Aluminum Alloy Laser - Compound Tig Welding Residual Stress And Deformation Of Numerical Analysis

Aluminum alloy is the widely used in the industry as an non-ferrous structuralmaterial. It has been widely applied in aviation, aerospace, automotive, machinerymanufacturing, shipbuilding and chemical industry. With the rapid development of thetechnology and the industrial economy, the demand for aluminum alloy weldedstructure is increasing. So the research in the welding of aluminum alloy is in deep.Laser-Arc Welding technology is the physical properties of two distinct mechanisms ofenergy transfer the heat source in one of the advanced welding technology. Laser-ArcWelding can compensate for the lack of separate laser welding, improve weldingforming. Welding numerical simulation in order to obtain a quantitative understandingof the process on a pilot basis, using a set of governing equations to describe one aspectof a welding process or a welding process using numerical methods.In this thesis, The5A06aluminum alloy plate with the Laser-TIG hybrid welding,laser welding and TIG welding each has process. To determine the hybrid weldingprocess parameters in the welding, as well as the process parameters on the effect ofwelding and complete the aluminum alloy laser-TIG hybrid welding. With the finiteelement analysis software ANSYS in numerical simulation of aluminum alloy laser-TIGhybrid welding: create a finite element model of the aluminum alloy plate, put forwardthe assumptions of the model, the mesh model, and compile the APDL command toestablish the laser-TIG hybrid welding heat source, calculation the temperaturedistribution and residual stress distribution in laser-TIG hybrid welding of aluminumalloy plate. Comparison of experimental data and the numerical analysis data, to putforward the summary and outlook.