Axial Crushing Characteristics of Circular Tubes with Radial Corrugation

Journal of Computational Science and Technology

Kazuyuki HATTORI¹  Shingo OZAKI²  Dai-Heng CHEN¹ 

[1] Tokyo University of Science, Department of Mechanical Engineering;Yokohama National University, Division of Systems Research

关键词: Plasticity;    Finite Element Method;    Square Tube;    Corrugated Surface;    Axial Collapse;    Load Efficiency;   

DOI  :  10.1299/jcst.3.437

学科分类：地球科学(综合)

来源: Japan Academy

【 摘 要 】

References(10)In this paper, the effect of radial corrugation on the crushing behaviors of circular tubes is studied by using the finite element method. The numerical analysis is carried out on two geometrically different types of corrugations, ”radial corrugated tube” (RCT) and ”radial corrugated tube with corners” (RCTC). To compare crushing behaviors of those of corrugated circular tubes, a non-corrugated circular tube (CT) is also analyzed. It is revealed that, in the crushing process, the crushing mode of RCT becomes more unstable than that of CT since the wavelength of the fold becomes long and the fold concentrates to the center of the wavelength. However, when the length and the diameter of the tubes are set to the same levels, RCT demonstrates good energy absorption characteristics. Further, it is shown that the compressive load and load efficiency of RCTC increases due to the corner part.

【 授权许可】

Unknown