/usr/include/ITK-4.9/itkFEMElement2DMembrane.h is in libinsighttoolkit4-dev 4.9.0-4ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | /*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkFEMElement2DMembrane_h
#define itkFEMElement2DMembrane_h
#include "itkFEMElementBase.h"
#include "itkFEMMaterialLinearElasticity.h"
namespace itk
{
namespace fem
{
/**
* \class Element2DMembrane
* \brief Class that is used to define a membrane energy problem in 2D space.
*
* This class only defines the physics of the problem. Use his class together
* with element classes that specify the geometry to fully define the element.
*
* A membrane element a two dimensional flat extensional element.
* There are two in plane displacement DOF's at each node of the element.
* The elements can be used to model two dimensional elasticity problems, plane
* strain and plane stress. The membrane element has no rotational stiffness or
* stiffness normal to the plane of the element. It can be situated arbitrarily
* in space but the resultant forces must lie in the plane of the element.
*
*
* You can specify one template parameter:
*
* TBaseClass - Class from which Element2DMembrane is derived. TBaseClass must
* be derived from the Element base class. This enables you
* to use this class at any level of element definition.
* If not specified, it defaults to the Element base class.
* \ingroup ITKFEM
*/
template <typename TBaseClass = Element>
class Element2DMembrane : public TBaseClass
{
public:
/** Standard class typedefs. */
typedef Element2DMembrane Self;
typedef TBaseClass Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(Element2DMembrane, TBaseClass);
// Repeat the required typedefs and enums from parent class
typedef typename Superclass::Float Float;
typedef typename Superclass::MatrixType MatrixType;
typedef typename Superclass::VectorType VectorType;
/**
* Default constructor only clears the internal storage
*/
Element2DMembrane();
// ////////////////////////////////////////////////////////////////////////
/**
* Methods related to the physics of the problem.
*/
/**
* Compute the B matrix.
*/
virtual void GetStrainDisplacementMatrix(MatrixType & B, const MatrixType & shapeDgl) const ITK_OVERRIDE;
/**
* Compute the D matrix.
*/
virtual void GetMaterialMatrix(MatrixType & D) const ITK_OVERRIDE;
/**
* Compute the mass matrix specific for 2D stress problems.
*/
void GetMassMatrix(MatrixType & Me) const ITK_OVERRIDE;
/**
* 2D stress elements have 2 DOFs per node.
*/
virtual unsigned int GetNumberOfDegreesOfFreedomPerNode(void) const ITK_OVERRIDE
{
return 2;
}
/**
* Get/Set the material properties for the element
*/
virtual Material::ConstPointer GetMaterial(void) const ITK_OVERRIDE
{
return m_mat;
}
virtual void SetMaterial(Material::ConstPointer mat_) ITK_OVERRIDE
{
m_mat =
dynamic_cast<const MaterialLinearElasticity *>( mat_.GetPointer() );
}
protected:
virtual void PrintSelf(std::ostream& os, Indent indent) const ITK_OVERRIDE;
/**
* Pointer to material properties for the element
*/
const MaterialLinearElasticity *m_mat;
}; // class Element2DMembrane
}
} // end namespace itk::fem
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkFEMElement2DMembrane.hxx"
#endif
#endif // #ifndef itkFEMElement2DMembrane_h
|