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鋁合金彈丸超高速撞擊玄武巖纖維布損傷分析

Al-projectile hypervelocity impacting damage on basalt fiber weave

  • 摘要: 高強(qiáng)度、高模量纖維防護(hù)材料是航天器空間碎片超高速撞擊防護(hù)結(jié)構(gòu)材料的發(fā)展趨勢(shì)之一。開展彈丸超高速撞擊高強(qiáng)纖維材料時(shí)的損傷分析是空間碎片防護(hù)結(jié)構(gòu)研究開發(fā)設(shè)計(jì)的重要環(huán)節(jié)。玄武巖纖維是近年來受到人們關(guān)注的一種高強(qiáng)度、高模量纖維。文章對(duì)鋁合金彈丸超高速撞擊玄武巖纖維布的損傷特性進(jìn)行了分析研究,觀察到了彈丸前部的損傷形態(tài)。根據(jù)試驗(yàn)結(jié)果擬合得到了鋁合金彈丸后部產(chǎn)生初始破壞的臨界破碎速度方程。分析表明:在試驗(yàn)范圍內(nèi),鋁合金彈丸撞擊玄武巖纖維布的臨界破碎速度低于撞擊鋁合金板的,即玄武巖纖維布對(duì)鋁合金彈丸的破碎能力優(yōu)于鋁合金板。

     

    Abstract: Shields of high strength fiber materials are often developed to protect spacecraft against space debris impact. The damage analysis of a projectile’s hypervelocity impact on the target plate woven by high strength fiber materials is a key issue in the design of the space debris shielding. Basalt fiber is one of the high strength and high modulus materials that has attracted much attention in recent years. The damage caused by aluminum projectile impacting on basalt fiber weave at hypervelocity is studied. The damage zones on the front surface of the projectiles were observed. The threshold fragmentation velocity of the aluminum projectile can be calculated from hypervelocity impact data. It shows that the threshold fragmentation velocity of the aluminum projectiles impacting on the basalt fiber weave is lower than that on aluminum plates, and the ability of the basalt fiber weave to break the aluminum projectiles is better than that of aluminum plates.

     

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