Deformation of Honeycomb with Finite Boundary Subjected to Uniaxial Compression

Metals

Dai-Heng Chen¹ 

[1] Department of Mechanical Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 1258585, Japan; E-Mail:

关键词: honeycomb;    hexagonal cell;    buckling;    finite element method;    work-hardening;    deformation mode;    uniaxial compression;   

DOI  :  10.3390/met3040343

来源: mdpi

【 摘 要 】

In this paper, the crushing behavior of hexagonal honeycomb structures with finite boundaries (finite width and height) subjected to in-plane uniaxial compressive loading is studied based on the nonlinear finite element analysis. It is found that stress-strain responses for the honeycombs with finite boundaries can be classified into two types: Type I and Type II. Such a characteristic is affected by the wall thickness, the work-hardening coefficient and the yield stress for the honeycombs. Furthermore, a transition from the symmetric to asymmetric deformation mode can be observed in Type I, and these deformed cells were localized in a horizontal layer. However, for the case of Type II response, the symmetric and asymmetric deformation modes can be observed simultaneously, and the region of the asymmetric mode was formed by the cell layer along the diagonal direction. As a result, the shear deformation behavior was developed along that direction. Moreover, the effect of work-hardening on the deformation behavior for the honeycombs with finite boundaries can be explained from that for infinite honeycombs.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland