scholarly journals Effects of Welding Sequence on Welding Deformation of Steel Q345D Based on Numerical Simulation with PAM-ASSEMBLY

2014 ◽  
Author(s):  
Xueyong Chen ◽  
Yifeng Xiao ◽  
Yi Li ◽  
Xiangwen Li
Keyword(s):  
Numerical Simulation ◽  
Welding Deformation ◽  
Welding Sequence

Numerical Analysis of Controlling Welding Deformation of the Wall Plate of Large Cylindrical Structure by Pre-Stress Method

2011 ◽  
Vol 189-193 ◽  
pp. 3351-3354 ◽  
Author(s):  
Chun Yuan Shi ◽  
Qing Yuan Meng ◽  
Cheng Jin
Keyword(s):  
Numerical Simulation ◽  
Numerical Analysis ◽  
Stress Level ◽  
Simulation Method ◽  
Welding Deformation ◽  
Cylindrical Structure ◽  
Numerical Simulation Method ◽  
Welding Sequence ◽  
Final Deformation

During the welding of the wall plate of cylindrical structure, the edges of cylinder generates obvious wave-like deformation and affects subsequent assembly. In this paper, based on the numerical simulation method, welding deformation controlling by pre-stress method is studied. The effects of the pre-stress level and the welding sequence on the final deformation are discussed. The results show that the level of pre-stress can obviously control the welding deformation of the longitudinal beams, but can not control the welding deformation of transverse beams. Using the selected welding sequence: welding transverse beams firstly, exerting pre-stress, and then welding longitudinal beams, this welding sequence can reduce the wave-like deformation after welding.

Influence of Welding Sequence on Welding Deformation of T-Joint

2020 ◽  
pp. 83-97
Author(s):  
Yong Qin ◽  
Ziquan Jiao ◽  
Zhiqiang Feng ◽  
Nanhui Shi ◽  
Junfeng Han ◽  
...  
Keyword(s):  
Welding Deformation ◽  
Welding Sequence

Numerical Simulation of Welding for Box Beam Structure on Bogie of High Speed Train

2011 ◽  
Vol 399-401 ◽  
pp. 1816-1819
Author(s):  
Huan Jun Liu ◽  
Jian Xin Liu ◽  
Hui Chen ◽  
Hua Ji ◽  
Zhi Yi Zhang
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
High Speed ◽  
Weathering Steel ◽  
Beam Structure ◽  
Element Analysis ◽  
Box Beam ◽  
Welding Sequence ◽  
Side Beam ◽  
Welding Sequences

In this paper a typical box beam structure on certain high speed power car was taken as study object, Based on the finite element analysis software SYSWELD, established the material parameters database for SMA490BW weathering steel, and performed the numerical simulation for the welding of typical box beam structure of side beam of high speed bogie, comparison between the simulation results and that of experiment test verified the existing welding procedures. For the purpose of studying the influence of welding sequence on the residual stress and providing theoretical support for actual production, the residual stress under different welding sequences was investigated then.

Numerical Simulation of Welding Distortion Using Shrinkage Force Approach and Application

2010 ◽  
Vol 129-131 ◽  
pp. 867-871 ◽  
Author(s):  
Yao Hui Lu ◽  
Ping Bo Wu ◽  
Jing Zeng ◽  
Xing Wen Wu
Keyword(s):  
Numerical Simulation ◽  
Welding Distortion ◽  
Railway Vehicle ◽  
Welding Deformation ◽  
Element Analysis ◽  
Force Method ◽  
The Finite Element Analysis ◽  
Numerical Simulation Methods ◽  
Shrinkage Force

The control of welding distortion during assembling process is very important. Using numerical simulation methods to obtain the welding distortion is an effective way to control the quality of welding. At first, taking the bead-on-plate welding as an example, the predictions of welding distortion were made using the shrinkage force method and the thermo-elastic-plastic method for comparison. It was concluded from the comparison that the simulation results by using the two methods are consistent. Therefore, the shrinkage force method can be applied to prediction of structural welding distortion in engineering. Based on the theory of welding shrinking force, welding deformation was predicted for the bogie side frame of railway vehicle. According to all the deformation results from the finite element analysis, the welding deformation of the bogie side frame was lager than the tolerance of quality and in reasonable agreement with the experimentally determined distortion values from literature. The work in this paper indicated that the shrinkage force method was effective to predict the welding deformation and to control the welding quality in large complex structures, such as the bogie frame of railway vehicle.

Study on FEM Numerical Simulation Method for the Welding Distortion

2011 ◽  
Vol 704-705 ◽  
pp. 1316-1321 ◽  
Author(s):  
Yao Hui Lu ◽  
Xing Wen Wu ◽  
Jing Zeng ◽  
Ping Bo Wu
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Welding Distortion ◽  
Railway Vehicle ◽  
Welding Deformation ◽  
Bogie Frame ◽  
Elastic Plastic ◽  
Side Beam ◽  
Element Method

The control of welding distortion during assembly process is very important. At present, there are mainly two numerical simulation methods for the welding distortion which are thermo-elastic-plastic finite element method and its simplified approach of inherent strains. At first, taking T-joint as an example, the welding distortions were computed using two methods mentioned above. Based on thermo-elastic-plastic finite element method, welding process was simulated by life and death element, moving heat source and transient state thermal field etc. Then, the welding distortion was calculated by inherent strains method after thermo-elastic-plastic computation. It was concluded from the comparison that the simulation results by using the two methods are consistent. Therefore, the inherent strains method can be conveniently and economically applied to prediction of structural welding distortion in engineering. Applied the inherent strains method, welding deformation was predicted for the bogie frame side beam of high speed train. According to the deformation results from the finite element analysis, the welding deformation of the bogie frame side beam was lager than the tolerance of quality and in reasonable agreement with the experimentally determined distortion values. The work in this paper indicated that the inherent strains method was effective to predict the welding deformation so as to control the welding quality in large complex structures, such as the bogie frame of railway vehicle. Key words: welding distortion; thermo-elastic-plastic method; inherent strains approach; numerical simulation; bogie frame;

scholarly journals Prediction and Welding sequence of Minimum Welding Deformation in Large Steel Block Welding

2017 ◽  
Vol 35 (6) ◽  
pp. 8-14 ◽  
Author(s):  
Jeong-ung Park ◽  
Gyubaek An ◽  
Seung-hyun Yang
Keyword(s):  
Welding Deformation ◽  
Large Steel ◽  
Welding Sequence

Thermal Elasto-Plastic Analysis of Welding Sequence for Least Distortion of Overlay Welded Structure

2018 ◽  
Author(s):  
Sungwook Kang ◽  
Jaewoong Kim ◽  
Dongjoo Kim ◽  
Youngjae Jang ◽  
Jaeyoung Cho
Keyword(s):  
Carbon Steel ◽  
Combustion Process ◽  
Cooling Water ◽  
Welding Deformation ◽  
Wall Panel ◽  
Temperature Oxidation ◽  
Water Wall ◽  
Welded Structure ◽  
Welding Sequence ◽  
Overlay Welding

Generally, equipment or mechanical parts are worn out by abrasion, impact, erosion, and environmental corrosion. To reduce these losses, the welding that wears the surface of the material with abrasion or corrosion resistance is called overlay welding. Corrosion and high temperature oxidation are very important factors in overlay welding material selection because they have a great effect on wear rate. Typical equipment is made of carbon steel, stainless steel or a material that is not wear resistant. Therefore, overlay welding is applied to parts where the parts themselves are subject to severe wear or corrosion. The diffusion of chlorine and alkaline ash during the combustion process causes foiling, corrosion, and erosion in the water wall panel & tube which is a heat transfer device. In order to protect the water wall panel & tube from various chemical and physical phenomena occurring during the combustion process, heat-resistant alloy steel such as Inconel is overlay welded on the outer surface of carbon steel pipe. However, since the length of the water wall panel & tube is more than 7 meters, the deformation after overlay welding is very large and the straightening work requires a lot of time and money. Also, since cooling water flows through the pipe during welding, the temperature of the cooling water also affects the welding deformation. In this study, welding process sequence and coolant temperature are optimized to minimize welding deformation during overlay welding.

The Deformation Simulation of the Laser-MIG Hybrid Welding in Fillet-Welded Joint

2011 ◽  
Vol 117-119 ◽  
pp. 1566-1570 ◽  
Author(s):  
You Qi Wang ◽  
Bing Tan ◽  
Bing Ma ◽  
Zhi Hua Ma
Keyword(s):  
Numerical Simulation ◽  
Room Temperature ◽  
Welded Joint ◽  
Weld Zone ◽  
Welding Deformation ◽  
Hybrid Welding ◽  
Deformation Simulation ◽  
Research Show

The numerical simulation of the fillet-welded joint which is welded with the four kind of clamped methods by laser-MIG hybrid welding is researched by the SYSWELD software. The results of the numerical simulation are compared with the results of the experienced welding. The results of research show: The joint of the laser-MIG hybrid welding was simulated well by the SYSWELD software. The simulating result is deviated 10% from the result of the actual deformation. The laser-MIG hybrid welding deformation of the aluminum structure is least when the holding position is in the near weld zone and the clamps are unloaded near the room temperature.

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