| 苗常青*,徐铧东,杜明俊,祖振南.芳纶/环氧纤维复合材料超高速撞击特性研究[J].实验力学,2019,34(4):609~615 |
| 芳纶/环氧纤维复合材料超高速撞击特性研究 |
| On the hypervelocity impact characteristics of aramid/epoxy fiber composite |
| 投稿时间：2017-11-03 修订日期：2018-01-27 |
| DOI：10.7520/1001-4888-17-231 |
| 中文关键词: 复合材料 超高速撞击 损伤 吸能 |
| 英文关键词:composite materials ultra-high speed impact damage energy absorption |
| 基金项目:“载人航天预研项目”(040101)支持 |
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| 中文摘要: |
| 对芳纶/环氧复合材料的超高速撞击特性进行了实验研究，分析了芳纶/环氧复合材料撞击损伤区域的破坏形式和损伤特性，提出了以纱线断裂数目、穿孔体积等作为撞击吸能特性的表征参数，得到了芳纶/环氧纤维复合材料的超高速撞击防护性能和破坏规律，并讨论了撞击过程中的能量转换和传递过程。结果表明：随着厚度增加，芳纶/环氧复合材料超高速撞击防护性能也相应提高，但其防护效率却有所降低。当厚度较薄时，芳纶/环氧复合材料会被超高速弹丸直接贯穿；随着厚度增加，复合材料撞击损伤机理发生改变，复合材料发生层间开裂现象，并对弹丸产生分层破碎效应。 |
| 英文摘要: |
| The hypervelocity impact characteristics of aramid/epoxy composite were studied experimentally. The damage pattern and damage characteristics of aramid/epoxy composite impact damage zone were analyzed. The yarn breakage number and perforation volume were proposed as characterization parameters to describe the energy absorption characteristics of impact. The hypervelocity impact protection performance and failure pattern of aramid/epoxy fiber composite plate were obtained. The energy conversion and transfer process of impact process were also discussed. Results show that with the increase of aramid/epoxy composite plate thickness, the hypervelocity impact protection ability also increases. But the unit thickness protection efficiency decreases. When aramid/fiber composite plate is thinner, the impact directly penetrates composite by projectile; as the thickness increases, the impact damage mechanism of the composite material has been changed: the interlayer cracking occurs in the composite material. The projectile are broken between the layers of the composite materials. |
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