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        The Flexural Capacity of 7A04-T6 Aluminum Alloy Rectangular Hollow Section Beams

        Li Zhenyu,Zhou Yangfeng,Rong Bin 한국강구조학회 2022 International Journal of Steel Structures Vol.22 No.1

        This paper presents a particular experimental research on rectangular hollow section (RHS) and square hollow section (SHS) beams made of 7A04-T6 aluminum alloys. A total of 18 in-plane bending specimens four-point confi gurations have been investigated. The infl uence of length, cross-section slenderness was investigated. Full load–rotation and load–displacement histories were derived, containing into the post-ultimate stage. Material parameters of each member was acquired from tensile experiments. The experimental results were duplicated by means of non-linear numerical modelling. Based on careful validation of the models, a total of 96 parametric studies were performed to assess the structural response of RHS/SHS over a wider range of cross-section slenderness. Following analysis of the data, the correctness of the fl exural capacity provisions in the present design specifi cations EN 1999-1-1 (Europe) and GB 50429 (China) was assessed. The results showed that the design rules provided conservative predictions of the ultimate fl exural capacities. In this study, modifi ed design rules based on Eurocode 9 (Europe) are proposed, which are shown to improve the accuracy of these design rules in a reliable manner.

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