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NonlinearJ2.h
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2 * Copyright (C) 2017-2024 Theodore Chang
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31#ifndef NONLINEARJ2_H
32#define NONLINEARJ2_H
33
35
37 const double elastic_modulus; // elastic modulus
38 const double poissons_ratio; // poisson's ratio
39};
40
41class NonlinearJ2 : protected DataNonlinearJ2, public Material3D {
42 static constexpr unsigned max_iteration = 20u;
43 static constexpr double two_third = 2. / 3.;
44 static const double root_two_third;
45 static const mat unit_dev_tensor;
46
47 const double shear_modulus = elastic_modulus / (2. + 2. * poissons_ratio); // shear modulus
48 const double double_shear = 2. * shear_modulus; // double shear modulus
49 const double square_double_shear = double_shear * double_shear; // square shear modulus
50
51 [[nodiscard]] virtual double compute_k(double) const = 0;
52 [[nodiscard]] virtual double compute_dk(double) const = 0;
53 [[nodiscard]] virtual double compute_h(double) const = 0;
54 [[nodiscard]] virtual double compute_dh(double) const = 0;
55
56public:
58 unsigned, // tag
59 double, // elastic modulus
60 double, // poisson's ratio
61 double = 0. // density
62 );
63
64 int initialize(const shared_ptr<DomainBase>&) override;
65
66 [[nodiscard]] double get_parameter(ParameterType) const override;
67
68 int update_trial_status(const vec&) override;
69
70 int clear_status() override;
71 int commit_status() override;
72 int reset_status() override;
73
74 void print() override;
75};
76
77#endif
78
ParameterType
Definition: ParameterType.h:21
The Material3D class.
Definition: Material3D.h:37
The NonlinearJ2 class.
Definition: NonlinearJ2.h:41
int clear_status() override
Definition: NonlinearJ2.cpp:100
int reset_status() override
Definition: NonlinearJ2.cpp:116
int commit_status() override
Definition: NonlinearJ2.cpp:108
double get_parameter(ParameterType) const override
Definition: NonlinearJ2.cpp:37
int update_trial_status(const vec &) override
Definition: NonlinearJ2.cpp:39
int initialize(const shared_ptr< DomainBase > &) override
Definition: NonlinearJ2.cpp:29
NonlinearJ2(unsigned, double, double, double=0.)
Definition: NonlinearJ2.cpp:25
void print() override
Definition: NonlinearJ2.cpp:124
Definition: NonlinearJ2.h:36
const double elastic_modulus
Definition: NonlinearJ2.h:37
const double poissons_ratio
Definition: NonlinearJ2.h:38