00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd. 00006 \\/ M anipulation | 00007 ------------------------------------------------------------------------------- 00008 License 00009 This file is part of OpenFOAM. 00010 00011 OpenFOAM is free software: you can redistribute it and/or modify it 00012 under the terms of the GNU General Public License as published by 00013 the Free Software Foundation, either version 3 of the License, or 00014 (at your option) any later version. 00015 00016 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00018 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00019 for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>. 00023 00024 Class 00025 Foam::sixDoFRigidBodyMotionRestraints::linearAxialAngularSpring 00026 00027 Description 00028 sixDoFRigidBodyMotionRestraints model. Linear axial angular spring. 00029 00030 SourceFiles 00031 linearAxialAngularSpring.C 00032 00033 \*---------------------------------------------------------------------------*/ 00034 00035 #ifndef linearAxialAngularSpring_H 00036 #define linearAxialAngularSpring_H 00037 00038 #include <forces/sixDoFRigidBodyMotionRestraint.H> 00039 #include <OpenFOAM/point.H> 00040 #include <OpenFOAM/tensor.H> 00041 00042 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00043 00044 namespace Foam 00045 { 00046 00047 namespace sixDoFRigidBodyMotionRestraints 00048 { 00049 00050 /*---------------------------------------------------------------------------*\ 00051 Class linearAxialAngularSpring Declaration 00052 \*---------------------------------------------------------------------------*/ 00053 00054 class linearAxialAngularSpring 00055 : 00056 public sixDoFRigidBodyMotionRestraint 00057 { 00058 // Private data 00059 00060 //- Reference orientation where there is no moment 00061 tensor refQ_; 00062 00063 //- Global unit axis around which the motion is sprung 00064 vector axis_; 00065 00066 //- Spring stiffness coefficient (Nm/rad) 00067 scalar stiffness_; 00068 00069 //- Damping coefficient (Nms/rad) 00070 scalar damping_; 00071 00072 00073 public: 00074 00075 //- Runtime type information 00076 TypeName("linearAxialAngularSpring"); 00077 00078 00079 // Constructors 00080 00081 //- Construct from components 00082 linearAxialAngularSpring 00083 ( 00084 const dictionary& sDoFRBMRDict 00085 ); 00086 00087 //- Construct and return a clone 00088 virtual autoPtr<sixDoFRigidBodyMotionRestraint> clone() const 00089 { 00090 return autoPtr<sixDoFRigidBodyMotionRestraint> 00091 ( 00092 new linearAxialAngularSpring(*this) 00093 ); 00094 } 00095 00096 00097 // Destructor 00098 00099 virtual ~linearAxialAngularSpring(); 00100 00101 00102 // Member Functions 00103 00104 //- Calculate the restraint position, force and moment. 00105 // Global reference frame vectors. 00106 virtual void restrain 00107 ( 00108 const sixDoFRigidBodyMotion& motion, 00109 vector& restraintPosition, 00110 vector& restraintForce, 00111 vector& restraintMoment 00112 ) const; 00113 00114 //- Update properties from given dictionary 00115 virtual bool read(const dictionary& sDoFRBMRCoeff); 00116 00117 //- Write 00118 virtual void write(Ostream&) const; 00119 }; 00120 00121 00122 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00123 00124 } // End namespace solidBodyMotionFunctions 00125 } // End namespace Foam 00126 00127 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00128 00129 #endif 00130 00131 // ************************ vim: set sw=4 sts=4 et: ************************ //
