Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy | |
Chen XY(陈旭阳); Yu G(虞钢); He XL(何秀丽); Li SX(李少霞); Miao HB(苗海宾) | |
Source Publication | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY |
2018-04-01 | |
Volume | 96Issue:2018-01-04Pages:209-222 |
ISSN | 0268-3768 |
Abstract | 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. |
Keyword | Droplet impact Hybrid laser-MIG welding Aluminum alloy Molten pool dynamics Simulation |
DOI | 10.1007/s00170-017-1509-1 |
URL | 查看原文 |
Indexed By | SCI ; EI |
Language | 英语 |
WOS ID | WOS:000428797500016 |
WOS Keyword | NUMERICAL-SIMULATION ; HEAT-TRANSFER ; GAS-METAL ; TRANSPORT ; MODE ; 304-STAINLESS-STEEL ; SOLIDIFICATION ; SYSTEMS ; STEEL |
WOS Research Area | Automation & Control Systems ; Engineering, Manufacturing |
WOS Subject | Automation & Control Systems ; Engineering |
Funding Organization | National Natural Science Foundation of China [11272316, 11272317, 11672304, 11502269] ; Chinese Academy of Sciences [yz201636] |
Classification | 二类 |
Ranking | 1 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/77807 |
Collection | 先进制造工艺力学实验室 |
Affiliation | 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 |
Recommended Citation 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. |
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IrJ2018192.pdf(4943KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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