Characterisation of periodic variation in torque occurred in friction stir welding process

J. T. Xiong, X. C. Zhang, P. Li, J. W. Qian, J. L. Li, F. S. Zhang, H. B. Dong

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Friction stir welding was physically simulated to study torque variation by a rotational friction process under constant axial pressing speed. The results indicated that the torque accurately reproduce the same periodic characteristics as the friction stir welding torque, i.e. the torque cycle is equal to the time of one tool rotation. The periodic variation intensity of torque, which was obtained at a constant rotational speed ω and a constant axial pressing speed v, was characterised by non-dimensional amplitude of the torque C*. Moreover, a semianalytical model, which describes C* as a function of ω2/v in Arrhenius form, was established. In this model, C* exponentially increases with ω 2/v, and low ω 2/v suppresses the variation intensity of torque.

Original languageEnglish
Pages (from-to)350-354
Number of pages5
JournalScience and Technology of Welding and Joining
Volume19
Issue number4
DOIs
StatePublished - May 2014

Keywords

  • Friction stir welding
  • Periodic variation
  • Simulation device
  • Torque

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