The Effect of Deflection of a Golf Club Shaft During Down Swing.

Fuminobu, Sato; Ashida, Hiroki; Naruo, Takeshi

doi:10.1299/kikaic.65.572

Cited by 2 publications

(1 citation statement)

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“…Whittaker [3] investigated to what extent the performance of a golf club can be a ected by the mass distribution in the club head. There also have been some studies of the e ect of shaft de ection [4] and using a swing robot [5]. Despite all this work, research into the detailed design of the club head, for instance, the thickness distribution of the head is still scarce and design of the club head still depends greatly on the experience of designers.…”

Section: Introductionmentioning

confidence: 99%

A study of thickness optimization of golf club heads to maximize release velocity of balls

Nakai

Sogabe

et al. 2004

Commun. Numer. Meth. Engng.

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SUMMARYIn the present study, the shape optimization of a golf club head is investigated. The problem of maximizing the release velocity of the ball after impact is treated under the constraint of a speciÿed weight of club head. The thickness distribution of the clubface is chosen as the design variable for optimization. The basis vector method, which is an approximating method for optimization problems in which the sensitivity cannot be derived analytically, is employed. The basis vector represents a fundamental change of shape, and it is preferable to obtaining e ective results that the basis vectors be mutually independent. A simple approach to create the basis vectors using eigenmodes is also presented. The theory of impedance matching is conÿrmed numerically by a two-dimensional example. A three-dimensional example is given to show that this approach is e ective for optimal design of the golf club head.

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Section: Introductionmentioning

confidence: 99%

A study of thickness optimization of golf club heads to maximize release velocity of balls

Nakai

Sogabe

et al. 2004

Commun. Numer. Meth. Engng.

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The Application of Structurally Unsymmetric Laminated Construction for CFRP Golf Club Shaft

Onuki¹,

Yamaguchi²,

Miki³

et al. 2011

Trans.JSME, Ser.A

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Composite pipes with structurally unsymmetric laminated construction show coupled deformations of bending and torsion. That is, those pipes are bended as well as twisted when a bending moment applied. The golf club shaft is subjected to the moment caused by the centrifugal force acting on the club head during golf swing because the center of gravity of a club head doesn't be located on the axis of a shaft. In this study, the possibility to adjust the face angle just before the impact utilizing the structurally unsymmetric laminated golf club shaft, is investigated. By using the designed laminating method called 1.5 turn lapping, a shaft having practical stiffness and strength as a normal golf club shaft, and also having coupled deformations, is manufactured. Through robot and human tests with a golf club assembled with the designed shaft, it is confirmed that the face angle can be changed comparing with the normal shaft and the slice or the hook also can be rectified pertinently.

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The Effect of Deflection of a Golf Club Shaft During Down Swing.

Cited by 2 publications

References 0 publications

A study of thickness optimization of golf club heads to maximize release velocity of balls

A study of thickness optimization of golf club heads to maximize release velocity of balls

The Application of Structurally Unsymmetric Laminated Construction for CFRP Golf Club Shaft

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