碳纤维增强热塑性复合材料/钛合金激光焊接模拟仿真研究  

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

作　　者：焦俊科 徐纪豪[1] 井成虎 曾堃 孙圣元 茹浩磊 张文武[2] 王斌[2] JIAO Junke;XU Jihao;JING Chenghu;ZENG Kun;SUN Shengyuan;RU Haolei;ZHANG Wenwu;WANG Bin(Yangzhou University,Yangzhou 225009,China;Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China;Yangzhou Hanjiang Yangzi Automobile Interior Decoration Co.,Ltd.,Yangzhou 225009,China)

机构地区：[1]扬州大学,扬州225009 [2]中国科学院宁波材料技术与工程研究所,宁波315201 [3]扬州市邗江扬子汽车内饰件有限公司,扬州225009

出　　处：《航空制造技术》2022年第21期45-53,共9页Aeronautical Manufacturing Technology

基　　金：深圳市基础研究重点项目(JCYJ20200109144604020、JCYJ20200109144608205);扬州市邗江科技计划(HJZ2021003);宁波市2025重大科技专项(2022Z013)。

摘　　要：为研究碳纤维增强热塑性复合材料(CFRTP)与钛合金激光高速旋转焊接接头形成机理,探索工艺参数对接头质量的影响规律,建立了CFRTP/钛合金激光高速旋转焊接数学模型,利用有限元方法对焊接接头温度分布进行理论计算,分析了激光功率、焊接速度和光斑半径等工艺参数对接头熔宽和熔深的影响规律,并将理论计算结果与试验结果进行了对比分析。结果表明,利用有限元模拟仿真能够较好地预测CFRTP/钛合金接头的温度场分布;通过对温度场求解结果的数值分析,可以实现CFRTP/钛合金激光焊接过程中接头熔深、熔宽的预测;理论计算结果与试验结果基本吻合,表明模拟仿真能够为CFRTP/钛合金高质量激光焊接提供理论支持。In order to study the formation mechanism of laser high-speed rotating welded joint of carbon fiber reinforced thermoplastic composites(CFRTP)and titanium alloy,and explore the influence of process parameters on the joint quality,a mathematical model of laser high-speed rotating welding of CFRTP/titanium alloy was established.The temperature distribution was calculated with finite element method,and the influence of laser power,welding speed and spot size on the weld width and penetration was analyzed.The theoretical calculation results were compared with the experimental results.The results showed that the finite element simulation can predict the temperature field distribution of CFRTP/titanium alloy joints.Through the numerical analysis,the weld penetration and weld width of CFRTP/titanium alloy during laser welding can be predicted.The theoretical calculation results are basically consistent with the experimental results,which means that the simulation can provide theoretical support for high quality laser welding of CFRTP/titanium alloy.

关 键 词：碳纤维热塑性复合材料(CFRTP) 钛合金 激光焊接 温度场 有限元模拟 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程] V46