电弧熔丝单层单道积材残余应力模拟分析及锤击消除研究

doi:10.11896/cldb.19050113

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Abstract In this paper, the finite element software SYSWELD was used to establish the three-dimensional model of single-track surfacing, and the double-ellipsoid heat source was used to simulate the temperature field and stress field of the welding process. Then the effect of welding parameters on residual stress was investigated. The results show that using lower line energy heat input, low material accumulating rate and high preheating temperature can effectively reduce the residual stress in a certain range. Based on ABAQUS software, the residual stress of accumulation material is introduced into the hammering model. The simulation analysis shows that the material will return to elastic deformation and finally form plastic contact deformation when the material deformation reaches the maximum during the hammering process. After hammering, the resi-dual stress in weld and heat affected zone decreases greatly, and the residual tensile stress in a certain depth of hammering surface changes into compressive stress. The hammering test proves that the hammering method can effectively reduce the residual stress of accumulation material and transform the local residual tensile stress into compressive stress in a certain depth range.

Key words： fuse accumulation residual stress field numerical simulation hammering

Published: 14 July 2020

CLC number:

TG455

Fund:This work was financially supported by the National Key R & D Program Project (2018YFB1106502), Chongqing Technology Innovation and Application Demonstration Pproject (cstc2018jszx-cyzdX0121), National Industrial Foundation Project (TC180A3Y1/18), Chongqing Technology Innovation and Application Development Project (cstc2019jscx-mbdx0080)

About author:: Guozheng Quanreceived Ph.D. degree in material science and engineering from the Chongqing University (CQU), Chongqing, China, in 2007. He is currently a professor at Chongqing University. His research inte-rests include microstructural evolution in plastic forming process, multi-field and multi-scale simulation-based design optimization.

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	QUAN Guozheng
	SHI Ruiju
	LIU Qiao
	ZHAO Jiang
	ZHOU Jie
	WANG Yueqiao

Cite this article:

QUAN Guozheng,SHI Ruiju,LIU Qiao, et al. Analysis and Elimination of Residual Stress in Single Layer and Single Channel of Arc Fuse Accumulation[J]. Materials Reports, 2020, 34(14): 14154-14160.

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http://www.mater-rep.com/EN/10.11896/cldb.19050113 OR http://www.mater-rep.com/EN/Y2020/V34/I14/14154

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