药型罩参数对带厚壳PBX装药冲击起爆能力的数值模拟

罗茸文; 刘俊新; 杨佳滨; 李鸿飞; 王灯奎

doi:10.7643/issn.1672-9242.2026.07.008

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装备环境工程 ›› 2026, Vol. 23 ›› Issue (7) : 70-79. DOI: 10.7643/issn.1672-9242.2026.07.008

武器装备

药型罩参数对带厚壳PBX装药冲击起爆能力的数值模拟

罗茸文, 刘俊新, 杨佳滨, 李鸿飞, 王灯奎

作者信息 +

Numerical Simulation of Liner Parameters on Shock Initiation Capability of Thick-cased PBX Charge

LUO Rongwen, LIU Junxin, YANG Jiabin, LI Hongfei, WANG Dengkui

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文章历史 +

摘要

目的针对厚壁导弹战斗部难以被传统反导手段有效拦截的问题,探究药型罩关键结构参数对聚能射流冲击起爆带厚壳PBX装药的影响规律,为反厚壁目标聚能战斗部的工程设计提供理论支撑。方法采用LS-DYNA有限元软件,基于ALE流固耦合算法,建立包含聚能装药爆轰、射流形成、侵彻厚壁钢靶及冲击起爆PBX装药全过程的数值模型,系统分析药型罩半锥角和壁厚2个核心参数对射流头部速度、直径及起爆刺激的影响规律。结果药型罩半锥角和壁厚均对射流侵彻后剩余性能及起爆能力产生显著影响,半锥角变化会导致射流剩余速度与直径呈现相反的变化趋势,进而使起爆刺激呈现先升后降的规律。壁厚增加虽会降低射流剩余速度,但能显著增大射流直径,且在特定壁厚区间内起爆刺激会出现明显提升。模拟得到的PBX炸药起爆阈值与已有文献试验结果吻合良好。结论合理选用药型罩半锥角与壁厚参数可显著提升聚能射流对带厚壳PBX装药的起爆能力,所建立的数值模型可靠,可为反厚壁目标聚能战斗部的结构优化提供理论依据。

Abstract

The work aims to explorethe influence of key structural parameters of the shaped charge liner on the shock initiation of thick-cased PBX charges by a shaped charge jet, so as to provide theoretical support for the engineering design of shaped charge warheads against thick-walled targetsand address the challenge that thick-walled missile warheads are difficult to effectively intercept by traditional anti-missile means.Using the LS-DYNA finite element software and based on the ALE fluid-structure interaction algorithm, a numerical model covering the entire process of shaped charge detonation, jet formation, penetration of a thick-walled steel target, and shock initiation of the PBX charge was established. A systematic analysis was conducted on the influence of two core parameters—the half-cone angle and wall thickness of the shaped charge liner—on the jet tip velocity, diameter, and initiation stimulus. Both the half-cone angle and wall thickness of the shaped charge liner significantly affected the residual performance after jet penetration and the initiation capability. Variations in the half-cone angle caused opposite trends in the residual velocity andjet diameter, resulting in a stimulus pattern that first increased and then decreased. Although increasing the wall thickness reduced the residual velocity of the jet, it significantly increased the jet diameter; moreover, a notable enhancement in initiation stimulus was observed within a specific wall thickness range. The simulated initiation threshold of the PBX explosive showed good agreement with existing experimental results reported in the literature.Rational selection of the half-cone angle and wall thickness parameters of the shaped charge liner can significantly enhance the initiation capability of the shaped charge jet against thick-cased PBX charges. The established numerical model is reliable and can provide a theoretical basis for the structural optimization of shaped charge warheads against thick-walled targets.

导出引用

罗茸文, 刘俊新, 杨佳滨, 李鸿飞, 王灯奎. 药型罩参数对带厚壳PBX装药冲击起爆能力的数值模拟[J]. 装备环境工程. 2026, 23(7): 70-79 https://doi.org/10.7643/issn.1672-9242.2026.07.008

LUO Rongwen, LIU Junxin, YANG Jiabin, LI Hongfei, WANG Dengkui. Numerical Simulation of Liner Parameters on Shock Initiation Capability of Thick-cased PBX Charge[J]. Equipment Environmental Engineering. 2026, 23(7): 70-79 https://doi.org/10.7643/issn.1672-9242.2026.07.008

中图分类号： TJ410.3

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