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LimitStateFunction.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: 1.6 $
00026 // $Date: 2003/10/27 23:04:38 $
00027 // $Source: /usr/local/cvs/OpenSees/SRC/reliability/domain/components/LimitStateFunction.h,v $
00028 
00029 
00030 //
00031 // Written by Terje Haukaas (haukaas@ce.berkeley.edu)
00032 //
00033 
00034 #ifndef LimitStateFunction_h
00035 #define LimitStateFunction_h
00036 
00037 #include <ReliabilityDomainComponent.h>
00038 #include <Vector.h>
00039 //#include <fstream>
00040 
00041 class LimitStateFunction : public ReliabilityDomainComponent
00042 {
00043 
00044 public:
00045         LimitStateFunction(     int tag, 
00046                                                 TCL_Char *expression);
00047         ~LimitStateFunction();
00048         void Print(OPS_Stream &s, int flag =0);
00049 
00050         // Method to get/add limit-state function
00051         char *getExpression();
00052         char *getTokenizedExpression();
00053         int addExpression(char *expression);
00054         int removeAddedExpression();
00055 
00056         // FORM analysis:
00057         double GFunValueAtStartPt;
00058         double GFunValueAtEndPt;
00059         double FORMReliabilityIndexBeta;
00060         double FORMProbabilityOfFailure_pf1;
00061         Vector designPoint_x_inOriginalSpace;
00062         Vector designPoint_u_inStdNormalSpace;
00063         Vector normalizedNegativeGradientVectorAlpha;
00064         Vector importanceVectorGamma;
00065         int numberOfStepsToFindDesignPointAlgorithm;
00066         
00067         // From Simulation analysis:
00068         double SimulationReliabilityIndexBeta;
00069         double SimulationProbabilityOfFailure_pfsim;
00070         double CoefficientOfVariationOfPfFromSimulation;
00071         int NumberOfSimulations;
00072         
00073         // From SORM analysis:
00074         double SORMCurvatureFittingBetaBreitung;
00075         double SORMCurvatureFittingPf2Breitung;
00076         double SORMPointFittingBetaBreitung;
00077         double SORMPointFittingPf2Breitung;
00078         double SORMUsingSearchBetaBreitung;
00079         double SORMUsingSearchPf2Breitung;
00080         Vector lastSearchDirection;
00081         int numberOfCurvatauresUsed;
00082         Vector secondLast_u;
00083         Vector secondLastAlpha;
00084 
00085 protected:
00086 
00087 private:
00088 
00089         int tokenizeIt(TCL_Char *expression);
00090 
00091         char *originalExpression;
00092         char *tokenizedExpression;
00093         char *expressionWithAddition;
00094 
00095 };
00096 
00097 #endif

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