DispBeamColumn2d.hGo to the documentation of this file.00001 /* ****************************************************************** ** 00002 ** OpenSees - Open System for Earthquake Engineering Simulation ** 00003 ** Pacific Earthquake Engineering Research Center ** 00004 ** ** 00005 ** ** 00006 ** (C) Copyright 1999, The Regents of the University of California ** 00007 ** All Rights Reserved. ** 00008 ** ** 00009 ** Commercial use of this program without express permission of the ** 00010 ** University of California, Berkeley, is strictly prohibited. See ** 00011 ** file 'COPYRIGHT' in main directory for information on usage and ** 00012 ** redistribution, and for a DISCLAIMER OF ALL WARRANTIES. ** 00013 ** ** 00014 ** Developed by: ** 00015 ** Frank McKenna (fmckenna@ce.berkeley.edu) ** 00016 ** Gregory L. Fenves (fenves@ce.berkeley.edu) ** 00017 ** Filip C. Filippou (filippou@ce.berkeley.edu) ** 00018 ** ** 00019 ** ****************************************************************** */ 00020 00021 // $Revision: 1.16 $ 00022 // $Date: 2006/09/05 22:59:03 $ 00023 // $Source: /usr/local/cvs/OpenSees/SRC/element/dispBeamColumn/DispBeamColumn2d.h,v $ 00024 00025 // Written: MHS 00026 // Created: Feb 2001 00027 // 00028 // Description: This file contains the class definition for DispBeamColumn2d. 00029 // The element displacement field gives rise to constant axial strain and 00030 // linear curvature. 00031 00032 #ifndef DispBeamColumn2d_h 00033 #define DispBeamColumn2d_h 00034 00035 #ifndef _bool_h 00036 #include "bool.h" 00037 #endif 00038 00039 #include <Element.h> 00040 #include <Matrix.h> 00041 #include <Vector.h> 00042 #include <ID.h> 00043 #include <BeamIntegration.h> 00044 00045 class Node; 00046 class SectionForceDeformation; 00047 class CrdTransf2d; 00048 class Response; 00049 00050 class DispBeamColumn2d : public Element 00051 { 00052 public: 00053 DispBeamColumn2d(int tag, int nd1, int nd2, 00054 int numSections, SectionForceDeformation **s, 00055 BeamIntegration &bi, CrdTransf2d &coordTransf, 00056 double rho = 0.0); 00057 DispBeamColumn2d(); 00058 ~DispBeamColumn2d(); 00059 00060 const char *getClassType(void) const {return "DispBeamColumn2d";}; 00061 00062 int getNumExternalNodes(void) const; 00063 const ID &getExternalNodes(void); 00064 Node **getNodePtrs(void); 00065 00066 int getNumDOF(void); 00067 void setDomain(Domain *theDomain); 00068 00069 // public methods to set the state of the element 00070 int commitState(void); 00071 int revertToLastCommit(void); 00072 int revertToStart(void); 00073 00074 // public methods to obtain stiffness, mass, damping and residual information 00075 int update(void); 00076 const Matrix &getTangentStiff(void); 00077 const Matrix &getInitialStiff(void); 00078 const Matrix &getMass(void); 00079 00080 void zeroLoad(); 00081 int addLoad(ElementalLoad *theLoad, double loadFactor); 00082 int addInertiaLoadToUnbalance(const Vector &accel); 00083 00084 const Vector &getResistingForce(void); 00085 const Vector &getResistingForceIncInertia(void); 00086 00087 // public methods for element output 00088 int sendSelf(int commitTag, Channel &theChannel); 00089 int recvSelf(int commitTag, Channel &theChannel, FEM_ObjectBroker 00090 &theBroker); 00091 int displaySelf(Renderer &theViewer, int displayMode, float fact); 00092 void Print(OPS_Stream &s, int flag =0); 00093 00094 Response *setResponse(const char **argv, int argc, Information &eleInfo, OPS_Stream &s); 00095 int getResponse(int responseID, Information &eleInfo); 00096 00097 // AddingSensitivity:BEGIN ////////////////////////////////////////// 00098 int setParameter(const char **argv, int argc, Parameter ¶m); 00099 int updateParameter(int parameterID, Information &info); 00100 int activateParameter(int parameterID); 00101 const Vector & getResistingForceSensitivity(int gradNumber); 00102 const Matrix & getKiSensitivity(int gradNumber); 00103 const Matrix & getMassSensitivity(int gradNumber); 00104 int commitSensitivity(int gradNumber, int numGrads); 00105 // AddingSensitivity:END /////////////////////////////////////////// 00106 00107 protected: 00108 00109 private: 00110 const Matrix &getInitialBasicStiff(void); 00111 00112 int numSections; 00113 SectionForceDeformation **theSections; // pointer to the ND material objects 00114 CrdTransf2d *crdTransf; // pointer to coordinate tranformation object 00115 00116 BeamIntegration *beamInt; 00117 00118 ID connectedExternalNodes; // Tags of quad nodes 00119 00120 Node *theNodes[2]; 00121 00122 static Matrix K; // Element stiffness, damping, and mass Matrix 00123 static Vector P; // Element resisting force vector 00124 00125 Vector Q; // Applied nodal loads 00126 Vector q; // Basic force 00127 double q0[3]; // Fixed end forces in basic system 00128 double p0[3]; // Reactions in basic system 00129 00130 double rho; // Mass density per unit length 00131 00132 static double workArea[]; 00133 00134 // AddingSensitivity:BEGIN ////////////////////////////////////////// 00135 int parameterID; 00136 // AddingSensitivity:END /////////////////////////////////////////// 00137 }; 00138 00139 #endif 00140
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