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::sphericalAngularSpring 00026 00027 Description 00028 sixDoFRigidBodyMotionRestraints model. Spherical angular spring. 00029 00030 SourceFiles 00031 sphericalAngularSpring.C 00032 00033 \*---------------------------------------------------------------------------*/ 00034 00035 #ifndef sphericalAngularSpring_H 00036 #define sphericalAngularSpring_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 sphericalAngularSpring Declaration 00052 \*---------------------------------------------------------------------------*/ 00053 00054 class sphericalAngularSpring 00055 : 00056 public sixDoFRigidBodyMotionRestraint 00057 { 00058 // Private data 00059 00060 //- Reference orientation where there is no moment 00061 tensor refQ_; 00062 00063 //- Spring stiffness coefficient (Nm/rad) 00064 scalar stiffness_; 00065 00066 //- Damping coefficient (Nms/rad) 00067 scalar damping_; 00068 00069 00070 public: 00071 00072 //- Runtime type information 00073 TypeName("sphericalAngularSpring"); 00074 00075 00076 // Constructors 00077 00078 //- Construct from components 00079 sphericalAngularSpring 00080 ( 00081 const dictionary& sDoFRBMRDict 00082 ); 00083 00084 //- Construct and return a clone 00085 virtual autoPtr<sixDoFRigidBodyMotionRestraint> clone() const 00086 { 00087 return autoPtr<sixDoFRigidBodyMotionRestraint> 00088 ( 00089 new sphericalAngularSpring(*this) 00090 ); 00091 } 00092 00093 00094 // Destructor 00095 00096 virtual ~sphericalAngularSpring(); 00097 00098 00099 // Member Functions 00100 00101 //- Calculate the restraint position, force and moment. 00102 // Global reference frame vectors. 00103 virtual void restrain 00104 ( 00105 const sixDoFRigidBodyMotion& motion, 00106 vector& restraintPosition, 00107 vector& restraintForce, 00108 vector& restraintMoment 00109 ) const; 00110 00111 //- Update properties from given dictionary 00112 virtual bool read(const dictionary& sDoFRBMRCoeff); 00113 00114 //- Write 00115 virtual void write(Ostream&) const; 00116 }; 00117 00118 00119 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00120 00121 } // End namespace solidBodyMotionFunctions 00122 } // End namespace Foam 00123 00124 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00125 00126 #endif 00127 00128 // ************************ vim: set sw=4 sts=4 et: ************************ //
