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.

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      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).

      Item Type: Thesis (Masters)
      Additional Information: Research Report (M.A.) - Faculty of Engineering, Universiti Malaya, 2022.
      Uncontrolled Keywords: Casting; WAAM; Thermal Analysis; Stress Analysis; Ansys
      Subjects: T Technology > TJ Mechanical engineering and machinery
      Divisions: Faculty of Engineering
      Depositing User: Mrs Rafidah Abu Othman
      Date Deposited: 23 Aug 2022 07:06
      Last Modified: 23 Aug 2022 07:07

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