Modeling of GMA Weld Pools With Consideration of Droplet Impact
- 1 October 1998
- journal article
- Published by ASME International in Journal of Engineering Materials and Technology
- Vol. 120 (4), 313-320
- https://doi.org/10.1115/1.2807020
Abstract
A three-dimensional weld pool model has been developed to study the fluid flow and heat transfer process during gas metal arc (GMA) welding. Both droplet heat content and impact force were considered in analyzing the effect of droplets on the formation of weld pool. The fluid flow in the weld pool was induced by the presence of surface tension, electromagnetic and buoyancy force. The surface deformation of weld pool was calculated by considering arc pressure and droplet impact force. Computational results under partial and full penetration welding conditions were obtained. The effect of heat flow and fluid flow characteristics on weld pool geometry was discussed, particularly with respect to the presence of droplet heat input and impact force.Keywords
This publication has 17 references indexed in Scilit:
- Three-dimensional finite element modeling of gas metal-arc weldingMetallurgical and Materials Transactions B, 1994
- A Study on Heat and Mass flow in Stationary Gas Tungsten arc Welding using the Numerical Mapping MethodProceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 1989
- Three-dimensional transient model for arc welding processMetallurgical Transactions B, 1989
- The transient behavior of weldpools with a deformed free surfaceInternational Journal of Heat and Mass Transfer, 1989
- Computer simulation of convection in moving arc weld poolsMetallurgical Transactions A, 1986
- Distribution of the heat and current fluxes in gas tungsten arcsMetallurgical Transactions B, 1985
- Fluid flow and weld penetration in stationary arc weldsMetallurgical Transactions A, 1985
- A two-dimensional transient model for convection in laser melted poolMetallurgical Transactions A, 1984
- Heat- and fluid-flow phenomena in weld poolsJournal of Fluid Mechanics, 1984
- A mathematical model for fluid flow in a weld pool at high currentsJournal of Fluid Mechanics, 1980