Dynamic and quasi-static bending behaviour of thin-walled aluminium tubes filled with aluminium foam
Dynamic and quasi-static bending behaviour of thin-walled aluminium tubes filled with aluminium foam
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DOI：
10.1016/j.compstruct.2013.10.040
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发表时间：
2014-03-01
影响因子：
6.3
通讯作者：
Krstulovic-Opara, Lovre
中科院分区：
文献类型：
--
作者：
Duarte, Isabel;Vesenjak, Matej;Krstulovic-Opara, Lovre
本文旨在评估闭孔铝合金整皮泡沫作为铝合金薄壁结构的加强元件的潜在用途，铝合金薄壁结构是汽车车身部件的概念和设计中的主要基础部件。采用粉末冶金法制备泡沫试样，将其插入空薄壁管中，并进行准静态和动态弯曲加载。在三点弯曲试验过程中，使用红外热成像技术评估了在管中引入泡沫的效果。从最大承载能力、碰撞吸能、比吸能和变形模式等方面对泡沫填充管、空管和泡沫进行了比较。结果表明，由于管壁和泡沫填充物之间的相互作用，泡沫填充导致填充管的弯曲响应增加，超过了单个组件的弯曲响应之和。它们的变形模式是各个组件的模式之间的组合。(C)2013爱思唯尔有限公司版权所有。
This paper aims to evaluate the potential use of closed-cell aluminium alloy integral-skin foams as stiffening elements for aluminium alloy thin-walled structures that are main basic components in the concept and design of automotive body parts. Foam specimens were prepared using the powder metallurgical route, inserted into empty thin-walled tubes and subjected to quasi-static and dynamic bending loading conditions. The effect of introducing foam into tubes was evaluated using the infrared thermography during the three-point bending tests. The foam-filled tubes, empty tubes and foams are compared in terms of the maximum load carrying capacity, crash energy absorption, specific energy absorption and deformation modes. Results showed that the foam filling leads due to interaction between the tube wall and foam filler, causing an increased bending response of the filled tubes which exceeds the sum of the bending response for the individual components. Their deformation mode is a combination between the modes of the individual components. (C) 2013 Elsevier Ltd. All rights reserved.