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Lakshamanaswamy, N.
- Experimentally Validated Numerical Simulation of Heat Transfer Behavior of Dissimilar AA5052-AA6061 Plates in Fiction STIR Welding
Abstract Views :273 |
PDF Views:4
Authors
Affiliations
1 Dept of Mechanical Engineering UVCE, BUB , Bangalore, IN
2 Dept of Mechanical Engineering UVCE, BUB, Bangalore, IN
1 Dept of Mechanical Engineering UVCE, BUB , Bangalore, IN
2 Dept of Mechanical Engineering UVCE, BUB, Bangalore, IN
Source
Indian Welding Journal, Vol 51, No 4 (2018), Pagination: 66-74Abstract
Fiction Stir Welding is a unique type of metal joining process in solid state, where the heat generation takes place due to the friction between the rotating tool and work piece. It is generally used to join all series of Aluminum alloys with good strength and also some metallic alloys that finds difficult in welding through regular fusion welding techniques. The metal joining takes place in the solid state as the metal to be welded reaches about 80% to 90% of its melting temperature. The joining of metals in friction stir welding does not require any filler metals all classes of Aluminium alloys can be joined and in some desirable cases dissimilar metal compositions and Aluminium metals composites can be joined satisfactorily. Joining of dissimilar metals has become a trend in the industries like aerospace, automotive chemical etc. as it eliminates the materials which are costlier where ever not required. In the present study an experimental investigations are made to study the heat transfer behavior by determining the temperature distribution in AA5052-AA6061 plates during the Friction Stir welding. A three dimensional transient analysis is made by using ANSYS finite element analysis software. Thermocouples are placed at the suitable locations and the same point the temperature readings were taken from the simulation results. The experimental data is compared with the numerically simulated results. The numerical simulations results obtained agree the experimental data obtained.Keywords
Dissimilar Metals, Aluminum Alloy Series, Friction STIR Welding, FSW, Heat Source Model, Transient Analysis.
References
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- Computational Investigation of Heat Transfer and Mass Flow in GTA Welding of AA6061 Plates
Abstract Views :231 |
PDF Views:5
Authors
Affiliations
1 Dept. of Mechanical Engineering UVCE, BUB, Bangalore, IN
1 Dept. of Mechanical Engineering UVCE, BUB, Bangalore, IN
Source
Indian Welding Journal, Vol 54, No 2 (2021), Pagination: 55-66Abstract
Computational approach or numerical simulation is a trend in recent manufacturing technology, in the present study a computational approach is made for a pulse type GTAW to analyze the heat transfer and mass flow behavior using FEA software ANSYS 19.0. Transient thermal simulations are carried at three different heat inputs in the form of voltage and currents with the welding speed of 70mm/min. The heat source profiles are obtained with the different heat inputs from experimental investigations. The same heat source profiles are modeled using the Solid EDGE software and called in the ICEM CFD to generate grids with unstructured tetrahedral mesh and grids are also made for the workpiece by modelling for a dimension of 150mm × 100mm having 6mm thickness same as the experimental workpiece. The generated Finite element model is called in ANSYS Workbench for transient thermal simulations to obtain the temperature distributions and the heat source models are also called in ANSYS Fluent for velocity field. The heat source models selected and the temperature field obtained from the computational numerical simulations are in good agreement with the experimental results indicating validation of the simulation process made.Keywords
Gas Tungsten Arc Welding, Hemispherical Heat Source Model, Heat Transfer, Fluid Flow, Modeling, Temperature Field.References
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