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A level set topology optimization method for the buckling of shell structures

Townsend, Scott and Kim, H. Alicia 2019. A level set topology optimization method for the buckling of shell structures. Structural and Multidisciplinary Optimization 60 (5) , pp. 1783-1800. 10.1007/s00158-019-02374-9

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Shell structures are some of the most widely used in engineering applications. Flat plates, stiffened panels, and wing ribs are each examples of components for which the design features may be dictated by the critical buckling load. Despite this practical significance, there exists only a handful of studies in the literature documenting applications of topology optimization which consider buckling performance. This is due to several issues innate to this domain, including mode switching, spurious behavior in void regions, and the presence of repeated eigenvalues. Herein, we propose a level set method capable of effectively optimizing structures despite these challenges in the context of linear buckling. We demonstrate the usefulness of such in the design of several common shell structures and explore the trade-off between stiffness and buckling load performance.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Springer Verlag (Germany)
ISSN: 1615-147X
Funders: EPSRC
Date of First Compliant Deposit: 12 September 2019
Date of Acceptance: 26 July 2019
Last Modified: 14 Dec 2020 02:25

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