scholarly journals Study on Accurate Numerical Analysis of Welding Residual Stress and Welding Deformation Generated in Bead-On-Plate

2002 ◽  
Vol 2002 (191) ◽  
pp. 239-245 ◽  
Author(s):  
Toshio Terasaki ◽  
Daisuke Yamakawa ◽  
Shunpei Tounai
Keyword(s):  
Residual Stress ◽  
Numerical Analysis ◽  
Welding Residual Stress ◽  
Welding Deformation

Measurement and Numerical Analysis of Welding Residual Stress in Box Structure Employed for Breeder Blanket System of Iter

2011 ◽  
Vol 55 (11-12) ◽  
pp. 48-55 ◽  
Author(s):  
Hisashi Serizawa ◽  
Shinichiro Nakamura ◽  
Hiroyasu Tanigawa ◽  
Takanori Hirose ◽  
Mikio Enoeda ◽  
...  
Keyword(s):  
Residual Stress ◽  
Numerical Analysis ◽  
Welding Residual Stress ◽  
Box Structure

An Experimental Study on Improved Production Process of Large-Diameter Cylinder Assembly

2013 ◽  
Vol 427-429 ◽  
pp. 200-203
Author(s):  
Hui Fan Zeng
Keyword(s):  
Residual Stress ◽  
Large Diameter ◽  
Aging Treatment ◽  
Dimensional Accuracy ◽  
Welding Residual Stress ◽  
Production Cycle ◽  
Welding Deformation ◽  
Residual Stress State ◽  
Deformation Law ◽  
Large Cylinder

Post-welding annealing and aging treatment are commonly used to reduce welding residual stress and post-welding deformation. However, both show their limited effect in the application of large workpieces. Present study attempts to explore the residual stress state and post-welding deformation law of large workpieces by improving the production technology of the important workpieces of certain engineering equipment a large cylinder assembly. It is proposed that the deformation induced by post-welding residual stress can be effectively compensated by increasing the dimensional accuracy in cutting processing. In this way, aging process is replaced and qualified products can be obtained in a much shorter production cycle.

Numerical Analysis of Residual Stresses in Hyperbaric Welding

2012 ◽  
Author(s):  
Xiaobo Ren ◽  
Odd M. Akselsen ◽  
Sigmund K. Ås ◽  
Bård Nyhus
Keyword(s):  
Residual Stress ◽  
Numerical Analysis ◽  
Residual Stresses ◽  
Pressure Range ◽  
Structural Integrity ◽  
Sea Water ◽  
Welding Residual Stress ◽  
Transformation Plasticity ◽  
Micro Structure ◽  
Welding Procedure

Hyperbaric welding residual stress is one of the main concerns for deep water operation. This study presents the numerical investigation of residual stresses in hyperbaric welding by using WeldsimS code. The pressure range investigated in this study is from 3 to 35 bar, which corresponds to 30 to 350 msw (Meters of Sea Water). Experiments results indicate that the welding procedure might be significantly influenced within the pressure range studied. A 2D axisymmetric model has been considered in this study to simulate circumferential welding of a pipe. Phase transformations and transformation plasticity during the welding procedure have been taken into account. The main aim of the study is to predict the hyperbaric welding residual stresses. The temperature evolution and the micro-structure were also studied. Results show that residual stresses induced by hyperbaric welding are significant within the pressure range investigated, which should be assessed for the sake of structural integrity.

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