期刊
COMPOSITE STRUCTURES
卷 109, 期 -, 页码 68-74出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2013.10.025
关键词
Hollow-cylindrical-joint honeycomb; Young's modulus; Poisson's ratio; Stress intensity factor; Strength
资金
- Priority Academic Program Development of Jiangsu Higher Education Institutions [1107037001]
- National Natural Science Foundation of China (NSFC) [31300780]
- European Research Council
- European Union
In this paper, we constructed a new honeycomb by replacing the three-edge joint of the conventional regular hexagonal honeycomb with a hollow-cylindrical joint, and developed a corresponding theory to study its mechanical properties, i.e., Young's modulus, Poisson's ratio, fracture strength and stress intensity factor. Interestingly, with respect to the conventional regular hexagonal honeycomb, its Young's modulus and fracture strength are improved by 76% and 303%, respectively; whereas, for its stress intensity factor, two possibilities exist for the maximal improvements which are dependent of its relative density, and the two improvements are 366% for low-density case and 195% for high-density case, respectively. Moreover, a minimal Poisson's ratio exists. The present structure and theory could be used to design new honeycomb materials. (C) 2013 Elsevier Ltd. All rights reserved.
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