SSJ API Documentation
Stochastic Simulation in Java
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umontreal.ssj.randvar.FatigueLifeGen Class Reference

This class implements random variate generators for the fatigue life distribution [19]  with location parameter \(\mu\), scale parameter \(\beta\) and shape parameter \(\gamma\). More...

Inheritance diagram for umontreal.ssj.randvar.FatigueLifeGen:
umontreal.ssj.randvar.RandomVariateGen

Public Member Functions

 FatigueLifeGen (RandomStream s, double mu, double beta, double gamma)
 Creates a fatigue life random variate generator with parameters.
 FatigueLifeGen (RandomStream s, FatigueLifeDist dist)
 Creates a new generator for the distribution dist, using stream s.
double getBeta ()
 Returns the parameter \(\beta\) of this object.
double getGamma ()
 Returns the parameter \(\gamma\) of this object.
double getMu ()
 Returns the parameter \(\mu\) of this object.
Public Member Functions inherited from umontreal.ssj.randvar.RandomVariateGen
 RandomVariateGen (RandomStream s, Distribution dist)
 Creates a new random variate generator from the distribution dist, using stream s.
double nextDouble ()
 Generates a random number from the continuous distribution contained in this object.
void nextArrayOfDouble (double[] v, int start, int n)
 Generates n random numbers from the continuous distribution contained in this object.
double[] nextArrayOfDouble (int n)
 Generates n random numbers from the continuous distribution contained in this object, and returns them in a new array of size n.
RandomStream getStream ()
 Returns the umontreal.ssj.rng.RandomStream used by this generator.
void setStream (RandomStream stream)
 Sets the umontreal.ssj.rng.RandomStream used by this generator to stream.
Distribution getDistribution ()
 Returns the umontreal.ssj.probdist.Distribution used by this generator.
String toString ()
 Returns a String containing information about the current generator.

Static Public Member Functions

static double nextDouble (RandomStream s, double mu, double beta, double gamma)
 Generates a variate from the fatigue life distribution with location parameter \(\mu\), scale parameter \(\beta\) and shape parameter \(\gamma\).

Protected Member Functions

void setParams (double mu, double beta, double gamma)
 Sets the parameters \(\mu\), \(\beta\) and \(\gamma\) of this object.

Detailed Description

This class implements random variate generators for the fatigue life distribution [19]  with location parameter \(\mu\), scale parameter \(\beta\) and shape parameter \(\gamma\).

The density function of this distribution is

\[ f(x) = \left[\frac{\sqrt{(x - \mu)/{\beta}} + \sqrt{{\beta}/{(x - \mu)}}}{2\gamma(x - \mu)}\right] \phi\left(\frac{\sqrt{{(x - \mu)}/{\beta}} - \sqrt{{\beta}/{(x - \mu)}}}{\gamma}\right), \qquad x > \mu\tag{fFatigueLife} \]

where \(\phi\) is the probability density of the standard normal distribution.

Definition at line 47 of file FatigueLifeGen.java.

Constructor & Destructor Documentation

◆ FatigueLifeGen() [1/2]

umontreal.ssj.randvar.FatigueLifeGen.FatigueLifeGen ( RandomStream s,
double mu,
double beta,
double gamma )

Creates a fatigue life random variate generator with parameters.

\(\mu=\) mu, \(\beta\) = beta and \(\gamma\) = gamma, using stream s.

Definition at line 58 of file FatigueLifeGen.java.

◆ FatigueLifeGen() [2/2]

umontreal.ssj.randvar.FatigueLifeGen.FatigueLifeGen ( RandomStream s,
FatigueLifeDist dist )

Creates a new generator for the distribution dist, using stream s.

Definition at line 66 of file FatigueLifeGen.java.

Member Function Documentation

◆ getBeta()

double umontreal.ssj.randvar.FatigueLifeGen.getBeta ( )

Returns the parameter \(\beta\) of this object.

Definition at line 84 of file FatigueLifeGen.java.

◆ getGamma()

double umontreal.ssj.randvar.FatigueLifeGen.getGamma ( )

Returns the parameter \(\gamma\) of this object.

Definition at line 91 of file FatigueLifeGen.java.

◆ getMu()

double umontreal.ssj.randvar.FatigueLifeGen.getMu ( )

Returns the parameter \(\mu\) of this object.

Definition at line 98 of file FatigueLifeGen.java.

◆ nextDouble()

double umontreal.ssj.randvar.FatigueLifeGen.nextDouble ( RandomStream s,
double mu,
double beta,
double gamma )
static

Generates a variate from the fatigue life distribution with location parameter \(\mu\), scale parameter \(\beta\) and shape parameter \(\gamma\).

Definition at line 77 of file FatigueLifeGen.java.

◆ setParams()

void umontreal.ssj.randvar.FatigueLifeGen.setParams ( double mu,
double beta,
double gamma )
protected

Sets the parameters \(\mu\), \(\beta\) and \(\gamma\) of this object.

Definition at line 105 of file FatigueLifeGen.java.


The documentation for this class was generated from the following file: