Analysis of the influence factors of rod-shaped fragment on high altitude balloon membrane damage
With the development of modern science and technology,the extensive application of high-altitude balloons in the civilian and military fields has also caused a lot of hidden dangers.This study mainly studies the damage law and damage form of high altitude balloon under the impact of rod type fragment through numerical simulation,and analyzes the damage performance of rod type balloon film at different length ratio and speed by numerical simulation.The results show that:(1)the balloon membrane can withstand the impact of kill element 50 m/s,when the speed is less than 50 m/s,only by the end;the speed of 50 m/s,the balloon membrane can be penetrated,and the higher the speed of the damage area.(2)The increase of the rod-shaped fragment aspect ratio will cause the overall damage area of the balloon membrane,but it has little impact on the displacement of the velocity direction of the balloon membrane.This research can provide certain theoretical basis and technical support for the civil and military fields to combat the illegal release of high-altitude balloons.
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