Volume 19, Issue 8 (August 2019)                   Modares Mechanical Engineering 2019, 19(8): 1979-1987 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Torabi A, kolahan F. Prediction of Weld-Section Geometry in Pulsed Laser Welding Using Different Thermal Models for Thin Stainless Steel Sheets. Modares Mechanical Engineering 2019; 19 (8) :1979-1987
URL: http://mme.modares.ac.ir/article-15-17794-en.html
1- Mechanical Engineering Department, Engineering Faculty, Ferdowsi University of Mashhad, Mashhad, Iran
2- Mechanical Engineering Department, Engineering Faculty, Ferdowsi University of Mashhad, Mashhad, Iran , kolahan@um.ac.ir
Abstract:   (2149 Views)
Pulsed laser welding have a wide application in welding of thin sheet because of high intensity of its localized heat source. In the current study, 3 experimental tests with low, medium, and large level of energy and also, the 3D finite element simulation of Nd:YAG pulsed laser welding in thin sheet AISI316L have been done. Thermal analyzes were done with ABAQUS software in transient heat transfer. In order to increase the accuracy of thermal model, heat losses were considered as convection, radiation, and thermal conduction. 3 thermal models with different heat flux distribution as Gaussian surface, Gaussian volume, and conical volume were used. The main aim of this study is the selection of best thermal model between 3 mentioned thermal models to estimate the melt pool geometry with high accuracy. In addition, with defining and applying the shape factor in 3 thermal models, the finite element analyses were carried out in order to enhance the precision of estimated melt pool geometry. After thermal analysis, the melt pool geometry dimensions are extracted for each of the mentioned thermal models and compared with experimental results. Results show that thermal analysis with Gaussian surface model have the melt pool geometry accurately just in welding with low energy. Also, the conical model could estimate the melt pool geometry in all levels of energy with acceptable accuracy. Therefore, the pyramidal thermal model can be selected as the most suitable model for simulating pulsed laser welding in thin steel sheets.
Full-Text [PDF 1060 kb]   (1264 Downloads)    
Article Type: Original Research | Subject: Welding
Received: 2018/03/16 | Accepted: 2019/01/20 | Published: 2019/08/12

1. Kim K, Lee J, Cho H. Analysis of pulsed Nd: YAG laser welding of AISI 304 steel. Journal of Mechanical Science and Technology. 2010;24(11):2253-2259. [Link] [DOI:10.1007/s12206-010-0902-6]
2. Liao YC, Yu MH. Effects of laser beam energy and incident angle on the pulse laser welding of stainless steel thin sheet. Journal of Materials Processing Technology. 2007;190(1-3):102-108. [Link] [DOI:10.1016/j.jmatprotec.2007.03.102]
3. Kaitanov AY, Ozersky AD, Zabelin AM, Kislov VS. Static and fatigue strengths of laser-welded overlap joints with controlled penetration. Seventh International Conference on Laser and Laser-Information Technologies, 2001, Vladimir, Suzdal, Russian Federation. Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE); 2002. [Link] [DOI:10.1117/12.464120]
4. Rosenthal D. The theory of moving source of heat and its application to metal treatment. Transactions of ASME. 1946;68:849-866. [Link]
5. Pavelic V, Tanbakuchi R, Uyehara OA, Myers PS. Experimental and computed temperature histories in gas tungsten arc welding of thin plates. Weld J. 1969;48(7):295-305. [Link]
6. Krutz GW, Segerlind LJ. Finite element analysis of welded structures. Welding Research Supplement. 1978 Jul:211-s-216-s. [Link]
7. Friedman E. Thermomechanical analysis of the welding process using the finite element method. Journal of Pressure Vessel Technology. 1975;97(3):206-213. [Link] [DOI:10.1115/1.3454296]
8. Goldak J, Chakravarti A, Bibby M. A new finite element model for welding heat sources. Metallurgical Transactions B. 1984;15(2):299-305. [Link] [DOI:10.1007/BF02667333]
9. Akbari M, Saedodin S, Toghraie D, Shoja Razavi R, Kowsari F. Experimental and numerical investigation of temperature distribution and melt pool geometry during pulsed laser welding of Ti6Al4V alloy. Optics & Laser Technology. 2014;59:52-59. [Link] [DOI:10.1016/j.optlastec.2013.12.009]
10. Yuquan G, Dongjiang W, Guangyi M, Dongming G. Numerical simulation and experimental investigation of residual stresses and distortions in pulsed laser welding of hastelloy C-276 thin sheets. Rare Metal Materials and Engineering. 2014;43(11):2663-2668. [Link] [DOI:10.1016/S1875-5372(15)60022-4]
11. Zain-ul-abdein M, Nélias D, Jullien JF, Deloison D. Experimental investigation and finite element simulation of laser beam welding induced residual stresses and distortions in thin sheets of AA 6056-T4. Materials Science and Engineering A. 2010;527(12):3025-3039. [Link] [DOI:10.1016/j.msea.2010.01.054]
12. Han Q, Kim D, Kim D, Lee H, Kim N. Laser pulsed welding in thin sheets of Zircaloy-4. Journal of Materials Processing Technology. 2012;212(5):1116-1122. [Link] [DOI:10.1016/j.jmatprotec.2011.12.022]
13. Moraitis GA, Labeas GN. Prediction of residual stresses and distortions due to laser beam welding of butt joints in pressure vessels. International Journal of Pressure Vessels and Piping. 2009;86(2-3):133-142. [Link] [DOI:10.1016/j.ijpvp.2008.11.004]
14. Suresh Kumar K. Numerical modeling and simulation of a butt joint welding of AISI 316L stainless steels using a pulsed laser beam. Materials Today Proceedings. 2015;2(4-5):2256-2266. [Link] [DOI:10.1016/j.matpr.2015.07.246]
15. ASM International, editor. Atlas of stress-strain curves. Materials Park OH: ASM International; 2002. [Link]
16. Kuang JH, Hung TP, Chen CK. A keyhole volumetric model for weld pool analysis in Nd:YAG pulsed laser welding. Optics & Laser Technology. 2012;44(5):1521-1528. [Link] [DOI:10.1016/j.optlastec.2011.12.006]

Add your comments about this article : Your username or Email:

Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.