Three-dimensional transient model for arc-welding process

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Metallurgical Transactions, B (Process Metallurgy); (United States)

DOI:https://doi.org/10.1007/BF02655921· OSTI ID:7069563

Zacharia, T; David, S A ^[1]; Eraslan, A H ^[2]; Aidun, D K ^[3]

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1. Oak Ridge National Lab., TN (United States)
2. AHE Associates, Tullahoma, TN (United States)
3. Clarkson Univ., Potsdam, NY (United States)

A direct computer-simulation technique, discrete-element analysis (DEA), was utilized in the development of a transient multidimensional (2-D and 3-D) mathematical model for investigating coupled conduction and convection heat-transfer problems associated with stationary and moving arc-welding processes. The mathematical formulation considers buoyancy, electromagnetic, and surface-tension driving forces in the solution of the overall heat-transfer conditions in the specimen. Furthermore, the formulation of the model allows realistic consideration of the geometrical variations in the workpiece. The model treats the weld-pool surface as a truly deformable free surface, allowing for the prediction of the weld-surface deformations such as the weld crown. A marked-element formulation was employed to monitor the transient development of the weld pool as determined by the latent heat considerations and the calculated velocities in the weld pool.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7069563
• Journal Information: Metallurgical Transactions, B (Process Metallurgy); (United States), Journal Name: Metallurgical Transactions, B (Process Metallurgy); (United States) Vol. 20B; ISSN 0360-2141; ISSN MTTBC
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
ARC WELDING
COMPUTERIZED SIMULATION
ENERGY TRANSFER
FABRICATION
HEAT TRANSFER
JOINING
MATHEMATICAL MODELS
SHAPE
SIMULATION
THREE-DIMENSIONAL CALCULATIONS
WELDING