Page 120 - Using ANSYS for Finite Element Analysis Dynamic, Probabilistic, Design and Heat Transfer Analysis

probabilistic Design analysis • 107
review the correlation data that has been used to derive sensitivities and
decide if individual sensitivity values are significant or not. This infor-
mation is collected in the correlation matrix of the RPSs versus the RVs.
The PDS also lets you review the correlations that have been sampled
between RVs, which are stored in the RVs correlation matrix. The cor-
relations between RPs are important if you want to use the probabilistic
results of your probabilistic analysis as input for another probabilistic
analysis.

3.6 tutoriaL 4: ProBaBiListiC design
anaLysis of CirCuLar PLate Bending

In this tutorial, a circular plate of thickness t with a center hole is rigidly
attached along the inner edge and unsupported along the outer edge. The
plate is subjected to bending by a moment M applied uniformly along
a
the outer edge. The input parameters are subject to uncertainty. Measure-
ments show that the plate dimensions can vary significantly. Specimen
tests show that the material properties can also vary. The applied force is
also subject to uncertainty. You will determine the variation of the output
parameters given the uncertainty of the plate dimensions, material proper-
ties, and applied force. The output parameters that you will study are the
maximum deflection of the plate and the maximum equivalent stress at the
clamped edge.

Y Z

M a M a
a
X
b
b t
a

Geometric properties Value Distribution
Inner radius (b) 100.0±0.1 mm Uniform
Outer radius (a) 300.0±0.1 mm Uniform
Thickness (t) 1.0±0.1 mm Uniform