Theses and Dissertations

William Furr

Issuing Body

Mississippi State University

Advisor

Priddy, Matthew W.

Committee Member

Bian, Linkan

Committee Member

Doude, Haley R.

Date of Degree

12-13-2019

Original embargo terms

Worldwide

Document Type

Graduate Thesis - Open Access

Major

Mechanical Engineering

Degree Name

Master of Science

College

James Worth Bagley College of Engineering

Department

Department of Mechanical Engineering

Abstract

Additive manufacturing has shown the ability to produce highly complex geometries that are not easily manufactured through traditional means. However, the implications of building these complex geometries regarding thermal history requires more attention. AM process simulations have proven to be computationally expensive and require large amounts of pre-processing to execute. This thesis will start with a review of additive manufacturing along with current modeling efforts. Then, the development of a pre-processing tool for finite element simulations of these processes is presented. It is shown that the pre-processing tool significantly decreases the total time-to-simulation by removing manual steps. Finally, a study using this tool is conducted to analyze the thermal histories of a cube and a cylinder with two different scan strategies and explore differences in resulting thermal history. It is shown that less temperature fluctuations and a lower final temperature result from an offset scan strategy and a cylindrical geometry.

URI

https://hdl.handle.net/11668/16471

Sponsorship

Army Research Laboratory Cooperative Agreement Number W911NF-12-R-0011-03.

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