TITLE

TEMPERATURE BASED VALIDATION OF THE ANALYTICAL MODEL FOR THE ESTIMATION OF THE AMOUNT OF HEAT GENERATED DURING FRICTION STIR WELDING

AUTHOR(S)
MILČIĆ, Dragan S.; MIJAJLOVIĆ, Miroslav M.; PAVLOVIĆ, Nenad T.; VUKIĆ, Mića V.; MANČIĆ, Dragan D.
PUB. DATE
December 2012
SOURCE
Thermal Science;2012, Vol. 16 Issue Supp 2, pS337
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Friction stir welding is a solid-state welding technique that utilizes thermo-mechanical influence of the rotating welding tool on parent material resulting in a monolith joint - weld. On the contact of welding tool and parent material, significant stirring and deformation of parent material appears, and during this process, mechanical energy is partially transformed into heat. Generated heat affects the temperature of the welding tool and parent material, thus the proposed analytical model for the estimation of the amount of generated heat can be verified by temperature: analytically determined heat is used for numerical estimation of the temperature of parent material and this temperature is compared to the experimentally determined temperature. Numerical solution is estimated using the finite difference method - explicit scheme with adaptive grid, considering influence of temperature on material's conductivity, contact conditions between welding tool and parent material, material flow around welding tool, etc. The analytical model shows that 60-100% of mechanical power given to the welding tool is transformed into heat, while the comparison of results shows the maximal relative difference between the analytical and experimental temperature of about 10%.
ACCESSION #
87613663

 

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