碳纤维复合材料激光切割温度场研究  

Research and Analysis of Temperature Field in Laser Cutting of Carbon Fiber Composite

作　　者：侯红玲[1] 吕瑞虎 赵永强[1] 何亚银[1] 王长乾 宫经珠 Hou Hongling;Lü Ruihu;Zhao Yongqiang;He Yayin;Wang Changqian;Gong Jingzhu(School of Mechanical Engineering,Shaanxi University of Technology,Hanzhong,Shaanxi 723000,China;2205 Instutute of China North Industries Group,Xi’an,Shaanxi 710065,China)

机构地区：[1]陕西理工大学机械工程学院,陕西汉中723000 [2]中国兵器工业第二〇五研究所,陕西西安710065

出　　处：《应用激光》2021年第1期141-147,共7页Applied Laser

基　　金：陕西省自然科学基础研究计划项目(2019JM-466);陕西省教育厅专项科研计划项目(18JK0148)。

摘　　要：为了探索激光切割工艺参数对碳纤维复合材料温度场的影响,采用有限元模拟分析和试验验证的方法,综合考虑辅助气体冷却和热辐射作用,定性模拟分析了激光功率、扫描速度和激光光斑半径对碳纤维复合材料厚度方向和垂直于激光扫描方向的温度场影响规律。结果表明:激光切割工艺参数对试件厚度和垂直切割方向的热影响具有一致性;吸收能量较多时造成基体气化区域比烧蚀区域大,当激光能量降低时,烧蚀区域逐渐大于气化区域;获得的激光切割工艺参数与温度之间的关系,能够指导实际加工,提前预测激光切割碳纤维复合材料热影响区,为激光热量传播和控制热影响区提供依据。To explore the process of laser cutting parameters on the temperature field, the influence of carbon fiber composite material with the method of the finite element simulation analysis and test, considering the auxiliary gas cooling and heat radiation effect, the qualitative simulation analysis of the laser power, scanning speed and laser spot radius of carbon fiber composite material thickness direction and perpendicular to the direction of laser scanning the influence law of temperature field, the results show that the laser cutting process parameters on the specimen thickness and vertical cutting direction of thermal effects have consistency. When more energy is absorbed, the gasification region of the matrix is larger than the ablation region. When the laser energy decreases, the ablation region is gradually larger than the gasification region. The relationship between laser cutting process parameters and temperature can guide the actual processing, predict the thermal affected area of carbon fiber composites in advance, and provide basis for laser heat transmission and control of thermal affected area.

关 键 词：碳纤维复合材料 激光功率 扫描速度 光斑半径 温度场 

分 类 号：TN249[电子电信—物理电子学]