Investigation of Residual Velocity of Aluminum Projectiles at Hypervelocity Impact on Woven of Basalt Fiber
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摘要: 采用高强纤维作为防护材料，是航天器空间碎片超高速撞击防护结构发展的趋势之一。超高速撞击损伤分析是空间碎片防护结构研究开发设计的重要环节，也是高压极端加载条件下材料动态响应分析的重要内容。玄武岩纤维是近年来受到人们关注的一种高强度、高模量陶瓷纤维。利用二级轻气炮进行了铝合金弹丸超高速撞击玄武岩纤维编织布时的超高速撞击实验，根据弹丸碎片的闪光X射线阴影照片，分析了铝合金弹丸超高速撞击玄武岩纤维编织布的撞击速度损失规律，根据实验结果拟合得到了铝合金弹丸的剩余速度方程，为分析玄武岩纤维材料对弹丸的撞击能量消耗提供了参考依据。Abstract: In order to protect spacecraft against space debris impacts, it is a feasible direction to develop the shield with high strength fiber materials. The damage analysis of hypervelocity impact on high strength fiber woven is a key issue in the design of the space debris shielding, and the main content in the analysis of the dynamic behavior of materials in the hyper pressure condition. Woven of basalt fiber is one of the high strength ceramic materials concerned in recent years. The aim of this study was to study the residual velocity of aluminum projectiles at hypervelocity impact on woven of basalt-fibers. High velocity impact tests were carried out by the two-stage light gas gun facilities. The law of the velocity loss was researched according to the X-rays imaging of the projectile fragments. The residual velocity equations of aluminum projectiles were fitted from the hypervelocity impact experimental data The study of the residual velocity equations is beneficial to the analysis of impact energy consumption of woven of basalt-fibers to aluminum projectiles.
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Key words:
- hypervelocity impact /
- woven of basalt fiber /
- residual velocity equation
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