侵彻弹引系统非线性动力学模型及响应特性  

Nonlinear Dynamic Model and Response Characteristics of Penetration Projectile-fuze System

作　　者：郑卓扬 董恒 武海军[1] 贾桐庆 杨冠侠 黄风雷[1] ZHENG Zhuoyang;DONG Heng;WU Haijun;JIA Tongqing;YANG Guanxia;HUANG Fenglei(National Key Laboratory of Explosive Science and Safety Protection,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学爆炸科学与安全防护全国重点实验室,北京100081

出　　处：《兵工学报》2025年第4期241-254,共14页Acta Armamentarii

基　　金：国家自然科学基金项目(12072039、12202067)。

摘　　要：为准确揭示和描述弹体-引信系统(简称弹引系统)在侵彻典型目标过程中引信内部核心器件的过载环境及动态响应,基于空腔膨胀理论获得侵彻过程的弹靶相互作用,分析应力波在战斗部壳体内的传播效应,引入弹引螺纹连接的载荷传递特性及缓冲材料的非线性响应模式,构建高速侵彻下弹引系统的非线性动力学响应模型,通过理论及实验方法确定模型参数,结合有限元数值仿真研究分析弹引系统的动态响应特性及弹靶参数对过载信号的影响机理和规律。研究结果表明:所建立的非线性动力学响应模型在时-频域特征上与数值仿真结果吻合良好,可更准确地描述高速侵彻下弹引系统的过载传递特性及引信内部器件的真实动力学响应,其响应模式主要为刚性过载和高频结构振动的耦合叠加,螺纹连接会进一步放大过载信号,聚氨酯材料在侵彻冲击环境下体现出一定的吸能滤波作用;弹引系统侵彻多层间隔目标相较于单一半无限目标时的过载信号更为复杂剧烈,弹靶参数决定了弹靶相互作用的频率特性,当侵彻多层间隔目标的弹靶作用频率的整数倍与弹引系统固有频率更接近时,加速度过载会出现峰值显著增大、振荡加剧及信号严重粘连等现象;研究成果为快速有效预测不同弹目特性下引信内部关键模块的真实响应和过载特性、评估其安全性及可靠性提供了技术参考。In order to accurately reveal and describe the overload environment and dynamic response of the core components inside the fuze of projectile-fuze system in the process of penetrating into typical targets,the interaction between projectile and target during penetrating are obtained based on the cavity expansion theory,and the propagation effects of stress waves inside the warhead are analyzed.The load transfer characteristics of threaded connection between warhead and fuze and the nonlinear response mode of a cushioning material are introduced.A nonlinear dynamic response model of projectile-fuze system under high-speed penetration is constructed,and the model parameters are determined by using the theoretical and experimental methods.The dynamic response characteristics of projectile-fuze system and the influence mechanisms and regularity of projectile and target parameters on overload signals are researched through finite element numerical simulation.The results indicate that the time-frequency domain characteristics of the proposed nonlinear dynamic response model consistent with the numerically simulated results well,which can more accurately describe the overload transfer characteristics of projectile-fuze system and the real dynamic responses of internal components under high speed penetration.The response mode is mainly the coupling superposition of rigid overload and high frequency structural vibration,the threaded connection amplifies the overload signal,and the polyurethane material exhibits a certain energy absorption and filtering effect in the penetration and impact environment.The overload signals of the projectile-fuze system penetrating a multi-layered target are more complex and intense those when penetrating a single semi-infinite target.The frequency characteristics of interaction between projectile and target are determined by projectile and target parameters.When the frequency of interaction between warhead and target in penetrating multiple layers of spaced targets is closer to the integer m

关 键 词：弹引系统 波动 振动 非线性动力学模型 时频域特性 

分 类 号：O385[理学—流体力学] TJ43[理学—力学]