Discussion and calculation on welding residual longitudinal stress and plastic strain by finite element method

doi:10.1007/s11706-009-0005-4

Front Mater Sci Chin

2009, Vol. 3

Issue (1) : 75-77 https://doi.org/10.1007/s11706-009-0005-4

RESEARCH ARTICLE

Discussion and calculation on welding residual longitudinal stress and plastic strain by finite element method

Hong-yuan FANG¹(

), Xue-qiu ZHANG¹, Jian-guo YANG^1,2, Xue-song LIU¹, Shen QU²

1. State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China; 2. Shenyang Liming Aero-Engine Group Corporation, Shenyang 110043, China

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Abstract

In recent years, some researchers have put forward the new viewpoint that the weld is merely formed during the cooling process, not concerned with the heating process. According to this view, it can be concluded that it is not the compressive but the tensile plastic strain that may remain in the weld. To analyze the formation mechanism of the longitudinal residual stress and plastic strain, finite element method (FEM) is employed in this paper to model the welding longitudinal residual stress and plastic strain. The calculation results show that both the residual compressive plastic strain and the tensile stress in the longitudinal direction can be found in the weld.

Keywords residual stress plastic strain finite element method (FEM) temperature field

Corresponding Author(s): FANG Hong-yuan,Email:jackeee90@163.com

Issue Date: 05 March 2009

Cite this article:

Hong-yuan FANG,Xue-qiu ZHANG,Jian-guo YANG, et al. Discussion and calculation on welding residual longitudinal stress and plastic strain by finite element method[J]. Front Mater Sci Chin, 2009, 3(1): 75-77.

URL:

https://academic.hep.com.cn/foms/EN/10.1007/s11706-009-0005-4
https://academic.hep.com.cn/foms/EN/Y2009/V3/I1/75

Fig.1 Finite element model

Fig.2 Temperature histories of node A

Fig.3 Longitudinal plastic strain histories of node A

Fig.4 Longitudinal stress histories of node A

Fig.5 Longitudinal plastic strain histories of node A in the cooling process

Fig.6 Longitudinal stress histories of node A in the cooling process

1	Savage W F. A mechanism for crack formation in Hy-80 steel weldments. Welding Journal , 1967, 46: 94s-96 s
2	Wang Z C. Discuss on principle of relieving welding residual stress. Transactions of the China Welding Institution , 2000, 21(2): 55–58 (in Chinese)
3	Wang Z C, Chen H N. Further discussion on two problems of welding stress and deformation. Transactions of the China Welding Institution , 2002, 23(5): 69–72 (in Chinese)
4	Wang Z C. Rediscussion on welding stress-strain. Transactions of the China Welding Institution , 2006, 27: 108–112 (in Chinese)
5	Deng D, Murakawa H. Prediction of welding distortion and residual stress in a thin plate butt-welded joint. Computational Materials Science , 2008, 43: 353–365
6	Deng D. Theoretical prediction of welding distortion in thin curved structure during assembly considering gap and misalignment. Dissertation for the Doctoral Degree . Japan: Osaka University, 2002
7	Deng D, Luo Y, Serizawa H, . Numerical simulation of residual stress and deformation considering phase transformation effect. Transactions of JWRI , 2003, 32: 325–333
8	Goldak J, Chakravarti A, Bibby M. A new finite element model for welding heat sources. Metallurgical Transactions B , 1984, 15: 299–305

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