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Steel and Composite Structures Volume 46, Number 3, February10 2023 , pages 353-366 DOI: https://doi.org/10.12989/scs.2023.46.3.353 |
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Finite-element analysis and design of aluminum alloy RHSs and SHSs with through-openings in bending |
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Ran Feng, Tao Yang, Zhenming Chen, Krishanu Roy, Boshan Chen and James B.P. Lim
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| Abstract | ||
| This paper presents a finite-element analysis (FEA) of aluminum alloy rectangular hollow sections (RHSs) and square hollow sections (SHSs) with circular through-openings under three-point and four-point bending. First, a finite-element model (FEM) was developed and validated against the corresponding test results available in the literature. Next, using the validated FE models, a parametric study comprising 180 FE models was conducted. The cross-section width-to-thickness ratio (b/t) ranged from 2 to 5, the hole size ratio (d/h) ranged from 0.2 to 0.8 and the quantity of holes (n) ranged from 2 to 6, respectively. Third, results obtained from laboratory test and FEA were compared with current design strengths calculated in accordance with the North American Specifications (NAS), the modified direct strength method (DSM) and the modified Continuous strength method (CSM). The comparison shows that the modified CSM are conservative by 15% on average for aluminum alloy RHSs and SHSs with circular through-openings subject to bending. Finally, a new design equation is proposed based on the modified CSM after being validated with results obtained from laboratory test and FEA. The proposed design equation can provide accurate predictions of flexural capacities for aluminum alloy RHSs and SHSs with circular throughopenings. | ||
| Key Words | ||
| aluminum alloy; Finite-Element Analysis (FEA); Rectangular Hollow Section (RHS); Square Hollow Section (SHS); through-opening | ||
| Address | ||
| Ran Feng and Tao Yang:School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, China Zhenming Chen:1)School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, China 2)China Construction Science and Industry Corporation LTD, Shenzhen, China Krishanu Roy:School of Engineering, The University of Waikato, New Zealand Boshan Chen:Department of Civil Engineering, Tsinghua University, China James B.P. Lim: School of Engineering, The University of Waikato, New Zealand | ||