SSJ
3.3.1
Stochastic Simulation in Java
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This class implements random variate generators for the fatigue life distribution [20] with location parameter \(\mu\), scale parameter \(\beta\) and shape parameter \(\gamma\). More...
Public Member Functions | |
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 . | |
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 RandomVariateGen | |
RandomVariateGen (RandomStream s, Distribution dist) | |
Creates a new random variate generator from the distribution dist , using stream s . More... | |
double | nextDouble () |
Generates a random number from the continuous distribution contained in this object. More... | |
void | nextArrayOfDouble (double[] v, int start, int n) |
Generates n random numbers from the continuous distribution contained in this object. More... | |
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 . More... | |
RandomStream | getStream () |
Returns the umontreal.ssj.rng.RandomStream used by this generator. More... | |
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. More... | |
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. | |
Protected Attributes | |
double | mu |
double | beta |
double | gamma |
Protected Attributes inherited from RandomVariateGen | |
RandomStream | stream |
Distribution | dist |
This class implements random variate generators for the fatigue life distribution [20] 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.