How can I use the Monte Carlo Simulation
utility in Weibull++ for risk analysis, probabilistic design and
The Monte Carlo simulation tool in
is a flexible utility that you can use to automatically generate
a data set for a specified distribution and parameters. You can
also use this tool for relationship-based simulations that are
useful for risk analysis, probabilistic design and quality
Specifically, the Monte Carlo utility’s "User Defined"
distribution feature allows you to specify an equation relating
different random variables. You can then determine the joint
pdf for the simulated data set. This type of simulation has
many applications in probabilistic design, risk analysis,
quality control, etc.
For example, suppose that you have a hinge containing four
components: A, B, C and D. You have information about the range
of widths that have been observed for the components and you
need to estimate the number of times that the combined widths of
A, B and C will be greater than D.
You can enter the component measurements from several
hinges into separate data sheets in a Weibull++
Folio. Next, you can generate two sets of Monte Carlo
data: the first can be created by using the "User
Defined" distribution option to combine the
distributions data from Components A, B and C (as shown
below) and the second can be created based on the data
from Component D.
You open the Monte Carlo window by choosing
Tools > Generate Monte Carlo Data. Then choose
User Defined from the
Distribution drop-down list and enter the
equation in the Parameters area.
After generating the Monte Carlo data sets, you can use
the Comparison Wizard to estimate the number of times
A+B+C will be greater than D.
After generating the Folios, you open the Comparison
Wizard by choosing Tools > Tests of Comparison.
You can then select the appropriate Data Sheets for
For a full summary of this example, refer to the Hinge
(Simulation and Test of Comparison).rwp file, located in
the Examples\Other Tools\Simulation folder within the
application directory (e.g. C:\Program
For more information about using the Monte Carlo
simulation tool, refer to the Weibull++ User’s Guide.
How do I configure my software to display the
interface in another language?
Several of ReliaSoft’s products (Weibull++,
provide the software interface translated to other
languages in addition to English. The "Multi-Language
Support for Reliability Software from ReliaSoft" page,
provides the most up-to-date information about which
languages are supported in each product. (Note that
additional language support will be added in future
When you install the ReliaSoft product, it will
automatically detect the version of Windows® you are
using and enable the matching language if it is
available. For example, if you are using the French
version of Windows and the ReliaSoft product is
available with a French interface, the French interface
will automatically be enabled by default. (If you are
using a language that is not yet available for the
ReliaSoft product, the English language interface will
be enabled by default.)
You can change the interface language from with the
ReliaSoft product interface by choosing File >
User Setup and then clicking the Other
page, such as shown in the Weibull++ User Setup window
below. Use the Language field to select
the desired language.
Click OK to save the change. Note that
you must close the application and restart it for
the interface language change to take effect.