Finite element analysis of CFRP and stainless steel laser welding

WANG Qiang; JIAO Junke; WANG Feiya; ZHANG Wenwu; SHENG Liyuan

doi:10.7510/jgjs.issn.1001-3806.2016.06.017

In order to investigate the mechanism of laser welding of carbon fiber reinforced plastics(CFRP)and stainless steel, and find out the effect of different process parameters on welding quality, a 3-D finite element model based on heat conduction welding was built by ANSYS. The distributions of temperature field and stress field were calculated by ANSYS. The effect of process parameters, including laser power, scanning welding and spot diameter, on welding width and welding depth was investigated. And the influence of welding residual stress on the quality of welding was also investigated. The results show that temperature field and residual stress distributions can be rapidly and effectively simulated by the proposed finite element model. Welding width and depth are affected by laser power, scanning welding and spot diameter. The calculated distribution and the theoretical distribution of residual stress agree well. The result confirms that the model is reliable. The result is helpful to obtain high quality welded joints of CFRP-stainless steel.

Finite element analysis of CFRP and stainless steel laser welding

Corresponding author: JIAO Junke, jiaojunke@nimte.ac.cn;

1. The Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China;

2. Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo 315201, China;

3. Shenzhen Institute, Peking University, Shenzhen 518055, China

Received Date: 2015-10-07

Accepted Date: 2015-11-11

Available Online: 2016-11-25

Abstract: In order to investigate the mechanism of laser welding of carbon fiber reinforced plastics(CFRP)and stainless steel, and find out the effect of different process parameters on welding quality, a 3-D finite element model based on heat conduction welding was built by ANSYS. The distributions of temperature field and stress field were calculated by ANSYS. The effect of process parameters, including laser power, scanning welding and spot diameter, on welding width and welding depth was investigated. And the influence of welding residual stress on the quality of welding was also investigated. The results show that temperature field and residual stress distributions can be rapidly and effectively simulated by the proposed finite element model. Welding width and depth are affected by laser power, scanning welding and spot diameter. The calculated distribution and the theoretical distribution of residual stress agree well. The result confirms that the model is reliable. The result is helpful to obtain high quality welded joints of CFRP-stainless steel.

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Reference (16)

[1]	YIN X Y, ZHU B, LIU H Zh, et al. Advance of the research in carbon fiber reinforced thermoplastic resin matrix composite[J]. Hi-Tech Fiber Application, 2011, 12(6):42-44(in Chinese).
[2]	TAN X H, SHAN J G, REN J L. Effects of Cr planting layer on shear strength and interface bonding characteristics of mind steel/CFRP joint by laser heating[J]. Acta Metallurgica, 2013, 49(6):751-756(in Chinese).
[3]	WANG X G, YU Y, LI Sh M, et al. The research on fiber reinforced thermoplastic composite[J]. Fiber Composites, 2011, 6(2):44-47(in Chinese).
[4]	XING A. Laser transmission welding of thermoplastic polyurethane films[D]. Zhenjiang:Jiangsu University, 2009:42-57(in Chinese).
[5]	WU Y W, LIU H X, LI P, et al. Experimental study of laser transmission welding between polycarbonate and polyphenylene oxide[J]. Chinese Journal of Lasers, 2015, 42(5):1801-1807(in Chinese).
[6]	GONG F, HU X Y, TAN Y, et al. Semiconductor laser transmission welding of thermoplastic polypropylene[J]. Transactions of the China Welding Institution, 2013, 34(4):109-112(in Chinese).
[7]	JIAO J K, JIANG H R, ZHANG W W. Study on thremal plastics laser transimisson welding[J]. Electromachining Mould, 2013(6):55-58(in Chinese).
[8]	JIAO J K, BAI X B, WANG X B. Finite element analysis of PMMA laser transmission welding[J]. Laser Technology, 2011,35(4):453-456(in Chinese).
[9]	CHEN Y J, GUO Zh N, LIAN H Sh. Finite element simulation and experimental study about laser micro-joining between biopolymer and metal[J]. Laser Technology, 2013, 37(6):760-765(in Chinese).
[10]	JUNG K W, KAWAHITO Y, TAKAHASHI M, et al. Laser direct joining of carbon fiber reinforced plastic to zinc-coated steel[J]. Materials and Design, 2013, 47(9):179-188.
[11]	JUNG K W, KAWAHITO Y, KATAYAMA S. Laser direct joining of carbon fibre reinforced plastic to stainless steel[J]. Science Technology of Weld Joint, 2011, 16(8):676-680.
[12]	LIU X X,HUANG R,YAO G. Numerical simulation of the temperature field of laser butt welding of titanium alloy sheet[J]. Laser Technology, 2013,37(5):700-704(in Chinese).
[13]	LIU H X, XING A, ZHANG H Zh, et al. Temperature field simulation on laser transmission welding of polyvinylchloride[J].Chinese Journal of Lasers, 2008, 35(11):1801-1807(in Chinese).
[14]	WANG X, LI P, LIU H X, et al. Temperature field simulation on laser transmission joining of PET films and titanium[J]. Chinese Journal of Lasers, 2010, 37(5):1391-1397(in Chinese).
[15]	DENG D, MURAKAWA H. Numerical simulation of temperature field and residual stress in multi-pass welds in stainless steel pipe and comparison with experimental measurements[J]. Computational Materials Science, 2006,37(3):269-277.
[16]	WU Q, XU L Y, YANG Y Q, et al. Study on laser welding residual stress of high strength steel[J]. Chinese Journal of Lasers, 2015,42(6):0603007(in Chinese).

Finite element analysis of CFRP and stainless steel laser welding

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