suanPan
QE2.h
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1/*******************************************************************************
2 * Copyright (C) 2017-2024 Theodore Chang
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 ******************************************************************************/
33#ifndef QE2_H
34#define QE2_H
35
37
38class QE2 final : public MaterialElement2D {
39 struct IntegrationPoint final {
40 vec coor;
41 const double factor;
42 unique_ptr<Material> m_material;
43 mat P, A, B, BI;
44 IntegrationPoint(vec&&, double, unique_ptr<Material>&&);
45 };
46
47 static constexpr unsigned m_node = 4, m_dof = 2, m_size = m_dof * m_node;
48
49 static mat mapping;
50
51 const double thickness;
52
53 vector<IntegrationPoint> int_pt;
54
55 const mat mat_stiffness, iso_mapping;
56
57 mat HT, HIL, HILI, L, LI; // constant matrices
58
59 mat initial_qtitt, trial_qtitt, current_qtitt; // eq. 65
60 vec trial_qtifi, current_qtifi; // eq. 65
61 vec trial_lambda, current_lambda; // enhanced strain
62 vec trial_alpha, current_alpha; // strain
63 vec trial_beta, current_beta; // stress
64
65 vec pre_disp;
66
67 static vec form_stress_mode(double, double);
68
69public:
70 QE2(
71 unsigned, // tag
72 uvec&&, // node tags
73 unsigned, // material tags
74 double = 1. // thickness
75 );
76
77 int initialize(const shared_ptr<DomainBase>&) override;
78
79 int update_status() override;
80
81 int clear_status() override;
82 int commit_status() override;
83 int reset_status() override;
84
85 [[nodiscard]] mat compute_shape_function(const mat&, unsigned) const override;
86
87 vector<vec> record(OutputType) override;
88
89 void print() override;
90
91#ifdef SUANPAN_VTK
92 void Setup() override;
93 void GetData(vtkSmartPointer<vtkDoubleArray>&, OutputType) override;
94 mat GetData(OutputType) override;
95 void SetDeformation(vtkSmartPointer<vtkPoints>&, double) override;
96#endif
97};
98
99#endif
100
OutputType
Definition: OutputType.h:23
Definition: MaterialElement.h:64
A QE2 class.
Definition: QE2.h:38
int update_status() override
Definition: QE2.cpp:136
int clear_status() override
Definition: QE2.cpp:165
QE2(unsigned, uvec &&, unsigned, double=1.)
Definition: QE2.cpp:42
vector< vec > record(OutputType) override
Definition: QE2.cpp:207
mat compute_shape_function(const mat &, unsigned) const override
Definition: QE2.cpp:205
int reset_status() override
Definition: QE2.cpp:192
void print() override
Definition: QE2.cpp:217
int initialize(const shared_ptr< DomainBase > &) override
Definition: QE2.cpp:46
int commit_status() override
Definition: QE2.cpp:179