Discrete Material Buckling Optimization of Laminated Composite Structures considering "Worst" Shape Imperfections

Søren Randrup Henrichsen, Esben Lindgaard, Erik Lund

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

Robust design of laminated composite structures is considered in this work. Because laminated composite structures are often thin walled, buckling failure can occur prior to material failure, making it desirable to maximize the buckling load. However, as a structure always contains imperfections these must be included into the optimization, otherwise the imperfection sensitivity of the structure can be increased through optimization. To minimize the imperfection sensitivity of the structure the so-called Recurrence Optimization is applied. This approach uses a sequence of laminate optimizations and “worst” shape imperfection optimizations to design robust composite structures. The approach is demonstrated on an U-profile where the imperfection sensitivity is monitored, and based on the example it can be concluded that robust designs can be obtained.
Original languageEnglish
Title of host publicationProc. of 3rd International Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures with DESICOS Workshop
EditorsR. Degenhardt
Number of pages4
Publication date2015
Publication statusPublished - 2015
Event3rd International Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures with DESICOS Workshop - Braunschweig, Germany
Duration: 25 Mar 201525 Mar 2015

Conference

Conference3rd International Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures with DESICOS Workshop
Country/TerritoryGermany
CityBraunschweig
Period25/03/201525/03/2015

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