基于相似性分析的爆炸箔起爆器飞片速度模型研究
基金项目:
国家自然基金面上项目（No. 622275100）
Research on the Exploding Foil Initiator (EFI) Flyer Velocity Model Based on Similarity Analysis
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摘要:为准确预测爆炸箔起爆器 （EFI）的飞片速度，解决现有模型缺乏对 EFI 设计参数的全面考虑，且难以预测相邻参数域中的连续变化，无法支撑裕量建模中的性能敏感度分析和不确定性传递分析问题，本研究基于量纲分析和相似性原理，并结合试验数据，提出了一种新型的飞片速度模型，该模型将飞片速度特征参量与 EFI 的设计参量（如炮筒直径、飞片厚度、爆炸箔厚度和宽度等）关联起来。同时，进行了改变爆炸箔参数、飞片参数、炮筒参数以及起爆装置参数等验证试验，结果表明模型预测的飞片速度曲线与试验结果高度一致。本研究提出的飞片速度模型不仅能够服务于裕量建模，还为 EFI 的设计和优化提供了重要的理论依据。
Abstract:In order to accurately predicate the flyer velocity of exploding foil initiators (EFI), and solve the problems that existing models often lack comprehensive consideration of EFI design parameters, making it difficult to predict continuous changes in adjacent parameter domains and unable to support performance sensitivity analysis and uncertainty propagation analysis in margin modeling, a novel flyer velocity model based on dimensional analysis and similarity principles, combined with test data was proposed in this paper, which correlates flyer velocity characteristic parameters with EFI design parameters (e.g., caliber diameter, flyer thickness, exploding foil thickness, and width). And verification tests were conducted, including changes in exploding foil parameters, flyer parameters, caliber parameters, and initiation device parameters. The results indicate that the predicted flyer velocity curves are in good agreement with the test results. The flyer velocity model proposed in this study not only serves margin modeling, but also provides a significant theoretical basis for the design and optimization of EFI.
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