OpenSees » SRC » reliability » analysis » direction

PolakHeSearchDirectionAndMeritFunction.h

Go 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 2001, 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 ** Reliability module developed by:                                   **
00020 **   Terje Haukaas (haukaas@ce.berkeley.edu)                          **
00021 **   Armen Der Kiureghian (adk@ce.berkeley.edu)                       **
00022 **                                                                    **
00023 ** ****************************************************************** */
00024                                                                         
00025 // $Revision: 1.2 $
00026 // $Date: 2003/10/27 23:45:42 $
00027 // $Source: /usr/local/cvs/OpenSees/SRC/reliability/analysis/direction/PolakHeSearchDirectionAndMeritFunction.h,v $
00028 
00029 
00030 //
00031 // Written by Terje Haukaas (haukaas@ce.berkeley.edu) 
00032 //
00033 
00034 #ifndef PolakHeSearchDirectionAndMeritFunction_h
00035 #define PolakHeSearchDirectionAndMeritFunction_h
00036 
00037 #include <SearchDirection.h>
00038 #include <MeritFunctionCheck.h>
00039 #include <Vector.h>
00040 
00041 class PolakHeSearchDirectionAndMeritFunction : public SearchDirection, public MeritFunctionCheck
00042 {
00043 
00044 public:
00045         PolakHeSearchDirectionAndMeritFunction(double gamma, double delta);
00046         ~PolakHeSearchDirectionAndMeritFunction();
00047 
00048         int computeSearchDirection(     int stepNumber, 
00049                                                                 Vector passed_u, 
00050                                                                 double passed_gFunctionValue, 
00051                                                                 Vector passedGradientInStandardNormalSpace);
00052         Vector getSearchDirection();
00053 
00054         int     check(Vector u_old, 
00055                           double g_old, 
00056                           Vector grad_G_old, 
00057                           double stepSize,
00058                           Vector stepDirection,
00059                           double g_new);
00060         double getMeritFunctionValue(Vector u, double g, Vector grad_G);
00061         int updateMeritParameters(Vector u, double g, Vector grad_G);
00062 
00063         int setAlpha(double alpha);
00064 
00065 protected:
00066 
00067 private:
00068         Vector searchDirection;
00069         double thetaFunction;
00070         double alpha;
00071         double gamma;
00072         double delta;
00073 };
00074 
00075 #endif

Generated on Mon Oct 23 15:05:25 2006 for OpenSees by doxygen 1.5.0