Implications of Rigid Gripping Constraints on Clubhead Dynamics in Steel Golf Shafts

Tom W. Corke, Nils F Betzler, E.S. Wallace, Martin Strangwood, Steve Otto

Research output: Contribution to journalArticle

Abstract

Research and equipment testing with golf robots offers much greater control and manipulation of experimental variables compared to tests using human golfers. However, whilst it is acknowledged that the club gripping mechanism of a robot is dissimilar to that of a human, there appears to be no scientific findings on the effects of these gripping differences on the clubhead at ball impact. Theoretical and experimental strain propagation rates from the clubhead to the grip and back to the clubhead were determined during robot testing with a 9-iron to determine if this time interval was sufficiently short to permit the gripping mechanism to have an effect on the clubhead during impact. Longitudinal strain appears to propagate the most quickly, but such deflections are likely to be small and therefore of little meaningful consequence. Shaft bending was not a primary concern as modes of large enough amplitude appear to propagate too slowly to be relevant. Torsional strain propagates at a rate which suggests that constraints at the grip end of a golf club could potentially influence impact dynamics for steel shafted irons; however, this effect seems unlikely to be significant, a likelihood that decreases further for longer irons. As such, it is considered reasonable to treat the influence of a robot’s gripping mechanism on clubhead dynamics at impact as negligible, and therefore comparisons between robot and human data in this regard are valid.
LanguageEnglish
JournalApplied Sciences
Volume8
Issue number3
DOIs
Publication statusPublished - 12 Mar 2018

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Robots
Steel
Iron
Equipment testing
Testing

Keywords

  • strain propagation
  • torsion
  • golf
  • shaft
  • clubhead
  • robot
  • cannon

Cite this

Corke, Tom W. ; Betzler, Nils F ; Wallace, E.S. ; Strangwood, Martin ; Otto, Steve. / Implications of Rigid Gripping Constraints on Clubhead Dynamics in Steel Golf Shafts. In: Applied Sciences. 2018 ; Vol. 8, No. 3.
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abstract = "Research and equipment testing with golf robots offers much greater control and manipulation of experimental variables compared to tests using human golfers. However, whilst it is acknowledged that the club gripping mechanism of a robot is dissimilar to that of a human, there appears to be no scientific findings on the effects of these gripping differences on the clubhead at ball impact. Theoretical and experimental strain propagation rates from the clubhead to the grip and back to the clubhead were determined during robot testing with a 9-iron to determine if this time interval was sufficiently short to permit the gripping mechanism to have an effect on the clubhead during impact. Longitudinal strain appears to propagate the most quickly, but such deflections are likely to be small and therefore of little meaningful consequence. Shaft bending was not a primary concern as modes of large enough amplitude appear to propagate too slowly to be relevant. Torsional strain propagates at a rate which suggests that constraints at the grip end of a golf club could potentially influence impact dynamics for steel shafted irons; however, this effect seems unlikely to be significant, a likelihood that decreases further for longer irons. As such, it is considered reasonable to treat the influence of a robot’s gripping mechanism on clubhead dynamics at impact as negligible, and therefore comparisons between robot and human data in this regard are valid.",
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Implications of Rigid Gripping Constraints on Clubhead Dynamics in Steel Golf Shafts. / Corke, Tom W.; Betzler, Nils F; Wallace, E.S.; Strangwood, Martin ; Otto, Steve.

In: Applied Sciences, Vol. 8, No. 3, 12.03.2018.

Research output: Contribution to journalArticle

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