强激光辐照7075铝合金热响应与材料尺度律关系研究

为了明确金属板受激光辐照产生的热响应与材料尺度律之间的关系。采用数值模拟和实验相结合的研究方法,开展了不同尺度律下7075铝合金板在波长为1064 nm的连续波激光辐照下的热响应研究。首先利用COMSOL有限元软件建立了金属板在连续激光辐照下的数值模型,得到不同尺度律的铝合金板的温升过程；之后开展同尺寸实验验证,对比数值仿真数据。研究结果表明:在等效时间内,不同尺度律模型温升过程一致；实验数据与仿真结果趋势相似,各尺度律下仿真与实验相对误差均小于17 %。该研究结果对于强激光辐照效应的应用与研究具有一定价值。

Thermal response of 7075 aluminum alloy with different scaling laws under high power laser

In order to clarify the relationship between the thermal response of the metal plate subjected to laser irradiation and the material scale law,the thermal response of different size 7075 aluminum alloy plates under continuous wave laser irradiation with a wavelength of 1064 nm was studied.Using numerical simulation method and experimental research method,the numerical model of metal plate temperature simulation was established by using COMSOL to obtain the temperature field distribution of metal plates of different sizes.After that,the experimental verification,analysis and comparison simulation results and experiments of the same size were carried out.The results show that the temperature rise process of different scale law models is consistent during the equivalent time;the experimental data is similar to the simulation result.The relative error between simulation and experiment under each scale law is less than 17 %.The research results have certain practical value for the engineering research of strong laser irradiation effect.