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Metals 2013, 3(4), 343-360; doi:10.3390/met3040343
Article

Deformation of Honeycomb with Finite Boundary Subjected to Uniaxial Compression

1
 and 2,*
1 Department of Mechanical Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 1258585, Japan 2 Department of Mechanical Engineering, Kyushu Sangyo University, 2-3-1 Matsukadai, Higashi-ku, Fukuoka 8138503, Japan
* Author to whom correspondence should be addressed.
Received: 9 October 2013 / Revised: 12 November 2013 / Accepted: 19 November 2013 / Published: 25 November 2013
(This article belongs to the Special Issue Metal Foams 2013)

Abstract

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.
Keywords: honeycomb; hexagonal cell; buckling; finite element method; work-hardening; deformation mode; uniaxial compression honeycomb; hexagonal cell; buckling; finite element method; work-hardening; deformation mode; uniaxial compression
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Chen, D.-H.; Ushijima, K. Deformation of Honeycomb with Finite Boundary Subjected to Uniaxial Compression. Metals 2013, 3, 343-360.

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