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Post-buckling optimization of composite structures using Koiter's method

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)902-940
Number of pages39
JournalInternational Journal for Numerical Methods in Engineering
Issue number8
Early online date28 Mar 2016
DateAccepted/In press - 16 Feb 2016
DateE-pub ahead of print - 28 Mar 2016
DatePublished (current) - 23 Nov 2016


Thin-walled structures, when compressed, are prone to buckling. To fully utilize the capabilities of such structures, the post-buckling response should be considered and optimized in the design process. This work presents a novel method for gradient-based design optimization of the post-buckling performance of structures. The post-buckling analysis is based on Koiter's asymptotic method. To perform gradient-based optimization, the design sensitivities of the Koiter factors are derived, and new design optimization formulations based on the Koiter factors are presented. The proposed optimization formulations are demonstrated on a composite square plate and a curved panel where the post-buckling stability is optimized.

    Research areas

  • Asymptotic post-buckling, Composite optimization, Composite structures, Continuous fiber angle optimization, Koiter's method, Post-buckling optimization

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