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Effects of interface conditions on heat and mass transfer during modeling of laser dissimilar welding

文献类型：期刊论文

作者Li, Zhiyong1,2,4; Yu, Gang2,3,4; He, Xiuli2,4; Li, Shaoxia4; Wang, Xu2,4; Li, Zixun2,4; Li, Haiming2; Yu G(虞钢); Li SX(李少霞); He XL(何秀丽)
刊名PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
出版日期2021-10-04
页码15
关键词Laser welding dissimilar welding numerical simulation interface conditions heat and mass transfer
ISSN号0954-4062
DOI10.1177/09544062211013863
通讯作者Yu, Gang(gyu@imech.ac.cn) ; He, Xiuli(xlhe@imech.ac.cn)
英文摘要An improved 3 D heat and mass transfer model was developed to study the effects of interface conditions during modelling of laser dissimilar welding. In detail, the interface conditions consist of the physical processes at gas/liquid surface (e.g. free surface deformation and optical absorptance), substrate interface (e.g. mixture properties in liquid phase and thermal contact condition) and solid/liquid interface (e.g. fusion line). Their effects on heat and mass transfer are numerically and experimentally analyzed, which are all non-negligible in the welding modelling. In conclusion, free surface deformation influences convection flow and should be considered in the situation of micro-welding and high energy-input welding. Besides, the energy transfer between laser and substrate is more reasonably described by the optical absorptance expressed in polynomial function. The mass transfer induced variation of mixture properties is well described by the method based on time-dependent mixture fraction. Thermal resistance between clamp and substrate should be considered in the modelling of temperature field on macroscale. The joint conductance at substrate interface could be neglected when modelling heat and mass transfer inside the melt pool, while it should be calculated in the simulation of temperature distribution based on the mechanism of heat conduction. The obtained results in this paper provide a vital insight into the interface conditions in laser dissimilar welding process.
WOS关键词NUMERICAL-SIMULATION ; ALUMINUM-ALLOY ; PHASE-CHANGE ; FLUID-FLOW ; BEHAVIOR ; CONVECTION ; STEEL
资助项目National Natural Science Foundation of China[11672304] ; Beijing Municipal Commission of Science and Technology[Z181100003818015] ; Chinese Scholarship Council (CSC)
WOS研究方向Engineering
语种英语
WOS记录号WOS:000713731400001
资助机构National Natural Science Foundation of China ; Beijing Municipal Commission of Science and Technology ; Chinese Scholarship Council (CSC)
源URL[http://dspace.imech.ac.cn/handle/311007/87904]  
专题宽域飞行工程科学与应用中心
通讯作者Yu, Gang; He, Xiuli
作者单位1.Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Li, Zhiyong,Yu, Gang,He, Xiuli,et al. Effects of interface conditions on heat and mass transfer during modeling of laser dissimilar welding[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE,2021:15.
APA Li, Zhiyong.,Yu, Gang.,He, Xiuli.,Li, Shaoxia.,Wang, Xu.,...&Li SX.(2021).Effects of interface conditions on heat and mass transfer during modeling of laser dissimilar welding.PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE,15.
MLA Li, Zhiyong,et al."Effects of interface conditions on heat and mass transfer during modeling of laser dissimilar welding".PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE (2021):15.

入库方式： OAI收割

来源：力学研究所

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