激光武器的毁伤效应：多物理建模与分析

孙铭远，张昊春，刘秀婷，尹德状

（哈尔滨工业大学　能源科学与工程学院，黑龙江　哈尔滨　150001）

摘　要：激光武器是一种新型的定向能武器，具有十分重要的战略意义，并将在今后战场发挥越来越重要的作用。目前，激光武器毁伤效应的评估主要是根据温度或应力单一作用进行模拟的，且对于具体物理场的计算分析仍不完善。根据Fourier 的非稳态导热方程，建立了激光辐射下靶材各节点之间的迭代方程，并在此基础上分别建立了靶材温度场和应力场模型。结果表明，根据不同材料热物性的不同，对靶材的毁伤效应往往不能仅从温度或应力单一角度进行分析。此外，结合靶材许用应力与相变点温度，对激光的毁伤效应进行了评估，为实际的激光毁伤过程提供了理论依据。

关键词：激光；毁伤效应；温度场；应力场

中图分类号：TJ95　文献标志码：A

作者简介：孙铭远（1998—），男，本科生，E-mail：914456016＠qq.com。(www.xing528.com)

Multi-physical modeling and analysis of laser weapon damage effect

SUN Mingyuan，ZHANG Haochun，LIU XiuTing，YIN Dezhuang

（School of Energy Science and Engineering，Harbin Institute of Technology，Harbin 150001，China）

Abstract：Laser weapons are a new type of directed energy weapon，which is of great strategic importance and will play an increasingly important role in the future battlefield.At present，the evaluation of the damage effect of laser weapons is mainly based on the single action of temperature or stress，and the calculation and analy⁃sis of specific physical fields are still not perfect.According to Fourier unsteady heat conduction equation，the it⁃erative equation between the targets of the target under laser irradiation is established.Based on this，the target temperature field and stress field model are established respectively.The results show that depending on the ther⁃mal properties of different materials，the cause of target damage is often not caused by temperature or stress.In addition，the damage effect of the laser is evaluated by combining the allowable stress of the target and the temper⁃ature of the phase transition point，which provides a theoretical basis for the actual laser damage process.

Keywords：laser；damage effect；temperature field；stress field