Role of welding parameters in determining the geometrical appearance of weld pool
Article Abstract:
A three-dimensional numerical model was developed to represent the fluid flow and heat transfer in weld pools. Both full penetration and free deformation of the top and bottom weld pool surfaces were taken into account. Findings indicated that welding current can substantially affect the geometrical shape. The curvature of the pool boundary at the trailing end is directly proportional to the welding current. Welding speed had very little impact on the geometrical shape but it had a significant effect on the pool size.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1996
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Modeling welding by surface heating
Article Abstract:
The phases involved in the welding of two materials are studied using a mathematical model. The model is based on the boundary problem's governing equations and is included in a computer program having three subprograms, namely: temperature, solid and fluid. To evaluate its reliability, it is employed in the numerical analysis of a welding process involving various materials. Results show that this new mathematical model performs better than its counterparts in the effective simulation of the actual welding process.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1992
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On the solid-fluid transition zone in welding analysis
Article Abstract:
The solid-fluid transition zone that occurs during the melting and solidifying of binary alloys is studied. Several sets ofequations are used to account for solid-fluid mixture's fundamental parameters,such as true density, average density, volume fraction and average velocity. A finite element program is then employed to solve the stress and temperature fields for both the solid and liquid phases. The results show fair agreement with experimental data.
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1993
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