OpenSees » SRC » reliability » analysis » rootFinding

ModNewtonRootFinding.cpp

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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: 1.1 $
00026 // $Date: 2003/10/27 23:45:44 $
00027 // $Source: /usr/local/cvs/OpenSees/SRC/reliability/analysis/rootFinding/ModNewtonRootFinding.cpp,v $
00028 
00029 
00030 //
00031 // Written by Terje Haukaas (haukaas@ce.berkeley.edu) 
00032 //
00033 
00034 #include <ModNewtonRootFinding.h>
00035 #include <RootFinding.h>
00036 #include <GFunEvaluator.h>
00037 #include <ProbabilityTransformation.h>
00038 #include <ReliabilityDomain.h>
00039 #include <RandomVariable.h>
00040 #include <math.h>
00041 #include <Vector.h>
00042 
00043 
00044 ModNewtonRootFinding::ModNewtonRootFinding(
00045                                                 ReliabilityDomain *passedReliabilityDomain,
00046                                                 ProbabilityTransformation *passedProbabilityTransformation,
00047                                                 GFunEvaluator *passedGFunEvaluator,
00048                                                 int passedMaxIter,
00049                                                 double ptol,
00050                                                 double pmaxStepLength)
00051 :RootFinding()
00052 {
00053         theReliabilityDomain = passedReliabilityDomain;
00054         theProbabilityTransformation = passedProbabilityTransformation;
00055         theGFunEvaluator = passedGFunEvaluator;
00056         maxIter = passedMaxIter;
00057         tol = ptol;
00058         maxStepLength = pmaxStepLength;
00059 }
00060 
00061 ModNewtonRootFinding::~ModNewtonRootFinding()
00062 {
00063 }
00064 
00065 
00066 Vector
00067 ModNewtonRootFinding::findLimitStateSurface(int space, double g, Vector pDirection, Vector thePoint)
00068 {
00069         opserr << "Currently, the Modified Newton root-finding algorithm is not " << endln
00070                 << "implemented. This algorithm requires the directional gradient in " << endln
00071                 << "the direction of the root-finding search. For now; it is " << endln
00072                 << "recommended to use the Secant Root-Finding Algorithm." << endln;
00073         return thePoint;
00074 }
00075 
00076

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