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EigenIntegrator.h

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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: 1.2 $
00022 // $Date: 2003/02/14 23:00:48 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/analysis/integrator/EigenIntegrator.h,v $
00024                                                                         
00025                                                                         
00026 // File: ~/analysis/integrator/eigenIntegrator/EigenIntegrator.h
00027 //
00028 // Written: Jun Peng
00029 // Created: Wed Jan 27, 1999
00030 // Revision: A
00031 //
00032 // Description: This file contains the class definition of EigenIntegrator.
00033 // EigenIntegrator is an algorithmic class for setting up the finite element 
00034 // equations for a eigen problem analysis. 
00035 //
00036 // This class is inheritanted from the base class of Integrator which was
00037 // created by fmk (Frank).
00038 
00039 
00040 #ifndef EigenIntegrator_h
00041 #define EigenIntegrator_h
00042 
00043 #include <Integrator.h>
00044 
00045 class EigenSOE;
00046 class AnalysisModel;
00047 class FE_Element;
00048 class DOF_Group;
00049 class Vector;
00050 
00051 class EigenIntegrator : public Integrator
00052 {
00053   public:
00054      EigenIntegrator();
00055      virtual ~EigenIntegrator();
00056      
00057      virtual void setLinks(AnalysisModel &theModel,
00058                            EigenSOE &theSOE);
00059        
00060      // methods to form the M and K matrices.
00061      virtual int formK();
00062      virtual int formM();
00063      
00064      // methods to instruct the FE_Element and DOF_Group objects
00065      // how to determing their contribution to M and K
00066      virtual int formEleTangK(FE_Element *theEle);
00067      virtual int formEleTangM(FE_Element *theEle);
00068      virtual int formNodTangM(DOF_Group *theDof);
00069      virtual int update(const Vector &deltaU);
00070 
00071      virtual int formEleTangent(FE_Element *theEle);
00072      virtual int formNodTangent(DOF_Group *theDof);
00073      virtual int formEleResidual(FE_Element *theEle);
00074      virtual int formNodUnbalance(DOF_Group *theDof);
00075 
00076      virtual int newStep(void);
00077      
00078      virtual int getLastResponse(Vector &result, const ID &id);
00079 
00080      virtual int sendSelf(int commitTag, Channel &theChannel);
00081      virtual int recvSelf(int commitTag, Channel &theChannel,
00082                           FEM_ObjectBroker &theBroker);     
00083      virtual void Print(OPS_Stream &s, int flag = 0);
00084      
00085  protected:
00086      virtual EigenSOE *getEigenSOEPtr() const;
00087      virtual AnalysisModel *getAnalysisModelPtr() const;
00088   
00089  private:
00090      EigenSOE *theSOE;
00091      AnalysisModel *theAnalysisModel;
00092      int flagK;
00093 
00094 };
00095 
00096 #endif
00097 
00098 
00099 
00100

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