激光深熔焊接热过程数值模拟的研究进展  

Research status in numerical simulation of thermal process in laser deep penetration welding

作　　者：冯燕柱 高向东[1] 张艳喜[1] 张南峰[1] 全方红 FENG Yanzhu;GAO Xiangdong;ZHANG Yanxi;ZAHNG Nanfeng;QUAN Fanghong(Guangdong Provincial Welding Engineering Technology Research Center,Guangdong University of Technology, Guangzhou 510006,CHN;Guangdong Forging Machine Tool Factory,Foshan 528300,CHN)

机构地区：[1]广东工业大学广东省焊接工程技术研究中心,广东广州510006 [2]广东锻压机床厂有限公司,广东佛山528300

出　　处：《制造技术与机床》2019年第9期28-32,共5页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金资助项目(51675104);广东省科技计划资助项目(2016A010102015)

摘　　要：激光深熔焊接过程涉及极其复杂的物理化学反应,数值模拟是研究激光深熔焊接过程的温度场、焊件应力与变形、熔池、匙孔演变与反冲压力等问题的基础,而热过程处理是激光深熔焊接数值模拟的关键点。总结和分析了体热源模型、复合热源模型和自适应热源模型的发展情况,论述了材料热物理性能参数在数值模拟中的使用情况,讨论了激光深熔焊接数值模拟中一些关键问题如边界条件,并指出了激光深熔焊接热过程数值模拟需要进一步研究的方向。The process of laser deep penetration welding involves extremely complex physical chemical reactions.Numerical simulation is the basis of studying the temperature field,stress and deformation of welding piece,melting pool,evolution of keyhole and recoil pressure,etc.Thermal process processing is the key point in numerical simulation of laser deep penetration welding.The development of bulk heat source model,composite heat source model and adaptive heat source model are summarized and analyzed.The application of material thermal physical performance parameters in numerical simulation is discussed.Some key problems such as boundary conditions in numerical simulation of laser deep fusion welding are discussed,and the directions of further research on the numerical simulation of laser deep penetration welding process are highlighted.

关 键 词：激光深熔焊接 热过程 数值模拟 热源模型 

分 类 号：TG40[金属学及工艺—焊接]