This paper presents an optimization formulation for the design of large com
posite panels when loads vary over the panel. A methodology termed "blendin
g" is introduced and used to ensure that a panel is manufacturable. Two way
s of specifying the blending rules in optimal design formulation are set fo
rth and compared. A global optimization algorithm, Improving Hit-and-Run (I
HR), is used to find optimal designs. A composite panel is designed with an
d without using blending rules to demonstrate their effectiveness. The resu
lting designs show that blending rules are a great assistance in designing
large composite panels that are tailored for varying loads in a practical m
anner. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.