Numerical simulation of welding temperature field, residual stress and deformation induced by electro slag welding

2012 ◽  
Vol 62 ◽  
pp. 23-34 ◽  
Author(s):  
Dean Deng ◽  
Shoichi Kiyoshima
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Temperature Field ◽  
Welding Temperature ◽  
Stress And Deformation ◽  
Residual Stress And Deformation

Finite Element Analysis of Temperature Filed and Stress Field of Reducer

2014 ◽  
Vol 881-883 ◽  
pp. 1447-1450
Author(s):  
Jing Zhang ◽  
Fei Wang
Keyword(s):  
Residual Stress ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Temperature Field ◽  
Stress Field ◽  
Residual Stress Field ◽  
Element Analysis ◽  
Welding Temperature ◽  
Stress And Deformation ◽  
Residual Stress And Deformation

Abstract.The connection mode of reducer with straight tube on both sides are the welding connection. There are two weld at the both side of reducer and there has a great influence on residual stress and deformation in the process of welding . Based on the particularity of reducer welding, the paper is focus on the residual stress and deformation in the process of welding, using large-scale finite element analysis software ANSYS .The DN500X450 reducer model is established.The welding temperature field and residual stress field is analysis and calculation and analysis the influence on temperature and stress distribution of reducer. The results show that the maximum of the temperature and the residual stress is located in the big side and reduce the welding seam, and the obvious deformation also find in the big side and reduce joint . The reducing pipe’s distribution of temperature field and residual stress field are obtained,providing the basis to establish properly and optimize of welding process.

Welding Residual Stress's Numerical Simulation and Relieving of Guyed Mast Earplate Joint Substructure

2011 ◽  
Vol 216 ◽  
pp. 218-222 ◽  
Author(s):  
Wen Li Wang ◽  
Wei Lian Qu ◽  
Jie He
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Temperature Field ◽  
Stress Field ◽  
Residual Stresses ◽  
Welding Residual Stress ◽  
Welding Stress ◽  
Welding Temperature ◽  
Joint Properties ◽  
Guyed Mast

The dynamic stress-strain and welding residual stress during welding are the significant factors which lead to welded cracking and debasement of the joint properties. Therefore, the welding residual stresses are still very importang problems.A large number of guyed mast accidents study shows that the welded joints of earplate and shaft were easily to be destroyed. Therefore, the accurate assessment of the guyed maste earplate joint substructure’s welding residual stress is of great significance. The theory and method of simulation of the welding temperature field and welding stress field by finite element method is first introduced, and then the earplate substructure refine model is established which was up to the welding numerical simulation. Based on ANSYS software’s APDL language to apply the welding heat source load, we can get and save the welding temperature field results at each time. Conversing the thermal analysis element into structure element to finish the caculation of the welding stress field. Eventually by adopting the elimination remnant technology to remove the part of welding residual stresses, we can got the final welding residual stress in different relieving proportion.

Numerical Simulation of Thermal Stress in Castings Using FDM/FEM Integrated Method

2005 ◽  
Vol 490-491 ◽  
pp. 85-90 ◽  
Author(s):  
Xiang Xue ◽  
Jing Tian ◽  
Guoming Xiu
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Residual Stress ◽  
Simulation System ◽  
Stress Evolution ◽  
Practical Application ◽  
Integrated Method ◽  
Stress And Deformation ◽  
Residual Stress And Deformation ◽  
Good Agreement

A numerical simulation system, which integrated FDM (Finite Difference Method) and FEM (Finite Element Method) and coupled temperature field and stress field, was established. This system was then validated by simulation of a stress frame casting. The calculated results are satisfactory and in good agreement with the theoretical analysis. As a practical application, a wave-guide casting was simulated. The stress evolution during casting solidification, residual stress and deformation are predicted.

Numerical Simulation of Residual Stress Distribution Produced by Shot Peening

2011 ◽  
Vol 213 ◽  
pp. 339-343
Author(s):  
Yuan Song Zeng ◽  
Xia Huang ◽  
Li Juan Cao ◽  
Shou Ju Li
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Stress Distribution ◽  
Constitutive Model ◽  
Shot Peening ◽  
Target Material ◽  
Residual Stress Distribution ◽  
Plastic Behavior ◽  
Stress And Deformation ◽  
Residual Stress And Deformation

The shot peening process is largely used for the surface treatment and forming. The residual stress distribution developed within material may induce distortion of the component. The residual stress formed during the shot peening process is simulated numerically. The elastic-plastic constitutive model is adopted to describe the plastic behavior of the target material. The influence of shot peen speed on residual stress and deformation distribution is discussed.

Numerical Simulation of Welding Temperature Field on Side Beam of Train Bogie

2011 ◽  
Vol 291-294 ◽  
pp. 522-526
Author(s):  
De Liang Ren ◽  
Min Fang ◽  
Jian Li ◽  
Shen Wei Yu ◽  
Hao Guo ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Temperature Field ◽  
Change Process ◽  
Welding Residual Stress ◽  
Welding Temperature ◽  
Side Beam ◽  
Simulation Based ◽  
Ultimate Result ◽  
Transient Thermal

Numerical simulation based on finite element modeling is used widely for the prediction of welding residual stress and distortion. Considering this method, the accuracy of the ultimate result of the residual stress and distortion field is depended greatly on the accuracy of the welding temperature field. The APDL languages of ANSYS procedure was used in this study. In order to model the addition of the filler to the weld, element birth and death technology was selected. It well performed to simulate the moving of the heat source and the process of transient thermal convection. The results show that the change process and the distribution of the welding temperature field agree well with the weld reality.

Numerical Simulation for Residual Stress and Deformation of Surface Welding on Membrane Water-Wall

2014 ◽  
Vol 490-491 ◽  
pp. 594-599
Author(s):  
Fan Ling Meng ◽  
Ai Guo Liu
Keyword(s):  
Residual Stress ◽  
Great Influence ◽  
Residual Deformation ◽  
Welding Residual Stress ◽  
Finite Element Software ◽  
Welding Sequence ◽  
Surface Welding ◽  
Stress And Deformation ◽  
Welding Sequences ◽  
Residual Stress And Deformation

Automatic MIG was adopted to weld Inconel 625 alloy on 20 G Membrane Waterwall, which can improve the capacities of high temperature corrosion resistance and wear resistance. To study the influence of Membrane Waterwall surface welding sequences on residual stress and residual deformation, this paper utilized finite element software ABAQUS and segmented moving heat source model to simulate the sequence welding, balanced welding from the middle to sides, balanced welding from sides to the middle, balanced skip welding from middle to sides and balanced skip welding from sides to the middle and studied their residual stresses and deformations. The simulation results indicated that there was a great influence of welding sequences on the residual stress and deformation. The optimal welding sequence was balanced skip welding from middle to sides and balanced skip welding from sides to the middle, which could change the stress distribution, decrease the welding residual stress by 17%, realize the even deformation of the whole welding section and decrease the bending deformation by 50%.

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