中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 先进制造工艺力学重点实验室
Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy

文献类型：期刊论文

作者Chen XY(陈旭阳); Yu G(虞钢); He XL(何秀丽); Li SX(李少霞); Miao HB(苗海宾)
刊名INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
出版日期2018-04-01
卷号96期号:2018-01-04页码:209-222
关键词Droplet impact Hybrid laser-MIG welding Aluminum alloy Molten pool dynamics Simulation
ISSN号0268-3768
DOI10.1007/s00170-017-1509-1
英文摘要In order to investigate the effect of droplet impact on molten pool dynamics in hybrid laser-MIG (metal inert gas) welding, a three-dimensional mathematical model was developed, and a new approach to simulate the droplet impact was proposed. In the model, the droplet heat and impact under the influence of laser was considered, and the deformation of molten pool was calculated with considering droplet impact and arc pressure. To simplify the model, a modified body heat source model was presented for laser source to take into account multiple reflections and Fresnel absorption. Surface tension, electromagnetic force, and buoyancy were considered to calculate the fluid flow pattern. Furthermore, several dimensionless numbers were used to recognize the importance of the driving forces in molten pool. It was found that molten pool dynamics and final weld bead geometry were strongly affected by the droplet impact. To demonstrate the importance of droplet impact, the temperature, velocity distribution, and the deformation of molten pool were analyzed and compared under different conditions. With considering droplet impact, the penetration was bigger, and the width was smaller. Furthermore, the simulated weld bead geometry was in good agreement with experimental measurement.
分类号二类
URL标识查看原文
WOS关键词NUMERICAL-SIMULATION ; HEAT-TRANSFER ; GAS-METAL ; TRANSPORT ; MODE ; 304-STAINLESS-STEEL ; SOLIDIFICATION ; SYSTEMS ; STEEL
WOS研究方向Automation & Control Systems ; Engineering, Manufacturing
语种英语
WOS记录号WOS:000428797500016
资助机构National Natural Science Foundation of China [11272316, 11272317, 11672304, 11502269] ; Chinese Academy of Sciences [yz201636]
源URL[http://dspace.imech.ac.cn/handle/311007/77807]  
专题力学研究所_先进制造工艺力学重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Chen XY,Yu G,He XL,et al. Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2018,96(2018-01-04):209-222.
APA 陈旭阳,虞钢,何秀丽,李少霞,&苗海宾.(2018).Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,96(2018-01-04),209-222.
MLA 陈旭阳,et al."Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 96.2018-01-04(2018):209-222.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。