期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 70, 期 6, 页码 930-936出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2010.02.007
关键词
Sandwich; Mechanical properties; Elastic properties; Gradient honeycomb
资金
- UK Technology Strategy Board [16293]
- Department for Innovation, Universities and Skills (DIUS)
This paper describes the transverse shear stiffness of a novel topology of gradient honeycomb structures. Opposite to classical honeycomb configurations, gradient honeycombs feature elements of their unit cells with a regular geometry variation across the whole honeycomb panel. The tessellation of the cells is not periodic, but is dictated by geometric constraints between adjacent units. Gradient honeycombs with wall thickness linearly increasing along the panel are described using experimental data and Finite Element models. The gradient behaviour of the cellular structure provides additional complexity, and the possibility of tailoring design properties, such as the stiffness per unit of weight. We observe a good agreement between the Finite Element and the experimental results, with maximum percentage errors <7% for the shear moduli of the honeycombs. (C) 2010 Elsevier Ltd. All rights reserved.
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