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Broyden.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 **                                                                    **
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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 **                                                                    **
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00020                                                                         
00021 // $Revision: 1.3 $
00022 // $Date: 2005/11/29 22:42:41 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/analysis/algorithm/equiSolnAlgo/Broyden.h,v $
00024                                                                         
00025 #ifndef Broyden_h
00026 #define Broyden_h
00027 
00028 // File: ~/OOP/analysis/algorithm/Broyden.h 
00029 // 
00030 // Written: Ed C++ Love
00031 // Created: 04/01
00032 
00033 // Description: This file contains the class definition for
00034 // Broyden.  Broyden is a class which performs the Broyden
00035 // solution algorihm in solving the equations.
00036 // No member functions are declared as virtual as 
00037 // it is not expected that this class will be subclassed.
00038 // 
00039 // What: "@(#)Broyden.h, revA"
00040 
00041 #include <EquiSolnAlgo.h>
00042 #include <Vector.h>
00043 #include <IncrementalIntegrator.h>
00044 #include <LinearSOE.h> 
00045 
00046 class Broyden: public EquiSolnAlgo
00047 {
00048   public:
00049 
00050     Broyden(int tangent = CURRENT_TANGENT, int n = 10 );    
00051 
00052     Broyden(ConvergenceTest &theTest, int tangent = CURRENT_TANGENT, int n = 10 );
00053 
00054     ~Broyden();
00055 
00056     int solveCurrentStep(void);    
00057 
00058     
00059     int setConvergenceTest(ConvergenceTest *theNewTest);
00060     ConvergenceTest *getConvergenceTest(void);     
00061     
00062     virtual int sendSelf(int commitTag, Channel &theChannel);
00063     virtual int recvSelf(int commitTag, Channel &theChannel, 
00064                          FEM_ObjectBroker &theBroker);
00065 
00066     void Print(OPS_Stream &s, int flag =0);    
00067     
00068   protected:
00069     
00070   private:
00071 
00072     ConvergenceTest *theTest;
00073 
00074     ConvergenceTest *localTest ;
00075 
00076     int tangent ;
00077 
00078     int numberLoops ; //number of Broyden iterations
00079 
00080     Vector **s ;  //displacement increments
00081 
00082     Vector **z ;  
00083 
00084     Vector *residOld ;  //residuals
00085     Vector *residNew ;
00086 
00087     Vector *du ; //displacement increment
00088 
00089     Vector *temp ; //temporary vector
00090 
00091     void BroydenUpdate( IncrementalIntegrator *theIntegrator,
00092                         LinearSOE *theSOE,
00093                         Vector &du, 
00094                         int count ) ;
00095   
00096 };
00097 
00098 #endif
00099 
00100

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