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NLBeamColumn2d.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: 2001/03/29 03:56:11 $ // $Source: /usr/local/cvs/OpenSees/SRC/element/nonlinearBeamColumn/element/NLBeamColumn2d.h,v $ // File: ~/model/element/NLBeamColumn2d.h // // Written by Remo Magalhaes de Souza on 09/98 // Revised: rms 10/98 (uses section class) // rms 01/99 (with distributed loads) // rms 07/99 (using setDomain) // rms 08/99 (included P-Delta effect) // fmk 10/99 setResponse() & getResponse() // rms 11/99 (included rigid joint offsets) // rms 04/00 (using transformation class w/ linear or corotational transf) // rms 04/00 (generalized to iterative/non-iterative algorithm) // mhs 06/00 (using new section class w/ variable dimensions) // rms 06/00 (torsional stiffness considered at the section level) // rms 06/00 (making copy of the sections) // rms 06/00 (storing section history variables at the element level) // // // Purpose: This file contains the class definition for NLBeamColumn2d. // NLBeamColumn2d is a materially nonlinear flexibility based frame element. #ifndef NLBeamColumn2d_h #define NLBeamColumn2d_h #include <Element.h> #include <Node.h> #include <Matrix.h> #include <Vector.h> #include <Channel.h> #include <SectionForceDeformation.h> #include <CrdTransf2d.h> #include <Response.h> class NLBeamColumn2d: public Element { public: NLBeamColumn2d (); NLBeamColumn2d (int tag, int nodeI, int nodeJ, int numSections, SectionForceDeformation *sectionPtrs[], CrdTransf2d &coordTransf, double massDensPerUnitLength = 0.0, int maxNumIters = 1, double tolerance = 1e-10); ~NLBeamColumn2d(); int getNumExternalNodes(void) const; const ID &getExternalNodes(void); int getNumDOF(void); void setDomain(Domain *theDomain); int commitState(void); int revertToLastCommit(void); int revertToStart(void); int update(void); const Matrix &getTangentStiff(void); const Matrix &getSecantStiff(void); const Matrix &getDamp(void); const Matrix &getMass(void); void zeroLoad(void); int addLoad(const Vector &load); const Vector &getResistingForce(void); const Vector &getResistingForceIncInertia(void); bool isSubdomain(void); int sendSelf(int cTag, Channel &theChannel); int recvSelf(int cTag, Channel &theChannel, FEM_ObjectBroker &theBroker); int displaySelf(Renderer &theViewer, int displayMode, float fact); friend ostream &operator<<(ostream &s, NLBeamColumn2d &E); void Print(ostream &s, int flag =0); Response *setResponse(char **argv, int argc, Information &eleInformation); int getResponse(int responseID, Information &eleInformation); private: void getGlobalDispls(Vector &dg) const; void getGlobalAccels(Vector &ag) const; void getForceInterpolatMatrix(double xi, Matrix &b, const ID &code); void getDistrLoadInterpolatMatrix(double xi, Matrix &bp, const ID &code); void compSectionDisplacements(Vector sectionCoords[], Vector sectionDispls[]) const; void setSectionInterpolation (void); void initializeSectionHistoryVariables (void); ID connectedExternalNodes; int nSections; // number of sections (integration SectionForceDeformation **sections; /// array of pointers to sections CrdTransf2d *crdTransf; // pointer to coordinate tranformation object double rho; /// mass density per unit length int maxIters; double tol; double L; double cosTheta, sinTheta; int initialFlag; Node *node1Ptr, *node2Ptr; Matrix K; Matrix m; Matrix d; Vector P; Vector Pinert; Vector load; Vector prevDistrLoad; Vector Uepr; Matrix kv; Vector Se; Vector distrLoadcommit; Vector Uecommit; Matrix kvcommit; Vector Secommit; Matrix *b; Matrix *bp; Matrix *fs; Vector *vs; Vector *Ssr; Vector *vscommit; // array of commited section deformation vectors }; #endif ÿ

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