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Analysis for the forces in FSW for aluminum alloy considering tool geometry and process velocities

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Abstract

In the friction stir welding (FSW) technique, the friction stir tool is submitted to a system of forces that influences the main phenomena of the process. However, experimental studies for all the forces in FSW have received little attention. For a better process understanding, an analysis of the individual contribution of each part of the tool on the forces is required. In this paper, the influence of the pin and shoulder on the axial force is separately considered as a function of the rotational, plunging and welding speeds. Three experimental designs were carried out for the tool pin, the tool shoulder and the complete tool. Additionally, the welding and transverse forces are measured during FSW experiments for different combinations of the main process parameters. The results showed an important contribution of the pin to avoid excessive loads during the plunging phase and an interaction between the effects of the tool geometry, and rotational and plunging speeds factors on the maximum axial force.

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Authors and Affiliations

  1. Department of Mechanical Engineering, COPPE, Universidade Federal do Rio de Janeiro, Cidade Universitária, Ilha do Fundão, Centro de Tecnologia, Bloco G, Sala 204, P.O. Box 68503, Rio de Janeiro, RJ, CEP 21941-972, Brazil

    Karen J. Quintana

  2. Department of Mechanical Engineering, COPPE and Polytechnic School, Cidade Universitária, Ilha do Fundão, Centro de Tecnologia, Bloco G, Sala 204, P.O. Box 68503, Rio de Janeiro, RJ, CEP 21941-972, Brazil

    Jose Luis L. Silveira

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  1. Karen J. Quintana
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Correspondence to Jose Luis L. Silveira.

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Technical Editor: Márcio Bacci da Silva.

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Quintana, K.J., Silveira, J.L.L. Analysis for the forces in FSW for aluminum alloy considering tool geometry and process velocities. J Braz. Soc. Mech. Sci. Eng. 40, 229 (2018). https://doi.org/10.1007/s40430-018-1162-0

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  • DOI: https://doi.org/10.1007/s40430-018-1162-0

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