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Experiments on imperfection insensitive axially loaded cylindrical shells

Ning, Xin and Pellegrino, Sergio (2017) Experiments on imperfection insensitive axially loaded cylindrical shells. International Journal of Solids and Structures, 115-116 . pp. 73-86. ISSN 0020-7683. doi:10.1016/j.ijsolstr.2017.02.028.

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This paper presents an experimental study of imperfection insensitive composite wavy cylindrical shells subject to axial compression. A fabrication technique for making cylindrical shells with intricate shape of cross-sections has been developed. A photogrammetry technique to measure the geometric imperfections has also been developed. The behavior of the wavy shells under axial compression was predicted through simulations and measured through compression tests. Both the analyses and experiments have confirmed that the wavy shells are imperfection insensitive. Comparisons between the wavy shells and circular shells have also confirmed that introducing optimal symmetry-breaking wavy cross-sections can significantly reduce the imperfection sensitivity and improve the load-bearing capability of cylindrical shells.

Item Type:Article
Related URLs:
URLURL TypeDescription
Ning, Xin0000-0002-9432-3665
Pellegrino, Sergio0000-0001-9373-3278
Additional Information:© 2017 Elsevier Ltd. Received 4 August 2015, Revised 1 May 2016, Accepted 28 February 2017, Available online 15 March 2017. We thank Professors P. Ermanni and M.M. Mikulas for help and advice during the course of this study. J. Steeves provided the lamina properties in Section 2.2 and the fiber misalignment data in Section 4.6.1. We thank R. Hurley and Professor J. Andrade for providing access to the high-speed camera. We also thank P. Arakelian, I. Maqueda, and K. Patterson for help and advice regarding shell manufacturing and testing. Financial support from the Resnick Institute at the California Institute of Technology is gratefully acknowledged.
Group:Resnick Sustainability Institute, GALCIT
Funding AgencyGrant Number
Resnick Sustainability InstituteUNSPECIFIED
Subject Keywords:Wavy shell; Imperfection; Compression test
Record Number:CaltechAUTHORS:20170526-080151216
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Official Citation:Xin Ning, Sergio Pellegrino, Experiments on imperfection insensitive axially loaded cylindrical shells, International Journal of Solids and Structures, Volumes 115–116, 1 June 2017, Pages 73-86, ISSN 0020-7683, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:77792
Deposited By: Tony Diaz
Deposited On:26 May 2017 16:51
Last Modified:15 Nov 2021 17:34

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