铝合金/碳纤维增强热塑性复合材料激光旋转焊接数值仿真分析  

Numerical Simulation of Laser Welding of Aluminium Alloy and Carbon Fiber Reinforced Thermoplastic Composites

作　　者：曹洋 夏建安 井成虎 程翔宇 徐纪豪 孙圣元 王嘉乐 焦俊科 Cao Yang;Xia Jianan;Jing Chenghu;Cheng Xiangyu;Xu Jihao;Sun Shengyuan;Wang Jiale;Jiao Junke(School of Mechanical Engineering,Yangzhou University,Yangzhou 225009,Jiangsu,China;Ningbo Silver-Ball Bearing Technology Co.,Ltd.,Ningbo 315200,Zhejiang,China)

机构地区：[1]扬州大学机械工程学院,江苏扬州225009 [2]宁波银球科技股份有限公司,浙江宁波315200

出　　处：《应用激光》2024年第4期67-79,共13页Applied Laser

基　　金：宁波市2025重大科技专项(2022Z031);镇海区“十四五”技术攻关重大专项(2023002)。

摘　　要：为探索7075铝合金与碳纤维增强热塑性复合材料(CFRTP)在激光焊接过程中的连接机理,研究不同工艺参数对焊接质量的影响规律,对7075铝合金/CFRTP激光高速旋转焊接温度场分布开展有限元仿真分析。建立了铝合金/CFRTP激光高速旋转焊接的数学模型和有限元模型,利用有限元软件对焊接过程中的温度场进行仿真分析,并研究激光功率、焊接速度、光斑半径对接头熔宽、熔深的影响规律。同时,开展铝合金/CFRTP激光高速旋转焊接实验,与数值模拟结果进行对比。结果表明,有限元模型能够有效预测焊接过程中接头的温度场分布;激光功率、焊接速度、光斑半径等工艺参数对熔宽、熔深有着重要的影响;理论仿真结果与实验结果基本吻合,有限元仿真能为实现铝合金/CFRTP之间高质量焊接提供理论指导。In order to explore the connection mechanism of 7075aluminium alloy and CFRTP in the laser welding process,and study the influence of different process parameters on the welding quality,the finite element simulation analysis of temperature field distribution of 7075aluminium alloy/CFRTP laser high-speed rotary welding was carried out in this paper.The mathematical model and finite element model of aluminium alloy/CFRTP laser high-speed rotary welding were established.The temperature field in the welding process was simulated and analyzed by using finite element software,and the influence of laser power,welding speed,and spot radius on the weld width and penetration was studied.At the same time,an aluminium alloy/CFRTP laser high-speed rotary welding experiment was carried out and compared with the numerical simulation results.The results showed that the finite element model can effectively predict the temperature distribution of the joint during welding.Laser power,welding speed,spot radius,and other process parameters have an important impact on the weld width and penetration.The theoretical simulation results are basically consistent with the experimental results,and the finite element simulation can provide theoretical guidance for achieving high-quality welding between aluminium alloy and CFRTP.

关 键 词：CFRTP 铝合金 激光焊接 温度场 有限元模拟 

分 类 号：TG456.7[金属学及工艺—焊接]