建筑钢结构进展2025，Vol.27Issue(5)：68-76,9.DOI:10.13969/j.jzgjgjz.20231128001
7075-T6高强铝合金方管轴心受压承载能力研究
Study on Axial Compression Bearing Capacity of 7075-T6 High-Strength Aluminum Alloy Square Tube
摘要
Abstract
In order to investigate the axial compression bearing capacity of 7075-T6 aluminum alloy square tubes,nine specimens were fabricated and subjected to axial compression tests.The study obtained the ultimate bearing capacity,failure modes,and load-axial displacement curves of the specimens.Finite element models of the specimens were established for numerical analysis,and the effectiveness of finite element numerical analysis was validated by comparison with experimental data.Parametric analysis was conducted using finite element numerical analysis,proposing a overall stability coefficient-relative slenderness ratio curve suitable for 7075-T6 aluminum alloy square tubes.The paper discussed the influence of local buckling on bearing capacity as the relative slenderness ratio varied.The results indicate that 7075-T6 aluminum alloy square tubes exhibit certain ductility.The established finite element models accurately simulate the entire loading process and ultimate bearing capacity of the specimens.The proposed overall stability coefficient-relative slenderness ratio curve has better accuracy than the softening curve.For members with the same cross-section but different relative slenderness ratios,the influence of local initial geometric defect on the ultimate bearing capacity varies.关键词
7075-T6铝合金/有限元分析/整体失稳/整体稳定系数/相对长细比/局部初始几何缺陷Key words
7075-T6 aluminum alloy/finite element analysis/global instability/overall stability coefficient/relative slenderness ratio/local initial geometric defect分类
土木建筑引用本文复制引用
刘均利,黎海霖,安永昌,杜熙,吕涛,项光韬..7075-T6高强铝合金方管轴心受压承载能力研究[J].建筑钢结构进展,2025,27(5):68-76,9.基金项目
交通运输重点科技项目(QD2022-88) （QD2022-88）
