碳纤维/环氧树脂编织结构激光辐照热传导效应仿真研究  

Thermal Conduction Effect Simulation of Laser Irradiation on Woven Carbon Fiber/Epoxy Resin Structures

作　　者：卓越洋 贺子安 刘涛[1,2,4] 汪贺[1,2,3] 刘兆和 熊小强 陈晓龙 何兵[1,2] Zhuo Yueyang;He Zian;Liu Tao;Wang He;Liu Zhaohe;Xiong Xiaoqiang;Chen Xiaolong;He Bing(Wangzhijiang Innovation Center for Laser,Aerospace Laser Technology,and System Department,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Department of Optics and Optical Engineering,University of Science and Technology of China,Hefei 230026,Anhui,China)

机构地区：[1]中国科学院上海光学精密机械研究所空天激光技术与系统部王之江创新中心,上海201800 [2]中国科学院上海光学精密机械研究所上海市全固态激光器及应用技术重点实验室,上海201800 [3]中国科学院大学材料与光电研究中心,北京100049 [4]中国科学技术大学光学与光学工程系,安徽合肥230026

出　　处：《光学学报》2024年第11期133-143,共11页Acta Optica Sinica

基　　金：国家基础科研项目(JCYJ-2023-33);江苏省科技成果转化专项资金项目(BA2020004)。

摘　　要：本文根据碳纤维/环氧树脂复合材料内部编织结构导致的径向和轴向导热系数差异,以及垂直纤维方向的环氧树脂层和碳纤维层的层叠结构建立了复合导热系数、密度和比热容的阶梯变化模型,并根据材料的物理性质理论给出碳纤维/环氧树脂复合材料对激光的吸收率数值约为0.96。基于该模型利用COMSOL软件仿真计算了碳纤维/环氧树脂复合材料在高斯激光束平行/垂直材料内部纤维取向辐照的烧蚀行为,得到了激光功率、辐照时间对材料温度、烧蚀深度以及烧蚀热的影响规律。结果表明,激光平行纤维方向辐照材料时,材料向深度导热迅速,易形成较大的烧蚀坑,激光功率设置为400、600、800、1000 W辐照10 s时,分别形成0.642、1.721、2.846、3.990 mm的烧蚀深度;激光垂直纤维方向辐照材料时,材料的温升速率受环氧树脂和碳纤维层的叠加以及环氧树脂热解的热隔绝影响,难以向深度导热,烧蚀深度较浅,在光斑直径为10 mm、激光功率设置为800、1000 W辐照10 s时,分别形成0.567、1.243 mm的烧蚀深度。Objective As a new type of material with carbon fiber as the reinforcing material and epoxy resin as the matrix,carbon fiber/epoxy resin composite materials have been widely employed in aerospace,automotive manufacturing,and other fields in the past decade.Laser technology serving as a novel material processing means has found widespread applications in various fields.However,the mechanism of laser interaction with carbon fiber/epoxy resin composite materials,such as irradiation and material processing,is not fully understood.Therefore,research on the resistance of carbon fiber/epoxy resin composite materials to laser irradiation has emerged.Currently,research on laser irradiation of carbon fiber/epoxy resin composite materials both domestically and internationally is mainly experimental.However,the anisotropy of the physical properties of composite materials and the differences in material component physical properties make it challenging to build theoretical models that accurately represent the materials.Consequently,existing theoretical models are often simplistic and do not fully align with the actual behavior of carbon fiber/epoxy resin composite materials under laser irradiation,resulting in difficulties in studying the effects of laser irradiation on these materials.Therefore,we aim to address the physical structure and properties of carbon fiber/epoxy resin composite materials by building a novel stepped variation model in physical parameters such as thermal conductivity.The research focuses on simulating the laser irradiation of carbon fiber/epoxy resin composite materials from two dimensions of parallel fiber orientation and vertical fiber orientation to provide insights into the behavior of these materials under laser irradiation.Methods We propose and build a novel stepped variation model for laser irradiation of carbon fiber/epoxy resin composite materials based on their complex internal woven and stacked structures.This model constructs new expressions for thermal conductivity,density,and specific h

关 键 词：碳纤维/环氧树脂复合材料 导热系数 阶梯变化模型 温度场 烧蚀深度 烧蚀热 

分 类 号：TN249[电子电信—物理电子学]