Steel and Composite Structures

  • 제46권3호
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  • Pages.353-366
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  • 2023
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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Finite-element analysis and design of aluminum alloy RHSs and SHSs with through-openings in bending

  • Ran Feng (School of Civil and Environmental Engineering, Harbin Institute of Technology) ;
  • Tao Yang (School of Civil and Environmental Engineering, Harbin Institute of Technology) ;
  • Zhenming Chen (School of Civil and Environmental Engineering, Harbin Institute of Technology) ;
  • Krishanu Roy (School of Engineering, The University of Waikato) ;
  • Boshan Chen (Department of Civil Engineering, Tsinghua University) ;
  • James B.P. Lim (School of Engineering, The University of Waikato)
  • 투고 : 2021.08.08
  • 심사 : 2023.01.25
  • 발행 : 2023.02.10
⟨ 이전 논문 다음 논문 ⟩

초록

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 through-openings.

키워드

과제정보

The authors are grateful for the financial support from National Natural Science Foundation of China (Grant No. 52178131), Shenzhen Science and Technology Program (Grant No. GXWD20201230155427003-20200804174353001).

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