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, page 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 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2007 Guang Xu, All rights reserved.

Document Type

Dissertation - Citation

File Type

text

Language

English

Subject Headings

Gas metal arc welding -- Mathematical modelsPlasma arc welding -- Mathematical modelsThree-dimensional display systems

Thesis Number

T 9200

Print OCLC #

181103411

Recommended Citation

Xu, Guang, "Three-dimensional modeling of the plasma arc and metal transfer in arc welding" (2007). Doctoral Dissertations. 1739.
https://scholarsmine.mst.edu/doctoral_dissertations/1739