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首页> 外文期刊>Key Engineering Materials >Investigation into Damage of Aluminum Gas-Filled Pressure Vessels under Hypervelocity Impact
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Investigation into Damage of Aluminum Gas-Filled Pressure Vessels under Hypervelocity Impact

机译：超高速冲击下充铝压力容器的损伤研究

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摘要

Impacts of meteoroids and space debris on pressure vessels can have detrimental consequences for any mission. Depending on the parameters of the impacting particle and the characteristic of the vessel, the damages can range from relatively uncritical craters in the vessel's surface to the catastrophic bursting of vessels, which besides the loss of vessel may result in severe secondary damages to surrounding components. In order to investigate failure mechanisms of thin-walled aluminum pressure vessels under hypervelocity impact of space debris, a non-powder two-stage light gas gun was used to launch Al-sphere projectiles impacting on unshielded and shielded vessels. Damage patterns and mechanisms leading to catastrophic rupture are discussed. Experimental results indicate that the impact kinetic energy of the projectile and the gas pressure in the vessel have an important effect on the damage modes of the vessel. On the one hand, high pressure gas can lead to a vessel blast. On the other hand, high pressure gas can mitigate the impact of the debris cloud on the rear wall of the vessel. Catastrophic rupture of unshielded gas-filled vessels can be avoided when the impact energy is less than a certain limit value. When the bumper is perforated, damage of shielded pressure vessel might be fatal for vessels with high gas pressure.
机译：流星体和空间碎片对压力容器的影响可能会对任何任务产生不利影响。取决于撞击颗粒的参数和容器的特性，损害的范围可能从容器表面相对不重要的陨石坑到容器的灾难性爆裂，除了容器的损失外，还可能导致对周围组件的严重二次损坏。为了研究薄壁铝制压力容器在空间碎片超高速冲击下的失效机理，采用无粉两级轻气枪发射铝球弹，撞击在非屏蔽和屏蔽容器上。讨论了导致灾难性破裂的破坏模式和机制。实验结果表明，弹丸的冲击动能和舰船内的气压对舰船的损伤方式有重要影响。一方面，高压气体会导致容器爆炸。另一方面，高压气体可以减轻碎片云对容器后壁的影响。当冲击能量小于某个极限值时，可以避免未加保护气的容器发生灾难性破裂。当保险杠打孔时，对于高压气体的容器，带屏蔽的压力容器可能会致命。

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