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Multilevel framework for optimization of lightweight structures

Fischer, M., Kennedy, David and Featherston, Carol Ann 2012. Multilevel framework for optimization of lightweight structures. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 226 (4) , pp. 380-394. 10.1177/0954410011411637

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Abstract

Optimization of aerospace and lightweight structures, such as aircraft wings, is typically best carried out via a multilevel process. This becomes necessary owing to the complexity of the structure and potentially very large numbers of design variables. While more conventional analysis and design procedures are often based on the computationally expensive finite element method, specialist software, such as the ‘exact’ strip program VICONOPT, provides faster and more efficient alternatives for structural components such as wing panels. With ever-increasing computational power, different software solutions can be integrated by means of robust and easy-to-use interfaces, allowing the user to benefit from more versatile optimization environments. The computer program Viconopt MLO establishes a multilevel framework for optimization by interfacing the panel analysis and design software VICONOPT and the finite element software MSC/NASTRAN. In this paper the underlying principles of the optimization procedure in Viconopt MLO are described, and the software's capability is demonstrated through the optimization of a composite aircraft wing.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Uncontrolled Keywords: exact strip; finite element analysis; optimization; composite
Publisher: Sage
ISSN: 0954-4100
Last Modified: 12 Sep 2019 21:05
URI: http://orca.cf.ac.uk/id/eprint/45228

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