A parametric study of optimum designs for benchmark stiffened wing panels

York, C.B., Williams, F.W., Kennedy, D. and Butler, R. (1993) A parametric study of optimum designs for benchmark stiffened wing panels. Composites Engineering, 3(7-8), pp. 619-632. (doi:10.1016/0961-9526(93)90086-Y)

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Abstract

Results are presented for the most heavily and lightly loaded of eight benchmark stiffened laminated wing panels defined from a Dornier wing by a GARTEUR working party. These benchmark panels had three identical and equally spaced blade stiffeners. The results were chosen to help designers to understand many important aspects of the choice of design variables, and of the effects of changing the sophistication of modelling and theory used, for a wide range of wing panels. The percentage changes of (global) optimum mass are presented, along with the final values of the design variables. Some examples of mass histories and of (rejected) local optimum masses are also given. The principal design variables are skin and blade ply thicknesses and blade height. Additional factors considered include the effects of: adding flanges to the blades whose plies either matched those of the blades or were allowed to vary independently; varying the number of stiffeners; allowing the stiffeners to differ from each other; varying stiffener spacing; varying some ply angles; including the stiffening effect of adjacent spars; including the effects of continuity with laterally adjacent panels; including through thickness shear deformation in the panel analysis; and analysing the panel with its true skewed shape rather than approximating it as rectangular in plan.

Item Type:Articles
Additional Information:Publication History: Continued as Composites Part B: Engineering;
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:York, Dr Christopher
Authors: York, C.B., Williams, F.W., Kennedy, D., and Butler, R.
Subjects:T Technology > T Technology (General)
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Composites Engineering
ISSN:0961-9526
ISSN (Online):1878-6359
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