The Simulation Of Welding Temperature Field Of Pipoline Based On ANSYS

Welding is a complicated physicochemical process which involves in electromagnetism, heat transferring, metal melting and freezing, phase-change welding stress and deformation and so on. In order to get high quality welding structure, these factors have to be controlled. If welding process can be simulated with computer, the best design, procedure method and optimum welding parameter can be obtained.Based on summing up other's experience, employing numerical calculation method, this paper researcher systemically discusses the finite element analytical system of the welding process by realizing the 3D dynamic simulation of welding temperature field, and then uses the research result to simulate the weld process of board surfacing and make groove multilayer weld by ANSYS. At the same time, the calculation result accords with traditional analysis result and theory result.The main contents of the paper are as following:1) Solving the no-liner question of parameters of material, this is the function of the temperature.2) Utilization birth and die technique of element in ANSYS, simulating groove multilayer weld process and computing the welding temperature field.3) Choose the function of Gauss as heat source model use the function command to apply load of moving heat source. A mathematic model of transient thermal process in welding is established to simulate the moving of the heat source. The through real-time dynamic simulation of the stress produced in welding process.4) Utilization thermocouple actual measurement weld temperature field of X80.5) Summing up is applicable to the hand arc welding solders below the temperature term of room together with the functional relation against the string energy of T_8/5.In this paper, a.feasible dynamic simulation method on 3D welding temperature field which provides theory foundation and instruction on optimizing the welding technology and parameters.