Buckling of composite domes with localised imperfections and subjected to external pressure

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• 作者：J. Błachut ^{em20@liverpool.ac.uk" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Buckling ; Composite domes ; External pressure ; Imperfection sensitivity
• 刊名：Composite Structures
• 出版年：2016
• 出版时间：1 October 2016
• 年：2016
• 卷：153
• 期：Complete
• 页码：746-754
• 全文大小：2028 K

文摘

It is shown that Force-Induced-Dimple (FID), initial geometric imperfection leads to a far worse deterioration of buckling strength (for up to four times) than currently used modulated eigenshape(s) or lower bound increased-radius shape deviations from perfect geometry. The FID approach provides not only safer estimates of buckling resistance but also it is efficient in terms of computing time for a range of shell geometries. The physics behind the FID-concept is closer to reality than in the other two approaches.