Experiments on imperfection insensitive axially loaded cylindrical shells

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 i...

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Bibliographic Details
Published inInternational journal of solids and structures Vol. 115-116; pp. 73 - 86
Main Authors Ning, Xin, Pellegrino, Sergio
Format Journal Article
LanguageEnglish
Published New York Elsevier Ltd 01.06.2017
Elsevier BV
Subjects
Circular shells
Compression test
Compression tests
Cross-sections
Cylindrical shells
Imperfection
Photogrammetry
Sensitivity analysis
Simulation
Studies
Wavy shell
Imperfection
Wavy shell
Compression test
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ISSN0020-7683
1879-2146
DOI10.1016/j.ijsolstr.2017.02.028

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Summary: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.
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ISSN:0020-7683
1879-2146
DOI:10.1016/j.ijsolstr.2017.02.028