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Damages and matter ejection during HVI on brittle structures: implications for space environment

机译:在HVI期间对脆性结构造成的破坏和物质排出:对空间环境的影响

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摘要

The population of space debris is suspected to grow onudearth’s orbits. This might be due to self generationudprocesses occurring when an object impacts a satellite’s surface. As brittle materials, widely used for large solar arrays, are particularly sensitive to HVI in terms of damage and matter ejection, they might play an important role in debris generation. This paper focuses on HVI on thin brittle targets like Hubble silicon solar cells. Simulated and in-situ Front back impacts on both HST-CS and simple SiO2 targets were analyzed. Ejected volume and fragments were collected and filmed to characterize potential secondary debris. A mechanical analysis of damages due to the multilayered structure of solar cells as well as Ls-Dyna SPH calculations have also been performed and are compared to experimental results to assess predictions capabilities of the SPH code.
机译:据推测,太空碎片的数量会在地球的轨道上增长。这可能是由于当物体撞击卫星表面时会发生自我生成 udprocess。由于广泛用于大型太阳能电池阵列的脆性材料对HVI的损害和物质喷射特别敏感,因此它们可能在碎屑产生中发挥重要作用。本文将重点放在像哈勃硅太阳能电池这样的薄脆性靶材上的HVI。分析了对HST-CS和简单SiO2目标的模拟和原位反冲影响。收集喷射的体积和碎片并进行拍摄以表征潜在的次生碎片。还对由于太阳能电池的多层结构而造成的损坏进行了机械分析,并进行了Ls-Dyna SPH计算,并将其与实验结果进行比较,以评估SPH代码的预测能力。

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