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Prediction of Temperature and Velocity Fields in Friction Stir Welding of 7xxx AA

Rezaei Farkoosh, Amir | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 39597 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Serajzadeh, Siamak
  7. Abstract:
  8. In this work a mathematical model has been developed to predict large deformation of work piece in friction stir welding process. Commercially finite element package; ABAQUS is used to solve the governing equations while an elasto-viscoplastic materials behavior is utilized in the model. The model is capable of considering the effects of process parameters such as welding speed and tool geometry on various aspects of the process including temperature and stress distribution within the work piece as well as tool, and velocity and strain fields with in the work piece. Experimental works have been carried out to assess the accuracy of the model and also to determine the effects of various process parameters on mechanical properties of weldments of AA7075. Predicted results have been compared with the experimental data and good agreement has been observed
  9. Keywords:
  10. Finite Element Method ; Mechanical Properties ; Aluminum Alloy 7075 ; Friction Stir Welding ; Temperature Field ; Velocity Field

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