Effect of pre-tensile stress on welding residual stress filed in butt-welded dissimilar flat plates

被引：0

作者：

Zhao, Dong-Sheng ^{[1
]}

Wu, Guo-Qiang ^{[2
]}

Liu, Yu-Jun ^{[1
]}

Sun, Min-Ke ^{[1
]}

Ji, Zhuo-Shang ^{[1
]}

机构：

[1] State Key Laboratory of Structural Analysis for Industrial Equipment, School of Naval Architecture Engineering, Dalian University of Technology

[2] State Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology

来源：

Chuan Bo Li Xue/Journal of Ship Mechanics | 2013年 / 17卷 / 08期

关键词：

Pre-tension; Q235; steel; Stainless steel; Temperature filed; Welding residual stress;

D O I：

10.3969/j.issn.1007-7294.2013.08.010

中图分类号：

学科分类号：

摘要：

Thermal Elasto-plastic finite element method was used to simulate the welding residual stresses in butt-welded Q235 and 304 Stainless Steel plates with different pre-tensile stresses. The simulation results indicate that the welding residual stresses present asymmetric distribution, peak of longitudinal residual stress tends to be in 304 stainless steel side. Pre-tensile stress can decrease the longitudinal residual stress significantly, and the more the pre-loads, the lower the longitudinal residual stresses. An infrared thermal imager was also applied to measure surface temperature changing of welding materials in welding process, the results are accordant with that drawn from elasto-plastic finite element measurement.

引用

页码：920 / 924

页数：4

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