Title :
Numerical simulation of temperature field of mag vertical welding without penetration
Author :
Yue Chen ; Jianmin Han ; Zhiyong Yang ; Zhenjiang Li ; Zhiqiang Li
Author_Institution :
Eng. Res. Center of Struct. Reliability & Oper. Meas. Technol. of Rail Guided Vehicles, Beijing Jiaotong Univ., Beijing, China
Abstract :
In this paper, temperature field of MAG vertical butt welding was simulated and analyzed by use of SYSWELD code. The grid model of the butt weld without penetration was established with the gap considered. A new combined heat source function-double ellipsoid + Gaussian cylindrical was established to simulate the welding process accurately and the junction model programme is built with FORTRAN. The influence of the simulation parameters such as heat efficiency, heat partition coefficient, and thermal emission coefficient on the temperature field distribution was studied. The simulated molten pool shape and temperature cycling curve at the tested point were matched with the experimental results.
Keywords :
Gaussian processes; arc welding; heat transfer; welds; FORTRAN; Gaussian cylindrical; MAG vertical welding; SYSWELD code; butt weld; double ellipsoid; grid model; heat efficiency; heat partition coefficient; heat source function; molten pool shape; numerical simulation; temperature cycling curve; temperature field distribution; thermal emission coefficient; welding process simulation; MAG vertical welding; Numerical Simulation; combined heat source mode; temperature field;
Conference_Titel :
Advanced Technology of Design and Manufacture (ATDM 2010), International Conference on
Conference_Location :
Beijing
DOI :
10.1049/cp.2010.1257
