Doctoral Dissertations


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


Guang Xu


"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.


Tsai, Hai-Lung

Committee Member(s)

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


Mechanical and Aerospace Engineering

Degree Name

Ph. D. in Mechanical Engineering


United States. Army Research Office


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


xi, 141 pages

Note about bibliography

Includes bibliographical references.


© 2007 Guang Xu, All rights reserved.

Document Type

Dissertation - Citation

File Type




Subject Headings

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

Thesis Number

T 9200

Print OCLC #


Link to Catalog Record

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