OpenSees » SRC » reliability » analysis » stepSize

FixedStepSizeRule.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: 1.6 $
00026 // $Date: 2003/10/27 23:45:44 $
00027 // $Source: /usr/local/cvs/OpenSees/SRC/reliability/analysis/stepSize/FixedStepSizeRule.cpp,v $
00028 
00029 
00030 //
00031 // Written by Terje Haukaas (haukaas@ce.berkeley.edu)
00032 //
00033 
00034 #include <FixedStepSizeRule.h>
00035 #include <StepSizeRule.h>
00036 #include <ProbabilityTransformation.h>
00037 #include <math.h>
00038 #include <Vector.h>
00039 
00040 
00041 FixedStepSizeRule::FixedStepSizeRule(double passedStepSize)
00042 :StepSizeRule()
00043 {
00044         stepSize = passedStepSize;
00045         gFunValue = -1;
00046 }
00047 
00048 FixedStepSizeRule::~FixedStepSizeRule()
00049 {
00050 }
00051 
00052 
00053 
00054 int
00055 FixedStepSizeRule::computeStepSize(Vector u, 
00056                                                                         Vector grad_G, 
00057                                                                         double G, 
00058                                                                         Vector d,
00059                                                                         int stepNumber)
00060 {
00061         // This method is in fact not neccesary 
00062         // for the fixed step size rule. The 
00063         // user has already given the step size. 
00064 
00065         return 0;  
00066 
00067 }
00068 
00069 
00070 double
00071 FixedStepSizeRule::getStepSize()
00072 {
00073         return stepSize;
00074 
00075 }
00076 
00077 
00078 double
00079 FixedStepSizeRule::getInitialStepSize()
00080 {
00081         return stepSize;
00082 
00083 }
00084 
00085 double
00086 FixedStepSizeRule::getGFunValue()
00087 {
00088         return 0.0;
00089 }
00090

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