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Investigation on the low-velocity impact behaviour of non-symmetric FMLs—experimental and numerical methods
International Journal of Crashworthiness ( IF 1.9 ) Pub Date : 2020-06-18 , DOI: 10.1080/13588265.2020.1777619
Xiangjian Meng 1, 2 , Lu Yao 1, 2 , Changzi Wang 1, 2 , Wentao He 1, 2 , Lingjun Xie 1, 2 , Hao Zhang 1, 2
Affiliation  

Abstract

This article aims to investigate the low-velocity impact behaviour of non-symmetric FMLs bonded with aluminium sheets and carbon fibre composite laminates by experimental and numerical methods. Two types of non-symmetric FMLs (bilayered and trilaminar FMLs) are fabricated to study the effect of structure configuration on impact behaviour over a range of impact energies, both sides of each non-symmetric FML are impacted to explore failure modes and damage mechanisms. A progressive damage model based on the Hashin and Yeh delamination failure criterion is developed to predict the damage initiation and evolution of composite laminates. Numerical predictions are nearly consistent with experimental results, in terms of impact load, energy absorption and failure mechanisms. This study shows that the damage behaviour is closely related to the impacted side. In addition, the delamination damage on the aluminium-composite interface is greatly affected by impact energy, aluminium sheet thickness and location of aluminium-composite interface.



中文翻译:

非对称 FML 低速撞击行为的研究——实验和数值方法

摘要

本文旨在通过实验和数值方法研究与铝板和碳纤维复合材料层压板粘合的非对称 FML 的低速冲击行为。制造了两种类型的非对称 FML(双层和三层 FML)来研究结构配置对一系列冲击能量的冲击行为的影响,每个非对称 FML 的两侧都受到冲击以探索失效模式和损伤机制。开发了基于 Hashin 和 Yeh 分层失效准则的渐进式损伤模型来预测复合材料层压板的损伤起始和演变。在冲击载荷、能量吸收和失效机制方面,数值预测与实验结果几乎一致。这项研究表明,损伤行为与受影响的一侧密切相关。此外,铝-复合界面的分层损伤受冲击能、铝板厚度和铝-复合界面位置的影响很大。

更新日期:2020-06-18
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