PEER NEES NEESit

• HOME
• USER
• DEVELOPER
• PROJECTS
• SUPPORT
• SITE MAP

• Dev Doc
• API
• Source
• Download
• Builds
• Bug Reports
• Message Board

BeamColumnJoint2d.h Go to the documentation of this file. /* ****************************************************************** ** ** OpenSees - Open System for Earthquake Engineering Simulation ** ** Pacific Earthquake Engineering Research Center ** ** ** ** ** ** (C) Copyright 1999, The Regents of the University of California ** ** All Rights Reserved. ** ** ** ** Commercial use of this program without express permission of the ** ** University of California, Berkeley, is strictly prohibited. See ** ** file 'COPYRIGHT' in main directory for information on usage and ** ** redistribution, and for a DISCLAIMER OF ALL WARRANTIES. ** ** ** ** Developed by: ** ** Frank McKenna (fmckenna@ce.berkeley.edu) ** ** Gregory L. Fenves (fenves@ce.berkeley.edu) ** ** Filip C. Filippou (filippou@ce.berkeley.edu) ** ** ** ** ****************************************************************** */ // $Revision: 1.3 $ // $Date: 2006/08/04 22:22:37 $ // $Source: /usr/local/cvs/OpenSees/SRC/element/joint/BeamColumnJoint2d.h,v $ // Written: NM (nmitra@u.washington.edu) // Created: April 2002 // Revised: August 2004 // // Description: This file contains the class defination for beam-column joint. // This element is a 4 noded 12 dof (3 dof at each node) finite area super-element introduced by // Prof. Lowes and Arash. The element takes in 13 different material types in order to simulate // the inelastic action observed in a reinforced beam column joint. // Updates: Several concerning Joint formulation (presently a revised formulation for joints) #ifndef BeamColumnJoint2d_h #define BeamColumnJoint2d_h #include <Element.h> #include <ID.h> #include <Matrix.h> #include <Vector.h> #include <FileStream.h> #include <OPS_Stream.h> class Node; class Channel; class FEM_ObjectBroker; class Response; class Renderer; class UniaxialMaterial; class BeamColumnJoint2d : public Element { public: // default constructor BeamColumnJoint2d(); // defined constructor BeamColumnJoint2d(int tag,int Nd1, int Nd2, int Nd3, int Nd4, UniaxialMaterial& theMat1, UniaxialMaterial& theMat2, UniaxialMaterial& theMat3, UniaxialMaterial& theMat4, UniaxialMaterial& theMat5, UniaxialMaterial& theMat6, UniaxialMaterial& theMat7, UniaxialMaterial& theMat8, UniaxialMaterial& theMat9, UniaxialMaterial& theMat10, UniaxialMaterial& theMat11, UniaxialMaterial& theMat12, UniaxialMaterial& theMat13); BeamColumnJoint2d(int tag,int Nd1, int Nd2, int Nd3, int Nd4, UniaxialMaterial& theMat1, UniaxialMaterial& theMat2, UniaxialMaterial& theMat3, UniaxialMaterial& theMat4, UniaxialMaterial& theMat5, UniaxialMaterial& theMat6, UniaxialMaterial& theMat7, UniaxialMaterial& theMat8, UniaxialMaterial& theMat9, UniaxialMaterial& theMat10, UniaxialMaterial& theMat11, UniaxialMaterial& theMat12, UniaxialMaterial& theMat13, double Hgtfac, double Wdtfac); // default destructor ~BeamColumnJoint2d(); const char *getClassType(void) const {return "BeamColumnJoint2d";}; bool isSubdomain(void) { return false; } ; // get number of external nodes int getNumExternalNodes(void) const; // return connected external nodes const ID &getExternalNodes(void); Node **getNodePtrs(void); // return number of DOFs int getNumDOF(void); // set domain performs check on dof and associativity with node void setDomain(Domain *theDomain); // commit state int commitState(void); // revert to last commit int revertToLastCommit(void); // revert to start int revertToStart(void); // determine current strain and set strain in material int update(void); // returns converged tangent stiffness matrix const Matrix &getTangentStiff(void); const Matrix &getInitialStiff(void); // not required for this element formulation const Matrix &getDamp(void); const Matrix &getMass(void); // not required for this element formulation void zeroLoad(void); int addLoad(ElementalLoad *theLoad, double loadFactor); int addInertiaLoadToUnbalance(const Vector &accel); // get converged residual const Vector &getResistingForce(void); // get converged residual with inertia terms const Vector &getResistingForceIncInertia(void); // public methods for element output for parallel and database processing int sendSelf(int commitTag, Channel &theChannel); int recvSelf(int commitTag, Channel &theChannel, FEM_ObjectBroker &theBroker); // display element graphically int displaySelf(Renderer &theViewer, int displayMode, float fact); // print out element data void Print(OPS_Stream &s, int flag =0); // implemented to print into file Response *setResponse(const char **argv, int argc, Information &eleInfo, OPS_Stream &s); int getResponse(int responseID, Information &eleInformation); int setParameter (char **argv, int argc, Information &info); int updateParameter (int parameterID, Information &info); protected: private: // private methods void getGlobalDispls(Vector&) ; void getBCJoint(void); void getdg_df(void); void getdDef_du(void); void matDiag(Vector, Matrix&); void getMatResponse(Vector, Vector&, Vector&); void formR(Vector); void formK(Vector); double getStepSize(double,double,Vector,Vector,Vector,Vector,double); // material info UniaxialMaterial **MaterialPtr; // pointer to the 13 different materials // node info ID connectedExternalNodes; // contains the tags of the end nodes Node* nodePtr[4]; // pointers to four nodes int nodeDbTag, dofDbTag; // various other element parameters double elemActHeight; double elemActWidth; double elemWidth; double elemHeight; double HgtFac; // distance in between the tension compression couple in the height direction double WdtFac; // distance in between the tension compression couple in the width direction Vector Uecommit; // vector of external commited displacements Vector UeIntcommit; // vector of internal commited displacements Vector UeprCommit; // vector of previous external committed displacements Vector UeprIntCommit; // vector of previous internal committed displacements Matrix BCJoint; // matrix describing relation between the component deformations and the external and internal deformations Matrix dg_df; // matrix of derivative of internal equilibrium Matrix dDef_du; // matrix of a portion of BCJoint reqd. for static condensation Matrix K; // element stiffness matrix Vector R; // element residual matrix }; #endif Generated on Mon Oct 23 15:05:07 2006 for OpenSees by  1.5.0

---

opensees-support @ berkeley.edu

Supported by the National Science Foundation

©2006, UC Regents