Modeling and Optimization of a Friction Stir Extrusion Process Using Finite Element Methods

Master's Thesis

Abstract

Friction stir extrusion (FSE) is a relatively new manufacturing process that allows for reduced cost production of metallic piping with a fine, equiaxed grain structure. While some research has been conducted into computational modeling of varying FSE techniques, little has been done in terms of creating models to predict process parameter requirements, such as extrusion force or mandrel torque. To that end, models of a sample FSE process for the extrusion of 6061 aluminum were created in the commercial finite element analysis software DEFORM. The models were validated by two means. First, simple die geometries were analyzed using upper and lower bound methods. The same geometry was simulated in DEFORM and the results compared. Second, the sample FSE process was modeled and compared to physical trials. Once the computational model was validated, various process variants were modeled to optimize the technique subject to machine constraints.

Attributes

Attribute NameValues
Author Tyler R. Jaramillo
Contributor Steven R. Schmid, Research Director
Contributor James Schmiedeler, Committee Member
Contributor Paul McGinn, Committee Member
Degree Level Master's Thesis
Degree Discipline Aerospace and Mechanical Engineering
Degree Name MSME
Defense Date
  • 2018-03-19

Submission Date 2018-04-09
Subject
  • Friction Stir Extrusion

Language
  • English

Record Visibility and Access Public
Content License
  • All rights reserved

Departments and Units

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