OpenSees » SRC » reliability » analysis » stepSize

ArmijoStepSizeRule.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 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 23:45:44 $
00027 // $Source: /usr/local/cvs/OpenSees/SRC/reliability/analysis/stepSize/ArmijoStepSizeRule.h,v $
00028 
00029 
00030 //
00031 // Written by Terje Haukaas (haukaas@ce.berkeley.edu)
00032 //
00033 
00034 #ifndef ArmijoStepSizeRule_h
00035 #define ArmijoStepSizeRule_h
00036 
00037 #include <StepSizeRule.h>
00038 #include <GFunEvaluator.h>
00039 #include <GradGEvaluator.h>
00040 #include <ProbabilityTransformation.h>
00041 #include <MeritFunctionCheck.h>
00042 #include <RootFinding.h>
00043 
00044 class ArmijoStepSizeRule : public StepSizeRule
00045 {
00046 
00047 public:
00048         ArmijoStepSizeRule(GFunEvaluator *passedGFunEvaluator, 
00049                 ProbabilityTransformation *theProbabilityTransformation,
00050                 MeritFunctionCheck *theMeritFunctionCheck,
00051                 RootFinding *theRootFindingAlgorithm, 
00052                 double base,
00053                 int maxNumReductions,
00054                 double b0,
00055                 int numberOfShortSteps,
00056                 double radius,
00057                 double surfaceDistance,
00058                 double evolution,
00059                 int printFlag);
00060                 
00061         ~ArmijoStepSizeRule();
00062 
00063         int             computeStepSize(Vector u, Vector grad_G, double G, Vector d, int stepNumber);
00064         double  getStepSize();
00065         double  getInitialStepSize();
00066         double  getGFunValue();
00067 
00068 protected:
00069 
00070 private:
00071         double stepSize;
00072         GFunEvaluator *theGFunEvaluator;
00073         GradGEvaluator *theGradGEvaluator;
00074         ProbabilityTransformation *theProbabilityTransformation;
00075         MeritFunctionCheck *theMeritFunctionCheck;
00076         RootFinding *theRootFindingAlgorithm;
00077         double gFunValue;
00078         double base;
00079         int maxNumReductions;
00080         double b0;
00081         int numberOfShortSteps;
00082         double radius;
00083         double surfaceDistance;
00084         double evolution;
00085         bool isCloseToSphere;
00086         int printFlag;
00087 
00088 };
00089 
00090 #endif

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