高速气流下激光辐照金属平板热⁃力响应尺度律研究  

Scaling Law for Thermo⁃Mechanical Responses of Metal Plate Subjected to Laser Irradiation Under High⁃Speed Airflow Condition

作　　者：崔悦 王睿星 马特 袁武[1,2,3] 宋宏伟 黄晨光[3] Cui Yue;Wang Ruixing;Ma Te;Yuan Wu;Song Hongwei;Huang Chenguang(Key Laboratory for Mechanics in Fluid Solid Coupling Systems,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China;School of Engineering Science,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院力学研究所流固耦合系统力学重点实验室,北京100190 [2]中国科学院力学研究所空天飞行高温气动国家重点实验室,北京100190 [3]中国科学院大学工程科学学院,北京100049

出　　处：《中国激光》2024年第12期22-31,共10页Chinese Journal of Lasers

基　　金：国家自然科学基金(11902322,12272379,12232020)。

摘　　要：高速气流作用下激光辐照结构诱导的热-力响应相似关系,因涉及多物理场之间的强耦合而非常复杂。笔者采用近似等效方法,将切向气流的作用等效为金属平板结构的力载荷和热载荷边界条件,建立了该耦合问题的无量纲控制方程,并结合主控因素分析,推导出了适用于高速气流与激光联合作用下的金属平板热-力响应特性的相似关系与尺度律。采用高速气流下强激光辐照金属平板的流-热-固多场耦合数值算例对该尺度律进行考核验证,结果表明:不同缩比率及不同马赫数条件下,满足该相似关系的缩比模型与原模型之间的热-力响应误差均在1%之内。本研究为高速气流条件下激光辐照缩比模型近似等效试验的开展奠定了理论基础。Objective Laser technology is extensively used in various fields,including additive manufacturing,removal processing,and laser weaponry.This technology has the potential to revolutionize battlefield dynamics through defensive and offensive applications.Research on laser irradiation under high-speed airflow provides a theoretical basis for efficient damage strategies and the protection of aircraft,this is crucial for deploying military laser systems.However,conducting real-scale model tests for large-scale engineering structures is challenging due to equipment limitations and testing environments.Additionally,wind tunnel tests with real-scale models are prohibitively expensive and time-consuming,preventing extensive testing.Consequently,scaled-model tests are often relied upon for regularity studies.Therefore,establishing a similarity relationship in the thermomechanical responses between real and scaled models under laser irradiation and high-speed airflow is a practical approach.Significant efforts have been made to understand the similarity theory of laser-induced thermomechanical behavior under static air conditions.Nonetheless,due to the complex fluidthermal-structural interactions in high-speed airflow,the similarity criteria for thermomechanical responses in an airflow environment significantly differ from those in static air.In this study,we propose new similarity criteria and scaling laws suitable for the thermomechanical responses of a metal plate subjected to high-speed airflow and laser irradiation.Methods To clarify the similarity relation of thermomechanical responses for metal plates under coupling conditions,the effects of the tangential airflow were equivalently converted to the structural force and thermal load boundary conditions using the approximate equivalence method,and the dimensionless governing equations of the coupling problem were established.Thus,combined with the analysis of dominant factors,the similarity criteria and scaling laws suitable for the thermomechanical responses of the me

关 键 词：激光技术 尺度律 方程分析法 金属平板 多场耦合 热-力响应 

分 类 号：TN249[电子电信—物理电子学]