixType MatrixType;
  typedef typename Superclass::VectorType VectorType;

  virtual void Read( std::istream&, void* info );

  virtual void Write( std::ostream& f ) const;

  Element2DStress();

  /*
   * Methods related to the physics of the problem.
   */

  virtual void GetStrainDisplacementMatrix(MatrixType& B, const MatrixType& shapeDgl) const;

  virtual void GetMaterialMatrix(MatrixType& D) const;

  void GetMassMatrix(MatrixType& Me) const;


  virtual unsigned int GetNumberOfDegreesOfFreedomPerNode( void ) const
    { return 2; }

public:

  MaterialLinearElasticity::ConstPointer m_mat;
  virtual Material::ConstPointer GetMaterial(void) const { return m_mat; }
  virtual void SetMaterial(Material::ConstPointer mat_ ) { m_mat=dynamic_cast<const MaterialLinearElasticity*>(&*mat_); }

}; // class Element2DStress

#ifdef _MSC_VER
// Declare a static dummy function to prevent a MSVC 6.0 SP5 from crashing.
// I have no idea why things don't work when this is not declared, but it
// looks like this declaration makes compiler forget about some of the
// troubles it has with templates.
static void Dummy( void );
#endif // #ifdef _MSC_VER

}} // end namespace itk::fem

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkFEMElement2DStress.txx"
#endif

#endif  // #ifndef __itkFEMElement2DStress_h