00001 /*========================================================================= 00002 00003 Program: Insight Segmentation & Registration Toolkit 00004 Module: $RCSfile: itkFEMElement2DStress.h,v $ 00005 Language: C++ 00006 Date: $Date: 2009-01-29 20:09:10 $ 00007 Version: $Revision: 1.9 $ 00008 00009 Copyright (c) Insight Software Consortium. All rights reserved. 00010 See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. 00011 00012 This software is distributed WITHOUT ANY WARRANTY; without even 00013 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 00014 PURPOSE. See the above copyright notices for more information. 00015 00016 =========================================================================*/ 00017 00018 #ifndef __itkFEMElement2DStress_h 00019 #define __itkFEMElement2DStress_h 00020 00021 #include "itkFEMElementBase.h" 00022 #include "itkFEMMaterialLinearElasticity.h" 00023 00024 namespace itk { 00025 namespace fem { 00026 00041 template<class TBaseClass=Element> 00042 class Element2DStress : public TBaseClass 00043 { 00044 FEM_ABSTRACT_CLASS(Element2DStress,TBaseClass) 00045 public: 00046 00047 // Repeat the required typedefs and enums from parent class 00048 typedef typename Superclass::Float Float; 00049 typedef typename Superclass::MatrixType MatrixType; 00050 typedef typename Superclass::VectorType VectorType; 00051 00055 virtual void Read( std::istream&, void* info ); 00056 00060 virtual void Write( std::ostream& f ) const; 00061 00065 Element2DStress(); 00066 00068 /* 00069 * Methods related to the physics of the problem. 00070 */ 00071 00075 virtual void GetStrainDisplacementMatrix(MatrixType& B, const MatrixType& shapeDgl) const; 00076 00080 virtual void GetMaterialMatrix(MatrixType& D) const; 00081 00085 void GetMassMatrix(MatrixType& Me) const; 00086 00087 00091 virtual unsigned int GetNumberOfDegreesOfFreedomPerNode( void ) const 00092 { return 2; } 00093 00094 public: 00095 00099 MaterialLinearElasticity::ConstPointer m_mat; 00100 virtual Material::ConstPointer GetMaterial(void) const { return m_mat; } 00101 virtual void SetMaterial(Material::ConstPointer mat_ ) { m_mat=dynamic_cast<const MaterialLinearElasticity*>(&*mat_); } 00103 00104 }; // class Element2DStress 00105 00106 #ifdef _MSC_VER 00107 // Declare a static dummy function to prevent a MSVC 6.0 SP5 from crashing. 00108 // I have no idea why things don't work when this is not declared, but it 00109 // looks like this declaration makes compiler forget about some of the 00110 // troubles it has with templates. 00111 static void Dummy( void ); 00112 #endif // #ifdef _MSC_VER 00113 00114 }} // end namespace itk::fem 00115 00116 #ifndef ITK_MANUAL_INSTANTIATION 00117 #include "itkFEMElement2DStress.txx" 00118 #endif 00119 00120 #endif // #ifndef __itkFEMElement2DStress_h 00121