Numerical and Experimental Study on Nugget Formation in Resistance Spot Welding for High Strength Steel Sheets in Automobile Bodies

Ma, Ninshu; Murakawa, Hidekazu

Transactions of JWRI, 2009, 38(2), 19-24

Number of Access:389（2025-06-13 10:43 Counts）

Identifier to cite or link to this item: https://doi.org/10.18910/3585

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Title
Numerical and Experimental Study on Nugget Formation in Resistance Spot Welding for High Strength Steel Sheets in Automobile Bodies
Creator
NRID
1000010263328 1000010263328
ORCID
0000-0002-8088-4154 0000-0002-8088-4154
researchmap permalink
ma.ninshu ma.ninshu
Scopus Author ID
36343934100 36343934100
CreatorName
Ma, Ninshu
NRID
1000060166270 1000060166270
CreatorName
Murakawa, Hidekazu
Subject
Spot welding
Welding conditions
Nugget Formation
Simulation
Experiment
Abstract
Resistance spot welding is the most popular joining process in automobile body assembly production lines. There have been many researches concerned with spot welding for two pieces of sheets. In order to reduce the cost and improve the strength of the lightweight automobile bodies, resistance spot welding for multi-pieces of sheets has to be investigated before production. In this paper, resistance spot welding for three pieces of high strength steel sheets is mainly taken as an object and the nugget formation process is firstly investigated by experiments. Then the spot welding process is simulated by FEM program JWRIAN developed by the authors with the coupling of the electrical field, thermal field and mechanical field. The nugget size and its formation process predicted by FEM agree very well with experimental results. Based on the simulation results, weldable conditions (current, cycles and force) of spot welding for both two pieces and three pieces of high strength steel sheets can estimated with a good accuracy.
Publisher
大阪大学接合科学研究所
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
Joining and Welding Research Institute, Osaka University
Source Title
Transactions of JWRI
Volume (Issue)
38(2)
Page
19-24
Date of Issued
2009-12
Language
English
Handle URL
https://hdl.handle.net/11094/3585
DOI
https://doi.org/10.18910/3585
PISSN
03874508
NCID
AA00867058
Access Rights
open access
oaire:version
Version of Record
Category
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.38 No.2 (2009-12)