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
|
/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 itkFEMElement3DMembrane1DOF_hxx
#define itkFEMElement3DMembrane1DOF_hxx
namespace itk
{
namespace fem
{
template <typename TBaseClass>
Element3DMembrane1DOF<TBaseClass>::Element3DMembrane1DOF()
: Superclass()
, m_Mat(nullptr)
{}
// ////////////////////////////////////////////////////////////////////////
/*
* Methods related to the physics of the problem.
*/
template <typename TBaseClass>
void
Element3DMembrane1DOF<TBaseClass>::GetStrainDisplacementMatrix(MatrixType & /*HACK B*/,
const MatrixType & /*HACK shapeDgl*/) const
{
// HACK: Comment.
}
template <typename TBaseClass>
void
Element3DMembrane1DOF<TBaseClass>::GetMassMatrix(MatrixType & Me) const
{
// Call the parent's get matrix function
Superclass::GetMassMatrix(Me);
// Since parent class doesn't have the material properties,
// we need to adjust Me matrix here for the density of the element.
Me = Me * m_Mat->GetDensityHeatProduct();
}
template <typename TBaseClass>
void
Element3DMembrane1DOF<TBaseClass>::GetMaterialMatrix(MatrixType & D) const
{
unsigned int d = 3;
D.set_size(d, d);
D.fill(0.0);
// This is the main difference from the linear elasticity problem.
/* Material properties matrix. Simpler than linear elasticity. */
Float disot = m_Mat->GetYoungsModulus();
for (unsigned int i = 0; i < d; ++i)
{
D[i][i] = disot;
}
}
template <typename TBaseClass>
void
Element3DMembrane1DOF<TBaseClass>::GetStiffnessMatrix(MatrixType & Ke) const
{
Superclass::GetStiffnessMatrix(Ke);
}
template <typename TBaseClass>
void
Element3DMembrane1DOF<TBaseClass>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Materials: " << this->m_Mat << std::endl;
}
} // end namespace fem
} // end namespace itk
#endif
|
