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A Numerical–Analytical Approach for the Preliminary Design of Thin-Walled Cylindrical Shell Structures with Elliptical Cut-Outs

Department of Engineering, University of Campania “Luigi Vanvitelli”, via Roma 29, Aversa, Italy
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These authors contributed equally to this work.
Aerospace 2019, 6(5), 52; https://doi.org/10.3390/aerospace6050052
Received: 5 March 2019 / Revised: 26 April 2019 / Accepted: 29 April 2019 / Published: 6 May 2019
(This article belongs to the Special Issue Structural Stability of Aerospace Structures)
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Abstract

The presence of cut-outs within thin-walled shell structures is unavoidable, holes being needed for the passage of electrical cables, fuel, or just to reduce the weight of the components. Nevertheless, the high stress concentration can lead to a premature collapse of the structure. For this reason, the preliminary design of cylindrical shell structures with holes needs a profound knowledge of the stress distribution for different loading conditions and constraints. In this paper, a parametric study of a fiber-reinforced composite shell cylinder with an elliptical cut-out has been performed. Three different loading conditions were analyzed: Tension, bending, and torsion. Ansys® script, capable of easily generating and analyzing different geometrical configurations, was used to study the dependence of the geometry on the stress distribution near the cut-out. Finally, graphical and analytical relationships were tentatively extrapolated from numerical results, aimed at linking the geometrical parameters of the cut-out to the maximum stress near the cut-out. View Full-Text
Keywords: shell cylinder; cut-out; hole; stress concentration shell cylinder; cut-out; hole; stress concentration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Russo, A.; Sellitto, A.; Saputo, S.; Acanfora, V.; Riccio, A. A Numerical–Analytical Approach for the Preliminary Design of Thin-Walled Cylindrical Shell Structures with Elliptical Cut-Outs. Aerospace 2019, 6, 52.

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