Study on the effect of tool profiles on temperature distribution and material flow characteristics in friction stir welding

2012 ◽  
Vol 226 (9) ◽  
pp. 1527-1535 ◽  
Author(s):  
Hrushikesh Mohanty ◽  
Manas M Mahapatra ◽  
Pradeep Kumar ◽  
Pankaj Biswas ◽  
Nisith R Mandal
Keyword(s):  
Friction Stir Welding ◽  
Temperature Distribution ◽  
Material Flow ◽  
Flow Characteristics ◽  
Friction Stir ◽  
Tool Profiles

scholarly journals Numerical Studies on Temperature and Material Flow During Friction Stir Welding using Different Tool Pin Profiles

2021 ◽  
Vol 83 (1) ◽  
pp. 91-104
Author(s):  
M. D. Bindu ◽  
P. S. Tide ◽  
A. B. Bhasi
Keyword(s):  
Friction Stir Welding ◽  
Temperature Distribution ◽  
Material Flow ◽  
Three Dimensional ◽  
Friction Stir ◽  
Specific Strength ◽  
Numerical Studies ◽  
Computational Fluid Dynamics Cfd ◽  
Tool Pin ◽  
Metal Hardness

A three dimensional computational fluid dynamics (CFD) model has been developed to study the effect of tool pin profile on the material flow and temperature development in friction stir welding (FSW) of high specific strength AA 7068 alloy. Numerical simulations were carried out using a RNG k-e turbulence model. Three tool pin profiles, viz. cylindrical, conical and straight cylindrical threaded were considered for the simulation. The temperature distribution and material flow pattern obtained from the simulation were compared for different pin profiles. Simulation results predicted Temperature distribution and material maxing was better in straight cylindrical tapered thread pin welds. Weld joints were fabricated using the straight cylindrical threaded pin with the same parametric combinations as in the simulation. Peak temperature measured in the experiment was less than that obtained by simulation. Hardness measurements taken at different weld regions has showed that about 71% of that of the base metal hardness is obtained with the threaded tool pin. The microstructure study revealed a defect free weld joint. Precipitates distributed in the microstructure indicate sufficient heat input to join the material without dissolving precipitates. The developed numerical model is helpful in optimising FSW process parameters.

Finite Element Modelling of Temperature Distribution in Friction Stir Welding Process and Its Influence on Distortion of Copper Canisters

2004 ◽  
Vol 824 ◽  
Author(s):  
Therese Källgren ◽  
Lai-Zhe Jin ◽  
Rolf Sandström
Keyword(s):  
Finite Element ◽  
Friction Stir Welding ◽  
Temperature Distribution ◽  
Welding Speed ◽  
Material Flow ◽  
Finite Element Modelling ◽  
Welding Process ◽  
Element Modelling ◽  
Friction Stir ◽  
Friction Stir Welding Process

AbstractIn an effort to enhance safety for long time disposal of waste nuclear fuel, friction stir welding has been developed as one alternative to seal copper canisters. To avoid the formation of voids and cracks during the welding process, an understanding of the heat and material flow andthereby the evolution of the microstructure, is of great importance. Finite element modelling has been used to simulate the heat and material flow as well as thermal expansion during the friction stir welding process. A model involving heat transfer, material flow, and continuum mechanics has been developed. The steady state solutions have been compared with experimental temperature observations as well as analytical solutions, showing good agreement. Temperature distribution is affected by the welding speed. For a given reference pointperpendicular to the welding direction, a lower welding speed corresponds to a higher peak temperature. The plunging position of welding tool influences the temperature distribution and therefore the displacement distribution of the weldment.

On the Issues of Asymmetry Observed in Heat Transfer & Material Flow in Friction Stir Welding

2012 ◽  
Vol 622-623 ◽  
pp. 289-293
Author(s):  
Barnik Saha Roy ◽  
Arnab Samaddar Chaudhuri ◽  
Subhash Chandra Saha
Keyword(s):  
Friction Stir Welding ◽  
Temperature Distribution ◽  
Material Flow ◽  
Reasonable Agreement ◽  
Flow Analysis ◽  
Flow Temperature ◽  
3 Dimensional ◽  
Friction Stir ◽  
Dimensional Modeling ◽  
Tool Profile

In this paper, a standard CFD code, COMSOL is used to describe the 3-dimensional modeling of friction stir welding using threaded tool and based on fully sticking friction. A standard threaded tool profile is used for the full flow analysis including heat generation and heat flow. Temperature distribution is analyzed for full sticking and sliding condition. The effect of different operating parameters on the temperature distribution was performed.The importance of cell Peclet number is also investigated in the temperature distribution on advancing and retreading side. The results are in reasonable agreement with the predictions.

scholarly journals Numerical Simulation of Temperature Distribution and Material Flow During Friction Stir Welding 2017A Aluminum Alloys

2016 ◽  
Vol 80 ◽  
pp. 12002 ◽  
Author(s):  
Oussama Mimouni ◽  
Riad Badji ◽  
Mohamed Hadji ◽  
Afia Kouadr-Davidi ◽  
Hamel Rachid ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Friction Stir Welding ◽  
Temperature Distribution ◽  
Aluminum Alloys ◽  
Material Flow ◽  
Friction Stir
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