Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Mechanics and Mechanical Engineering

1 2016

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Comparision of Experimental and Simulated Weld Bead Geometry by Varying the Weld Speed in TIG Welded AA7075 Aluminium Alloy

Bosco Jude S., Jinu G. R., Arul Franco P.

Mechanics and Mechanical Engineering

2016

Vol. 20, nr 4

377--392

In this present study, Aluminium Alloy material (AA7075) is selected as the investigation material in which TIG welding process was utilized for welding and the temperature analysis was carried out. The same was simulated using ANSYS software by finite element technique considering the characteristics and advantage of TIG welding process than other sources for welding of aluminium alloys. A travel heat source combined with body loads was designed by analyzing thermal physical parameters, latent heat of fusion of material. The weld model was created by using Solid modeling and direct generation technique. Residual control method was taken for precise node selection. The simulation was carried out by varying the welding speed process parameter of TIG welding and keeping current & voltage as constant. The quasisteady state temperature field of TIG welding was simulated with the FEA software (ANSYS) as well as experimental tests. The main objective of this work is to compare the experimentally obtained weld bead geometry parameters such as bead width and depth of penetration of AA7075 welded joint with simulated results from ANSYS software for various weld speeds. From the results it is indentified that for the sample welded at 120 mm/min is having higher weld bead geometry when compared to the samples welded at 130 mm/min and 140 mm/min. The lower bead geometry is obtained for the sample welded at 140 mm/min is due to the application of less heat energy as input. Similarly for 130 mm/min lower bead geometry is obtained because less heat energy is spent on joining. Joining of two metals or alloys is important in every aspect of engineering which leads to welding in an effective manner and carrying out the analysis. The experimental analysis shows that the model is showing good agreement with the experimental results. Comparison of the experimental and simulated results shows the maximum deviation of 6.24 % and 6.28 % is obtained for calculating the bead width and depth of penetration, respectively. Keywords: TIG welding, AA7075, Simulation, Weld Bead Geometry, ANSYS.