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星上压力容器中储存有高压气体或液体,在受到空间碎片和微流星体超高速撞击时可能发生灾难性事故。文章采用均匀实验设计方法对星上常用高压气瓶的超高速撞击仿真方案进行了试验设计,并通过LS-DYNA仿真软件对其进行了超高速撞击数值仿真,获取了不同参数的弹丸撞击气瓶时气瓶器壁穿孔孔径。通过对器壁穿孔孔径的数据拟合,建立了无防护情况下气瓶器壁的穿孔孔径预测公式。与试验结果对比表明,建立的穿孔孔径预测公式具有一定的预测精度。
High-pressure gases or liquids are stored in the pressure vessels on the satellite, and catastrophic accidents can occur when they are struck by the super-high-speed impact of space debris and micro-meteorites. In this paper, a uniform experimental design method was used to design the hypervelocity impact simulation scheme of star high-pressure gas cylinders. The numerical simulation of hypervelocity impact was carried out by LS-DYNA simulation software, When the cylinder wall perforation aperture. By fitting the data of the perforation aperture of the wall, a prediction formula of the perforation aperture of the cylinder wall of the air cylinder without the protection is established. The comparison with the experimental results shows that the prediction formula of the perforated aperture has a certain prediction accuracy.