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论文类型：期刊论文

发表时间：2014-08-01

发表刊物：JOURNAL OF REINFORCED PLASTICS AND COMPOSITES

收录刊物：SCIE、EI

卷号：33

期号：16

页面范围：1508-1519

ISSN号：0731-6844

关键字：Advanced grid stiffened; composite; finite element model; equivalent stiffness model; buckling

摘要：Advanced grid stiffened composite cylindrical shell is widely adopted in advanced structures due to its exceptional mechanical properties. Buckling is a main failure mode of advanced grid stiffened structures in engineering, which calls for increasing attention. In this paper, the buckling response of advanced grid stiffened structure is investigated by three different means including equivalent stiffness model, finite element model and a hybrid model (H-model) that combines equivalent stiffness model with finite element model. Buckling experiment is carried out on an advanced grid stiffened structure to validate the efficiency of different modeling methods. Based on the comparison, the characteristics of different methods are independently evaluated. It is arguable that, by considering the defects of material, finite element model is a suitable numerical tool for the buckling analysis of advanced grid stiffened structures.