Development of avocado shape heat source model for finite element based heat transfer analysis of high-velocity arc welding process

2021 ◽  
Vol 166 ◽  
pp. 107005
Author(s):  
A.K. Mondal ◽  
B. Kumar ◽  
S. Bag ◽  
Y. Nirsanametla ◽  
P. Biswas
Keyword(s):  
Heat Transfer ◽  
Finite Element ◽  
Heat Source ◽  
High Velocity ◽  
Arc Welding ◽  
Welding Process ◽  
Source Model ◽  
Heat Transfer Analysis ◽  
Heat Source Model ◽  
Arc Welding Process

Temperature Simulation of Aluminium Alloy Double-Arc Welding Process on Simplified Conditions

2013 ◽  
Vol 661 ◽  
pp. 158-161
Author(s):  
Guo Hong Ma ◽  
Zhao Yang Zhang ◽  
Jia Ye
Keyword(s):  
Temperature Field ◽  
Heat Source ◽  
Arc Welding ◽  
Welding Process ◽  
Source Model ◽  
Heat Source Model ◽  
Finite Element Software ◽  
Single Arc ◽  
Forming Characteristics ◽  
Arc Welding Process

In this paper we used ANSYS finite element software to simulate the temperature field in 7a52 aluminum alloy double-arc welding process and analyze the welding seam's forming characteristics. We conducted the welding temperature field numerical simulation in the same welding seam forming conditions by loading heat source of single-arc and double-arc separately, which used gauss heat source model and used voltage, welding current and speed as key parameters. The experiments indicated that the designed double-arc heat source model could generally represent the double-arc welding process. Compared with single-arc welding process, the double-arc welding had higher welding efficiency and narrower heat affected zone. Furthermore, the temperature of double-arc welding pool raised faster. All these advantages could improve the welding efficiency.

Research and Application Status of Arc Welding Heat Source Model for T-Joint Numerical Simulation

2010 ◽  
Vol 154-155 ◽  
pp. 1423-1426
Author(s):  
Li Jia ◽  
Yong Zou ◽  
Zeng Da Zou ◽  
Yong Sheng Zhao ◽  
Qu Shi Yao
Keyword(s):  
Numerical Simulation ◽  
Heat Source ◽  
Arc Welding ◽  
Welding Process ◽  
Source Model ◽  
Heat Source Model ◽  
Existing Problems ◽  
Basic Work ◽  
Simulation Based ◽  
Temperature Filed

During numerical simulation of welding process, the temperature field simulation is fundamental for simulating other issues of welding process, and establishing the heat source model is the most basic work for temperature filed simulation. Based on the analysis and induction of arc welding heat source model used in T-joint welding simulation, points out the existing problems and future development direction of heat source model for T-joint, provides a reference for further research and practical application.

A Simplified Numerical Approach for Finding the Temperature Distribution in Submerged arc Welding Process

2012 ◽  
Vol 622-623 ◽  
pp. 315-318
Author(s):  
Aparesh Datta ◽  
Subodh Debbarma ◽  
Subhash Chandra Saha
Keyword(s):  
Temperature Distribution ◽  
Heat Source ◽  
Arc Welding ◽  
Welding Process ◽  
Numerical Approach ◽  
High Heat ◽  
Submerged Arc Welding ◽  
Fusion Welding ◽  
Arc Welding Process ◽  
Submerged Arc

The quality of joining has assumed a greater role in fabrication of metal in recent years, because of the development of new alloys with tremendously increased strength and toughness. Submerged arc welding is a high heat input fusion welding process in which weld is produced by moving localized heat source along the joint. The weld quality in turn affected by thermal cycle that the weldment experiences during the welding. In the present study a simple comprehensive mathematical model has been developed using a moving heat source and analyzing the temperature on one section and then the temperature distribution of other section are correlated with time delay with reference analyzed section.

scholarly journals A Study on Welding Deformation in Fiber Laser Welding of 9% Nickel Steel through Finite Element Analysis Part I: Implementation of Welding Heat Source Model

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2188
Author(s):  
Changmin Pyo ◽  
Jaewoong Kim ◽  
Du-Song Kim
Keyword(s):  
Natural Gas ◽  
Heat Source ◽  
Laser Welding ◽  
Fiber Laser ◽  
Source Model ◽  
Heat Transfer Analysis ◽  
Welding Deformation ◽  
Nickel Steel ◽  
Fiber Laser Welding ◽  
Heat Source Model

Due to various environmental regulations, the demand for natural gas, i.e., a clean energy, is expected to increase continuously. In terms of efficient storage and transportation of natural gas, liquefied natural gas has an advantageous volume of 1/600 compared to natural gas, but the materials that can be used at a cryogenic temperature of −163 °C are limited. A 9% nickel steel is a material recommended by IMO through IGC. It has excellent mechanical properties compared to other cryogenic materials, but its use has been limited due to its disadvantages in arc welding. Therefore, the main topic of this study is the automatic welding of 9% nickel steel using fiber laser and its purpose is to predict the welding deformation during fiber laser welding. First, an investigation was conducted to find the fiber laser welding heat source. A model that can cover all the models in prior studies such as curve, exponential, conical, conical-conical combination, and conical-cylinder combination models was proposed and the heat source model was constructed in a multi-layer format. Heat transfer analysis was performed using the ratio of a heat source radius and heat energy of each layer as a variable and the pass or failure of a heat source was determined by comparing the analysis results to the experimental results. By changing the variables in conjunction with the optimization algorithm, the main parameters of a passed heat source model were verified in a short period of time. In addition, the tendency of parameters according to the welding speed was checked.

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