Abstract (EN):
Analysis of uncertainty propagation in Reliability-Based Design Optimization (RBDO) of
composite laminate structures is presented. Using the Uniform Design Method (UDM) a set
of design points is generated over a domain centred on the mean values of the random
variables aiming to study the space variability. An approach based on optimal design of
composite structures to achieve a specified reliability level is proposed and the corresponding
maximum load is outlined as a function of ply angle. Using the generated UDM design points
as input/output patterns an Artificial Neural Networks (ANN) is developed. The developed
ANN and a Monte Carlo procedure are used to analyse the variance of structural reliability
index and their relative sensitivities as a function of ply angle. Numerical examples showing
the utility of the approach applied to angle-ply laminates are presented.
Language:
English
Type (Professor's evaluation):
Scientific
No. of pages:
18