多层介质阻抗匹配对隔爆效果的影响
Influence of multilayered media impedance matching on the explosion interruption effect
In order to improve the performance of the explosion interruption structure to attenuate explosion shock wave effectively, the explosion interruption structures of sequential impedance matching gradient, reverse impedance matching gradient and hard-soft-hard were designed through the different combinations of 45# steel, Aluminum and PMMA. The influence of multilayered media impedance matching property on the explosion interruption effect was studied by using manganin pressure resistance sensor experiment and numerical calculation. The pressure was obtained of every layer media’s shock that were caused by different combinations of multilayered media in the process of the shock wave transmission. The experimental results turned out to be consistent with the theoretical analysis and numerical calculation, and the change rules of energy and impulse in the third layer were analyzed as well. The results from different aspects show that the reverse impedance matching gradient structure has optimal explosion interruption effect. The minimal output shock pressure is contained in the reverse impedance matching gradient structure, among which the third layer conveys the minimal energy and impulse.
隔爆 / 多层介质 / 阻抗匹配 / 冲击波 {{custom_keyword}} /
explosion interruption / multilayered media / impedance matching / shock wave {{custom_keyword}} /
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