TU1无氧铜轴心受压圆管柱整体稳定的有限元分析

Finite Element Analysis on Overall Buckling of TU1 Oxygen Free Copper Tubular Columns under Axial Compression

目的研究TU1无氧铜轴心受压构件的整体稳定性能,以填补金属铜工程力学性能研究领域的空白.方法运用有限元软件ABAQUS建立有限元模型,准确模拟构件的材料非线性与几何初始缺陷,对7个TU1无氧铜圆管柱试件进行有限元分析,并与相应的试验结果进行对比.结果有限元计算得到的极限承载力与试验得到的极限承载力的比值的平均值为0.964,标准差为0.049.结论建立的有限元模型能够准确地分析TU1无氧铜轴心受压圆管柱的整体稳定性能,为进一步运用该有限元模型对各类截面的TU1无氧铜轴心受压构件的整体稳定性能进行参数化分析提供了参考.

This paper investigated the overall buckling behavior of TU1 oxygen free copper（OFC） axial compression members, to supplement the research in the engineering mechanical properties of metal copper. By using the general-purpose finite element software, ABAQUS, finite element models （FEMs） were developed. After considering the material nonlinearity and initial geometric imperfections of the specimens, finite element analyses （FEAs）were performed on seven TU10FC tubular columns under axial compression. FEA results were compared with experimental results. It was found that for ultimate bearing capacity, the average ratio of FEA results to corresponding test re- suits was 0. 964, and the standard deviation was 0. 049. Conclusion was that the FEM created in this paper can accurately analyze the overall buckling behavior of TU1 OFC tubular columns under axial compression. Meanwhile, it was verified that the proposed model provided the basis of validity and reliability for further finite element parametric analysis on the overall buckling behavior of TU1 OFC axial compression members with different cross sections.