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圆管、方管等管状结构受轴向的压缩作用,是工程上常见的一种结构受力形式.由于几何尺寸、边界条件和材料特性的不同,管状结构可以发生5种不同的失效模式:渐进屈曲、整体失稳、翻转、膨胀和劈裂.本文综述了近年来管状结构在轴压作用下不同失效模式的理论建模、实验测试和数值仿真研究结果,并对5种失效模式的力学响应、能量吸收特性进行了对比与分析.
Tubular structures such as circular tubes and square tubes are subject to axial compression and are a common form of structural stress in engineering. Five different failure modes can occur in tubular structures due to their geometrical dimensions, boundary conditions and material properties: Progressive buckling, overall instability, overturning, swelling and splitting.In this paper, the theoretical modeling, experimental tests and numerical simulation results of different failure modes of tubular structures subjected to axial compression were reviewed in this paper. Five kinds of failure mechanics Response, energy absorption characteristics were compared and analyzed.