Newmark.H
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23 
24 Class
25  Foam::sixDoFSolvers::Newmark
26 
27 Description
28  Newmark 2nd-order time-integrator for 6DoF solid-body motion.
29 
30  Reference:
31  \verbatim
32  Newmark, N. M. (1959).
33  A method of computation for structural dynamics.
34  Journal of the Engineering Mechanics Division, 85(3), 67-94.
35  \endverbatim
36 
37  Example specification in dynamicMeshDict:
38  \verbatim
39  solver
40  {
41  type Newmark;
42  gamma 0.5; // Velocity integration coefficient
43  beta 0.25; // Position integration coefficient
44  }
45  \endverbatim
46 
47 SourceFiles
48  Newmark.C
49 
50 \*---------------------------------------------------------------------------*/
51 
52 #ifndef Newmark_H
53 #define Newmark_H
54 
55 #include "sixDoFSolver.H"
56 
57 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
58 
59 namespace Foam
60 {
61 namespace sixDoFSolvers
62 {
63 
64 /*---------------------------------------------------------------------------*\
65  Class Newmark Declaration
66 \*---------------------------------------------------------------------------*/
67 
68 class Newmark
69 :
70  public sixDoFSolver
71 {
72  // Private data
73 
74  //- Coefficient for velocity integration (default: 0.5)
75  const scalar gamma_;
76 
77  //- Coefficient for position and orientation integration (default: 0.25)
78  const scalar beta_;
79 
80 
81 public:
82 
83  //- Runtime type information
84  TypeName("Newmark");
85 
86 
87  // Constructors
88 
89  //- Construct from a dictionary and the body
90  Newmark
91  (
92  const dictionary& dict,
94  );
95 
96 
97  //- Destructor
98  virtual ~Newmark();
99 
100 
101  // Member Functions
102 
103  //- Drag coefficient
104  virtual void solve
105  (
106  bool firstIter,
107  const vector& fGlobal,
108  const vector& tauGlobal,
109  scalar deltaT,
110  scalar deltaT0
111  );
112 };
113 
114 
115 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
116 
117 } // End namespace sixDoFSolvers
118 } // End namespace Foam
119 
120 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
121 
122 #endif
123 
124 // ************************************************************************* //
Six degree of freedom motion for a rigid body.
dictionary dict
A list of keyword definitions, which are a keyword followed by any number of values (e...
Definition: dictionary.H:137
TypeName("Newmark")
Runtime type information.
virtual ~Newmark()
Destructor.
Definition: Newmark.C:64
Newmark(const dictionary &dict, sixDoFRigidBodyMotion &body)
Construct from a dictionary and the body.
Definition: Newmark.C:44
Newmark 2nd-order time-integrator for 6DoF solid-body motion.
Definition: Newmark.H:67
virtual void solve(bool firstIter, const vector &fGlobal, const vector &tauGlobal, scalar deltaT, scalar deltaT0)
Drag coefficient.
Definition: Newmark.C:71
Namespace for OpenFOAM.