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管状结构在耗能结构中扮演了重要的角色。这种结构构件必须具有较高的强度重量比。目前圆管、方管和矩形管的屈曲理论研究较深入。然而三角形管的屈曲理论却没有受到足够的重视。基于将管壁近似成有适当边缘约束的独立薄壁,提出了等腰三角形管的弹性屈曲分析方法,并将分析结果与已有的分析成果和有限元模拟进行了对比。结果表明:本文结论与已有成果和有限元模拟结果吻合良好。
Tubular structures play an important role in energy dissipation structures. This structural member must have a high strength to weight ratio. At present, the buckling theory of circular tube, square tube and rectangular tube is deeply studied. However, the buckling theory of triangular tube has not been given enough attention. Based on the independent thin wall which approximates the pipe wall with proper edge constraint, the elastic buckling analysis method of isosceles triangular pipe is proposed. The analytical results are compared with the existing analytical results and finite element simulation. The results show that the conclusion in this paper is in good agreement with the existing results and the finite element simulation results.