Finite element modelling of wire-arc-additive-manufacturing process (WAAM) / Shihao Sun

Shihao , Sun (2022) Finite element modelling of wire-arc-additive-manufacturing process (WAAM) / Shihao Sun. Masters thesis, Universiti Malaya.

	Image (JPEG) (The Candidate’s Agreement) Restricted to Repository staff only Download (650Kb)
Preview	PDF (Thesis M.A) Download (3177Kb) | Preview

Abstract

There are many advantages to using Wire-Arc-Additive-Manufacturing technology, including lower costs, shorter construction cycles, and freedom from workpiece size constraints. This paper chooses to use a numerical simulation technique to study the additive manufacturing of stainless steel 316 material based on ANSYS WORKBENCH. In this study, the Gaussian heat source and Goldak double ellipsoid heat source models are analyzed in detail. Using 3D finite element meshing technology, the workpiece is meshed, and the mesh self-adaptive technology is used to automatically refine and generate meshes for the weld metal, which creates conditions for shortening the numerical simulation time of the welding process. The results show that the higher the welding power and initial temperature, the higher the temperature of the temperature field, the higher the welding speed, the lower the average temperature. The higher the welding power and speed, the higher the tension; the lower the stress, the higher the starting temperature. At the end of the study, the group 6 has been selected as the optimized group (300 w, 0.4 mm/s, 300 °C).

Actions (For repository staff only : Login required)