论文部分内容阅读
采用试验研究和有限元数值分析方法,对6061-T6系列的铝合金方管开孔柱的轴心受压性能进行研究,建立了同时考虑材料非线性和几何非线性的有限元数值模型,对短柱和中长柱的屈曲模式进行模拟,并通过数值模拟结果提出了开孔柱极限承载力的计算方法。利用该有限元模型针对孔洞的存在、大小、数目、位置对铝合金开孔柱的承载力和屈曲模式的影响进行了全面的分析,并通过对比铝合金未开孔轴心受压构件的计算方法与冷弯薄壁型钢开孔轴心受压构件的计算方法,结合数值模拟结果,提出了铝合金开孔轴心受压构件的计算公式。
The axial compression behavior of 6061-T6 series aluminum alloy square tube perforated columns was studied by means of experimental research and finite element numerical analysis. The finite element numerical model considering both material nonlinearity and geometric nonlinearity was established. The short column and the long column were simulated. Based on the numerical simulation results, the calculation method of the ultimate bearing capacity of perforated column was proposed. The finite element model is used to analyze the influence of the existence, size, number and position of holes on the bearing capacity and buckling mode of aluminum alloy perforated columns. Comparing the calculation of the uniaxial axis compression members Method and the calculation method of the axial compression members of the cold-formed thin-walled section steel are presented. The calculation formula of the axial compression member with the aluminum alloy opening is proposed based on the numerical simulation results.