On the estimation of near-field air blast peak overpressure from cylindrical charges

IF 2.1 Q2 ENGINEERING, CIVIL
J. Liu, C. Gao, Z. Sun, JW Yin
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引用次数: 0

Abstract

In the near field, the air blast peak overpressure from cylindrical charges may vary by several times with angles at the same scaled distance. We propose an estimation equation for the peak overpressure from cylindrical charges, which can predict the peak overpressure from cylindrical charges at any positions in the near field. The estimation equation is in the form of piecewise function which contains three variables of length-to-diameter ratio, angle and scaled distance, and the applicability of our estimation equation is verified by experiment and simulation. After preliminary verification, the application range of length-to-diameter ratio of cylindrical charge is [Formula: see text] and that of scaled distance is [Formula: see text]. The estimation equation can be rapidly applied to the assessment of near-field target damage and protection against air blast from cylindrical charges, which is a significant supplement to the traditional empirical equations for spherical charge.
圆柱装药近场空气爆炸峰值超压的估算
在近场中,在相同标度距离下,圆柱形装药的空气冲击峰值超压可能随角度变化数倍。我们提出了一个圆柱形装药峰值超压的估计方程,该方程可以预测近场中任何位置的圆柱形装药的峰值超压。该估计方程为分段函数形式,包含长径比、角度和缩放距离三个变量,通过实验和仿真验证了该估计方程的适用性。经初步验证,圆柱形装药长径比的适用范围为[公式:见正文],定标距离的适用范围是[公式:详见正文]。该估计方程可快速应用于近场目标损伤评估和圆柱装药对空气冲击的防护,是对传统球形装药经验方程的重要补充。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.30
自引率
25.00%
发文量
48
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