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Postbuckling analysis and optimization of laminated composite plates with applications in aerospace

Wu, Zhangming 2020. Postbuckling analysis and optimization of laminated composite plates with applications in aerospace. Polymer Composites in the Aerospace Industry (Second Edition), Woodhead Publishing Series in Composites Science and Engineering, Woodhead Publishing Ltd, pp. 123-146. (10.1016/B978-0-08-102679-3.00006-X)

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Abstract

In aerospace applications, thin plate-like structures are widely used and often undergo large transverse deflections and have to carry considerable loads. In conventional design practices, buckling is often considered as a final failure of structural members. However, there may be considerable load capacity, particularly for plate-like structures, beyond buckling limit before final failure occurs. Therefore, it has been a common practice in aerospace to further explore the load-carrying capacity, or, in other words, the weight-savings by allowing the structures to operate in their postbuckling regime. The further load-carrying capacity of thin-walled plates/structures in the postbuckling regime makes them very attractive in the design of lightweight aero-structures, which have continuously been in demand in the aerospace industry.For example, lighter, thinner, still stronger skins can be used in wings and fuselages. On the other hand, solid knowledge and deep understanding of the postbuckling behavior of the thin-walled plates/structures must be acquired before performing the optimal design of such nonlinear structural performance. Laminated composite materials are increasingly used in the aviation and aerospace industry as the primary load-carrying components, due to their high strength-to-weight ratios and large stiffness tailoring flexibility. Driven by advanced manufacturing technologies, many novel composite materials with increased design flexibility and functionality, such as functionally graded materials, variable angle tow composites, and 3D-printed composites, have been developed. These novel composite materials provide extensive opportunities for designers to obtain desirable postbuckling performance for future aerospace structures.

Item Type: Book Section
Date Type: Published Online
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: Woodhead Publishing Ltd
ISBN: 9780081026793
Last Modified: 09 Mar 2020 12:45
URI: http://orca-mwe.cf.ac.uk/id/eprint/130220

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