冲击波在不同物态介质界面传播的理论分析  

Theoretical analysis of shock wave propagation at different medium interfaces

作　　者：张涛 庄铁栓 伍俊 邢倩倩 ZHANG Tao;ZHUANG Tieshuan;WU Jun;XING Qianqian(Defense Engineering Institute,AMS,PLA,Luoyang 471023,China)

机构地区：[1]军事科学院国防工程研究院,河南洛阳471023

出　　处：《防护工程》2023年第5期28-35,共8页Protective Engineering

摘　　要：介质物态物性的变化将改变冲击波的传播状态。将3种常见物态划分为波阻抗不变的固液介质和易变的气态介质,以弹性应力波在界面处的传播分析为基础,计入环境中已达平衡的初始应力,结合冲击波基本关系式的推导过程,借鉴空气冲击波在刚性壁面的反射分析,对冲击波在不同物态介质界面的传播过程进行了理论推导分析,给出了相关参量的计算方法,并在精细化数值模拟验证后开展了参数分析。The change in physical properties of the media significantly impacts the propagation behavior of shock waves.This study classifies common material states into two categories:solid-liquid media with constant wave impedance and gaseous media with variable properties.Building on the analysis of the propagation of elastic stress waves at interfaces,accounting for initial equilibrium stress in the environment,and referencing the reflection analysis of air shock waves at rigid surfaces,the theoretical derivation and analysis of shock wave propagation across interfaces between different material states were conducted.The study presents methods for calculating relevant parameters and follows up with parameter analysis,supported by refined numerical simulations.

关 键 词：冲击波 波阻抗 介质界面 理论分析 

分 类 号：O347.5[理学—固体力学]