linearAxialAngularSpring.H
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23 
24 Class
25  Foam::RBD::restraints::linearAxialAngularSpring
26 
27 Description
28  Linear axial angular spring restraint.
29 
30 SourceFiles
31  linearAxialAngularSpring.C
32 
33 \*---------------------------------------------------------------------------*/
34 
35 #ifndef linearAxialAngularSpring_H
36 #define linearAxialAngularSpring_H
37 
38 #include "rigidBodyRestraint.H"
39 
40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
41 
42 namespace Foam
43 {
44 namespace RBD
45 {
46 namespace restraints
47 {
48 
49 /*---------------------------------------------------------------------------*\
50  Class linearAxialAngularSpring Declaration
51 \*---------------------------------------------------------------------------*/
52 
54 :
55  public restraint
56 {
57  // Private Data
58 
59  //- Reference orientation where there is no moment
60  tensor refQ_;
61 
62  //- Global unit axis around which the motion is sprung
63  vector axis_;
64 
65  //- Spring stiffness coefficient [Nm/rad]
66  scalar stiffness_;
67 
68  //- Damping coefficient [Nms/rad]
69  scalar damping_;
70 
71 
72 public:
73 
74  //- Runtime type information
75  TypeName("linearAxialAngularSpring");
76 
77 
78  // Constructors
79 
80  //- Construct from components
82  (
83  const word& name,
84  const dictionary& dict,
85  const rigidBodyModel& model
86  );
87 
88  //- Construct and return a clone
89  virtual autoPtr<restraint> clone() const
90  {
91  return autoPtr<restraint>
92  (
93  new linearAxialAngularSpring(*this)
94  );
95  }
96 
97 
98  //- Destructor
99  virtual ~linearAxialAngularSpring();
100 
101 
102  // Member Functions
103 
104  //- Accumulate the retraint internal joint forces into the tau field and
105  // external forces into the fx field
106  virtual void restrain
107  (
108  scalarField& tau,
110  const rigidBodyModelState& state
111  ) const;
112 
113  //- Update properties from given dictionary
114  virtual bool read(const dictionary& dict);
115 
116  //- Write
117  virtual void write(Ostream&) const;
118 };
119 
120 
121 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
122 
123 } // End namespace RBD
124 } // End namespace RBD
125 } // End namespace Foam
126 
127 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
128 
129 #endif
130 
131 // ************************************************************************* //
dictionary dict
A list of keyword definitions, which are a keyword followed by any number of values (e...
Definition: dictionary.H:156
Base class for defining restraints for rigid-body dynamics.
virtual bool read(const dictionary &dict)
Update properties from given dictionary.
Holds the motion state of rigid-body model.
virtual autoPtr< restraint > clone() const
Construct and return a clone.
const word & name() const
Return the name.
A class for handling words, derived from string.
Definition: word.H:59
An Ostream is an abstract base class for all output systems (streams, files, token lists...
Definition: Ostream.H:54
virtual void restrain(scalarField &tau, Field< spatialVector > &fx, const rigidBodyModelState &state) const
Accumulate the retraint internal joint forces into the tau field and.
TypeName("linearAxialAngularSpring")
Runtime type information.
Linear axial angular spring restraint.
An auto-pointer similar to the STL auto_ptr but with automatic casting to a reference to the type and...
Definition: PtrList.H:52
Basic rigid-body model representing a system of rigid-bodies connected by 1-6 DoF joints...
Namespace for OpenFOAM.
linearAxialAngularSpring(const word &name, const dictionary &dict, const rigidBodyModel &model)
Construct from components.