Project 2

Defining Probabilistic Parameters and Distribution

Now we have to specify probabilistic distribution of alpha, width, length and external force.

Then click "Add...".


Length = gaussian distribution with SD = 10^-6

Width = gaussian distribution with SD = 10^-6

Alpha has a truncated gaussian distribution with mean value of 2.5degree, SD = 0.075 (having value between 2.3 and 2.75).

External force = lognormal distribution with mean value of 0.20E-2 and SD = 0.20E-3.

click ok. You will see this window. Click close.

Now define output variable.
Click on Problem Design -> Prob Definitns -> Random Output.

Click Add....

Click on B2EQUI. Now output we are focusing on is the dimension b2.

This is equivalent to typing "PDVAR, parameter_name, RESP" (RESP implies parameter 1through 4 will not be used)

To define probabilistic parameters, type: "PDVAR, Variable_name,Type_of_distribution,Param1,Param2,Param3,Param4".

Each distrubution requires different parameters, therefore, it is always good to check with ANSYS help. Type "help, PDVAR" in the command line to view PDVAR usage.