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Thermal Modeling Based on the Energy per Unit Length of Weld in Friction Stir Welding

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In this paper, the thermal model based on the energy per unit length of weld in friction stir welding is further developed to consider the effect of shoulder concave angle and pin taper angle. In order to accurately predict energy per unit length of weld, analytical expressions of frictional heat generation from concave shoulder and taper cylindrical pin are derived and compared to contributions by other authors. The formulae are then used to predict the maximum welding temperature for several aluminum alloys. Subsequently, a modified prediction-correction scheme of the friction coefficient on the basis of slip factor determined by energy per unit length of weld is developed and applied to the temperature simulation of quasi-steady welding stage in friction stir welding.
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Keywords: CONCAVE SHOULDER; FRICTION STIR WELDING; FRICTIONAL HEAT GENERATION; TEMPERATURE SIMULATION

Document Type: Research Article

Publication date: July 1, 2018

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  • Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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