含能材料2025，Vol.33Issue(10)：1138-1154,17.DOI:10.11943/CJEM2025142
封闭房间内部圆柱形装药爆炸荷载数值模拟
Numerical Investigations on Blast Loads generated from Cylindrical Charges inside Confined Rooms
摘要
Abstract
To investigate the influence of cylindrical charge geometry on blast load distribution under internal explosion condi-tions,16 numerical models were developed using LS-DYNA following experimental validation.A comprehensive parametric study was conducted to systematically evaluate the effects of three key factors:charge length-to-diameter ratio(L/D=1-5),igni-tion location(head,center,tail),and charge orientation.The analysis compared overpressure contours,reflected overpressure-time histories,impulse-time histories,and peak values across different scenarios.The results indicate that the L/D ratio exhibits the most significant impact on blast load distribution.As L/D increases from 1 to 5,the reflected overpressure ratio decreases dramatically from 37.5%-1287.9%to 25.5%-356.7%,and the reflected impulse ratio reduces from 88.7%-235.3%to 76.5%-132.8%.The effect of ignition position is region-specific,with the maximum differences in reflected overpressure and impulse ratios reaching 2173.3%and 328.0%.Charge orientation influence diminishes with increasing L/D ratio and incidence angle.Specifically,when L/D ratio increase from 1 to 5,the maximum reflected overpressure ratio decreases from 1287.9%to 356.8%,and impulse ratio decreases from 235.3%to 132.7%.The distribution of internal blast loads is primarily governed by the L/D ratio,followed by charge orientation and ignition location.关键词
圆柱形装药/内部爆炸/荷载分布/长径比/装药朝向/起爆位置Key words
cylindrical charge/internal explosion/blast load distribution/length-diameter ratio/charge orientation/ignition loca-tion分类
武器工业引用本文复制引用
肖伟芳,邬明桃,赵宪忠..封闭房间内部圆柱形装药爆炸荷载数值模拟[J].含能材料,2025,33(10):1138-1154,17.基金项目
中央高校基本科研业务费专项(22120250132) Fundamental Research Funds for the Central Universities(No.22120250132) （22120250132）
