OpenSees » SRC » reliability » domain » spectrum

NarrowBandSpectrum.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: 2003/03/04 00:44:51 $
00027 // $Source: /usr/local/cvs/OpenSees/SRC/reliability/domain/spectrum/NarrowBandSpectrum.cpp,v $
00028 
00029 
00030 //
00031 // Written by Terje Haukaas (haukaas@ce.berkeley.edu)
00032 //
00033 
00034 #include <NarrowBandSpectrum.h>
00035 #include <Spectrum.h>
00036 #include <Vector.h>
00037 #include <classTags.h>
00038 
00039 
00040 NarrowBandSpectrum::NarrowBandSpectrum(int tag, double min, double max, double ampl)
00041 :Spectrum(tag,SPECTRUM_constant)
00042 {
00043         minFreq = min;
00044         maxFreq = max;
00045         amplitude = ampl;
00046 }
00047 
00048 NarrowBandSpectrum::~NarrowBandSpectrum()
00049 {
00050 }
00051 
00052 void
00053 NarrowBandSpectrum::Print(OPS_Stream &s, int flag)  
00054 {
00055 }
00056 
00057 
00058 double
00059 NarrowBandSpectrum::getMinFrequency()
00060 {
00061         return minFreq;
00062 }
00063 
00064 
00065 double
00066 NarrowBandSpectrum::getMaxFrequency()
00067 {
00068         return maxFreq;
00069 }
00070 
00071 
00072 double
00073 NarrowBandSpectrum::getAmplitude(double frequency)
00074 {
00075         if (frequency < minFreq || frequency > maxFreq) {
00076                 return 0.0;
00077         }
00078         else {
00079                 return amplitude;
00080         }
00081 }

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