工程科学学报2016，Vol.38Issue(8)：1153-1159,7.DOI:10.13374/j.issn2095-9389.2016.08.015
聚氨酯/蜂窝铝复合材料的压缩力学行为及缓冲吸能特性
Compression behavior and energy-absorption characteristic of aluminum honeycomb material with polyurethane filler
摘要
Abstract
Static compression experiments were conducted on hollow aluminum honeycomb (hexagon aperture), polyurethane, and aluminum honeycomb filled with polyurethane. The mechanical behavior and energy absorption characteristics of the composite were analyzed. Experimental results show that the stress- strain curve of the composite exhibits three stages: elasticity, yield and compaction. The initial stiffness and yield stress greatly increase compared to the hollow aluminum honeycomb. Because of the addition of the aluminum honeycomb, the deformation recovery of the polyurethane decreases by 25%. The maximum energy absorption efficiency of the composite is 1. 47 times that of the pure polyurethane, and the composite materials show a better energy absorption efficiency than the pure polyurethane under a larger stress. The maximum energy absorption efficiency of the 1 mm aperture aluminum honeycomb with polyurethane filler is 1. 37 times that of the 2 mm aperture aluminum honeycomb with polyurethane filler. The larger the loading rate, the greater the peak value of the energy absorption efficiency and the stress at the time of reaching the maximum ener-gy absorption efficiency are.关键词
复合材料/蜂窝铝/聚氨酯/压缩试验/吸能Key words
composite materials/aluminum honeycomb/polyurethane/compression testing/energy absorption分类
通用工业技术引用本文复制引用
宋玉环,肖久梅..聚氨酯/蜂窝铝复合材料的压缩力学行为及缓冲吸能特性[J].工程科学学报,2016,38(8):1153-1159,7.基金项目
北京科技大学冶金工程研究院基础理论研究基金资助项目(32001049) （32001049）
