Investigations on sandwich core properties through an experimental-numerical approach
Investigations on sandwich core properties through an experimental-numerical approach
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DOI：
10.1016/j.compositesb.2011.08.016
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发表时间：
2012-03-01
影响因子：
13.1
通讯作者：
Gilioli, A.
中科院分区：
文献类型：
--
作者：
Giglio, M.;Manes, A.;Gilioli, A.
夹层结构越来越多地用于航空航天领域，也用于主要部件。然而，由于广泛的制造工艺，对其精确机械性能的评估并不简单。目前，这一评价是今后开发这些结构的一项关键任务。数值模拟是详细研究和识别此类部件力学行为的强大而灵活的工具。因此，在目前的工作中，一个广泛的和高度准确的识别/验证策略的基础上，实验测试已经开发。有限元模拟（虚拟试验）已经进行，以详细调查，几个制造商的参数对含有Nomex（TM）蜂窝芯的夹层板的破碎力学的影响。还对数值尺度模型进行了评估，目的是增加对破碎现象的理解，特别是细胞的相互作用。(C)2011爱思唯尔有限公司保留所有权利。
Sandwich structures are increasingly used in the aerospace field, also for primary parts. However, due to the extensive manufacturing process, the evaluation of their precise mechanical behaviour is not straightforward. This evaluation is, at present, a key task to enable future exploitation of these structures. Numerical simulations are powerful and flexible tools to study and identify the mechanical behaviour of such components in detail. Thus, in the present work, an extensive and highly accurate identification/validation strategy based on experimental tests has been developed. Finite element simulations (virtual tests) have been carried out in order to investigate, in detail, the effect that several manufacturer's parameters have on the crushing mechanics of sandwich panels containing a Nomex (TM) honeycomb core. Numerical scale modelling has also been evaluated with the aim to increase the understanding of the crushing phenomena, particularly the reciprocal effect of the cells. (C) 2011 Elsevier Ltd. All rights reserved.