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压头鼻尖形状和层配置对金属-塑料层压板准静态穿孔行为的影响。

Effect of Indenter Nose Shape and Layer Configuration on the Quasi-Static Perforation Behaviour of Metal-Plastic Laminates.

作者信息

Uddin Mohammad, Stevens Graham, Williams Daniel

机构信息

UniSA STEM, University of South Australia, Mawson Lakes Campus, Mawson Lakes, SA 5095, Australia.

St Vens Pty Ltd., Toowoomba, QLD 4350, Australia.

出版信息

Materials (Basel). 2022 Aug 25;15(17):5879. doi: 10.3390/ma15175879.

DOI:10.3390/ma15175879
PMID:36079260
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9457148/
Abstract

This study investigated the perforation resistance behaviour of metal-plastic laminates (MPLs) when they are indented by different nose shapes. Aluminium (Al) and HDPE (high-density polyethylene) layers were bonded with a suitable adhesive in an alternative manner to prepare bilayer and trilayer MPL configurations. Quasi-static perforation experiments were performed with hemispherical, conical and blunt indenters. The effects of nose shape, layer configuration and adhesive on the force-deformation profile, perforation resistance capacity and failure mechanisms were evaluated. The results indicate that for a monolithic layer, the blunt indenter showed the highest perforation energy capacity. The conical and blunt indenters facing Al backed by HDPE gave higher perforation energy. The hemispherical indenter facing HDPE backed by Al was found to be more effective in perforation resistance. Trilayer Al-HDPE-Al showed higher perforation resistance than HDPE-Al-HDPE. Circumferential cracking, radial symmetric cracking and shear plugging were the main failure modes for Al under hemispherical, conical and blunt indenters, respectively. The adhesive contributed to an increase in the perforation energy and peak force to failure in laminates. The adhesive was shown to detach from the Al surface after Al fracturing through crack propagation, and this effect was more pronounced when the indenter faced HDPE at the front of the laminate.

摘要

本研究调查了金属-塑料层压板（MPL）在被不同形状的压头压入时的抗穿孔性能。铝（Al）层和高密度聚乙烯（HDPE）层以交替方式用合适的粘合剂粘结，以制备双层和三层MPL结构。使用半球形、锥形和钝头压头进行准静态穿孔实验。评估了压头形状、层结构和粘合剂对力-变形曲线、抗穿孔能力和失效机制的影响。结果表明，对于整体层，钝头压头显示出最高的穿孔能量容量。HDPE作为支撑、面向Al的锥形和钝头压头具有更高的穿孔能量。发现Al作为支撑、面向HDPE的半球形压头在抗穿孔方面更有效。三层Al-HDPE-Al比HDPE-Al-HDPE表现出更高的抗穿孔性。在半球形、锥形和钝头压头作用下，Al的主要失效模式分别为周向开裂、径向对称开裂和剪切冲塞。粘合剂有助于提高层压板的穿孔能量和破坏时的峰值力。在Al通过裂纹扩展断裂后，粘合剂显示从Al表面分离，当压头面向层压板前端的HDPE时，这种效应更为明显。

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