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

doi:10.1177/09544062211013863

CORC > 力学研究所 > 中国科学院力学研究所 > 宽域飞行工程科学与应用中心

	Effects of interface conditions on heat and mass transfer during modeling of laser dissimilar welding
	Li ZY(李志永)1,2,4; Yu G(虞钢)2,3,4; He XL(何秀丽)2,4; Li SX(李少霞)4; Wang X(王旭)2,4; Li ZX(李梓洵)2,4; Li HM 2
刊名	PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
	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
DOI	10.1177/09544062211013863
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.
分类号	Q3
资助项目	National Natural Science Foundation of China[11672304] ; Beijing Municipal Commission of Science and Technology[Z181100003818015] ; Chinese Scholarship Council (CSC)
WOS关键词	NUMERICAL-SIMULATION ; ALUMINUM-ALLOY ; PHASE-CHANGE ; FLUID-FLOW ; BEHAVIOR ; CONVECTION ; STEEL
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)
其他责任者	Yu, Gang ; He, Xiuli
内容类型	期刊论文
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
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 ZY,Yu G,He XL,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	李志永.,虞钢.,何秀丽.,李少霞.,王旭.,...&Li HM.(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	李志永,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.