Numerical simulation of electron beam welding with beam oscillations

International Conference on Mechanical Engineering, Automation and Control Systems 2016

机械制造;无线电电子学;计算机科学

Trushnikov, D.N.^1 ; Permyakov, G.L.^1

Department for Welding Production and Technology of Constructional Materials, Perm National Research Polytechnic University, 29 Komsomolsky ave., Perm

614990, Russia^1

关键词: Computer clusters;    Comsol multiphysics;    Heat and mass transfer process;    Heat conduction equations;    Hydrodynamic process;    Simulation packages;    Thermocapillary convection;    Three-dimensional mathematical models;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/177/1/012085/pdf
DOI  :  10.1088/1757-899X/177/1/012085

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

This research examines the process of electron-beam welding in a keyhole mode with the use of beam oscillations. We study the impact of various beam oscillations and their parameters on the shape of the keyhole, the flow of heat and mass transfer processes and weld parameters to develop methodological recommendations. A numerical three-dimensional mathematical model of electron beam welding is presented. The model was developed on the basis of a heat conduction equation and a Navier-Stokes equation taking into account phase transitions at the interface of a solid and liquid phase and thermocapillary convection (Marangoni effect). The shape of the keyhole is determined based on experimental data on the parameters of the secondary signal by using the method of a synchronous accumulation. Calculations of thermal and hydrodynamic processes were carried out based on a computer cluster, using a simulation package COMSOL Multiphysics.