Doctoral Dissertations

Title

Three-dimensional modeling of the plasma arc and metal transfer in arc welding

Alternative Title

Three dimensional modeling of the plasma arc and metal transfer in arc welding

Author

Guang Xu

Abstract

"Most previous three-dimensional modeling work on arc welding focused on the weld pool dynamics. Almost all these weld pool models were based on the two-dimensional axisymmetric Gaussian assumptions of arc pressure, plasma heat flux, and/or current density. They may not represent the real situation when the metal droplet presents...This dissertation presented a newly developed three-dimensional model for the plasma arc. It is more computationally efficient as compared with an existing model. The mathematic formulation includes both Navier-Stokes equations and Maxwell's equations. Through solving these governing equations, it is possible to predict the velocity, pressure, temperature, electric potential, current density, and magnetic field of the plasma arc"--Abstract, leaf iv.

Advisor(s)

Tsai, Hai-Lung

Committee Member(s)

Le, Vy Khoi
Alofs, Darryl J.
Wang, Pei-Chung
Chandrashekhara, K.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

Ph. D. in Mechanical Engineering

Sponsor(s)

United States. Army Research Office

Publisher

University of Missouri--Rolla

Publication Date

Spring 2007

Journal article titles appearing in thesis/dissertation

  • Three-dimensional modeling of the plasma arc in arc welding
  • Three-dimensional modeling of the plasma arc and model verification in gas tungsten arc welding
  • Three-dimensional modeling the metal transfer and interacted plasma arc in gas metal arc welding

Pagination

xi, 141 leaves

Note about bibliography

Includes bibliographical references.

Rights

© 2007 Guang Xu, All rights reserved.

Document Type

Dissertation - Citation

File Type

text

Language

English

Library of Congress Subject Headings

Gas metal arc welding -- Mathematical models
Plasma arc welding -- Mathematical models
Three-dimensional display systems

Thesis Number

T 9200

Print OCLC #

181103411

Link to Catalog Record

Full-text not available: Request this publication directly from Missouri S&T Library or contact your local library.

http://laurel.lso.missouri.edu/record=b6128711~S5

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