Analysis of Nonlinear Heat Transfer and Residual Stresses during Multi-Pass Welding of Penetration Assembly

Abstract:

Welding residual plastic strains and stresses cause errors during the assembly and reduce the strength of the structure. Based on an elastic-plastic-model, a three-dimensional finite element numerical simulation of multi-pass butt welding of a representative penetration assembly is carried out in this paper. The nonlinear transient temperature field and the real-time dynamic stresses field during multi-pass butt welding with girth welds are obtained. In the end, the residual stresses of the complicated stainless steel penetration structure are calculated by FEM software ANSYS.

• Periodical: Key Engineering Materials (Volumes 417-418)
• Pages: 149-152
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.417-418.149
• Online since: October 2009
• Authors: Hong Li, Li Li
• Keywords: Double Ellipsoid Heat Source, Elastic-Plastic Model, Penetration Assembly, Residual Strain, Residual Stress, Temperature Field

References

[1] D. Radaj: Heat Effects of Welding. Springer-Verlag Berlin Heidelberg (1997).

[2] P. Mollicone,D. Camilleri T.G.F. Gray,T. Comlekci: Simple Thermo-elastic-plastic Models for Welding Distortion Simulation. Journal of Materials Processing Technology. 176, (2006) , pp.77-86.

DOI: 10.1016/j.jmatprotec.2006.02.022

[3] LI Donglin, YU Yousheng, WEN Jialing, CHEN Mingqing: 3D Dynamic Simulation on Temperature Field of Surfacing. Journal of Wuhan University of Technology. 26（5）(2002), p.671－673 (in Chinese).

[4] LI Jinmei, LEI Yi, XU Juncheng: Numerical Simulation on Temperature Field in Welding Process based on Medium Plate of 20 Steel. Petro-Chemical Equipment. 36（3）, (2007), p.26 (in Chinese).

[5] WANG Qiang, LI Donglin: Dynamic Simulation on Temperature and Stress Field of Plate Surfacing Based on ANSYS. Journal of Wuhan University of Technology. 28（6）, (2004), p.866 －869 (in Chinese).

[6] Dean Deng, Hidekazu Murakawa: Numerical Simulation of Temperature Field and Residual Stress in Multi-pass Welds in Stainless Steel Pipe and Comparison with Experimental Measurements. Computational Materials Science. 37, (2006), pp.269-277.

DOI: 10.1016/j.commatsci.2005.07.007

[7] NI Hongfang, LING Xiang, TU Shandong: Simulation of 3D Residual Stresses Field of Multi-pass Welding by FEM. Journal of Mechanical Strength. 26(2) (2004), p.218～222 (in Chinese).

[8] S.A.A. Akbari Mousavi,R. Miresmaeili: Experimental and Numerical Analyses of Residual Stress Distributions in TIG Welding Process for 304L Stainless Steel. Journal of Materials Processing Technology. 2 0 8, ( 2 0 0 8 ), pp.383-394.

DOI: 10.1016/j.jmatprotec.2008.01.015

[9] R.H. Leggatt: Residual Stresses in Welded Structures. International Journal of Pressure Vessels and Piping. 85, (2008) pp.144-151.

DOI: 10.1016/j.ijpvp.2007.10.004