Optimization of Thickness Distribution of a Golf Club Face

Wu, Zhiqiang; Nakai, Kenta; Sogabe, Yuji; Arimitsu, Yutaka

doi:10.1299/kikaic.70.2870

Cited by 2 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To these problems, the authors have proposed an approach using basis vector method for the optimization of clubface. [Nakai et al (2004); Wu et al (2004)]. In this study, we try to extend the optimization of thickness distribution to the entire clubhead.…”

Section: Optimization Methods and Formulationmentioning

confidence: 99%

“…Twelve basis vectors are used in this example to express the thickness distribution. Five of them are generated with sensitivity functions of eigenvalues by proposed method, and others are generated by a former method [Nakai et al (2004); Wu et al (2004)]. Besides these vectors, one additional vector is created to express the change of the loft angle, and two additional vectors are created to express the changes of lumped masses set at the back of the clubhead.…”

Section: Basis Vectors For Thickness Distributionmentioning

confidence: 99%

“…However, much research concerning the optimization of a golf club was limited to the parametric optimization with few design variables, such as loft angle, bulge angle, and concentrated mass; the total design of the clubhead including shape or thickness distribution of the head was scarce since the sensitivity is difficult to be derived analytically in impact problems, and then the sensitivity-based approaches cannot be applied. As an attempt to avoid this difficulty, the authors have proposed an approach using basis vector method for the thickness optimization to maximize the initial velocity and the flying distance of a golf ball [Nakai et al (2004); Wu et al (2004)]. In these studies, the optimization of thickness distribution was limited to the clubface part.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Golf Clubhead Optimization Based on Contribution of Eigenmodes

Sogabe

Arimitsu

2019

Int. J. Comput. Methods

Self Cite

View full text Add to dashboard Cite

This study is aimed to optimize a golf clubhead for the purposes of maximizing the driving distance. Since the sensitivity-based approaches cannot be applied in impact problem, the authors developed an optimization system by using basis vector method. The relation between the eigenfrequencies and the coefficient of restitution is examined with finite element method (FEM) models numerically at first. Based on evaluating the contribution of eigenmodes, the authors proposed an approach to create the basis vectors using the sensitivity functions of eigenvalues. Computational results are presented for demonstrating the effectiveness of the proposed approach.

show abstract

Section: Optimization Methods and Formulationmentioning

confidence: 99%

Section: Basis Vectors For Thickness Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Golf Clubhead Optimization Based on Contribution of Eigenmodes

Sogabe

Arimitsu

2019

Int. J. Comput. Methods

Self Cite

View full text Add to dashboard Cite

show abstract

“…One of the authors has also proposed another approach to solve the solution of i  using Lagrange multiplier method. [8] Using the weight coefficient i  , the shape is modified as Equation 2 for one cycle. The shape is modified until the object function is convergent.…”

Section: A Formulation Of Optimization Problemmentioning

confidence: 99%

A Study on Developing Percussion Instrument with Tobe Pottery

Wu¹,

Arimitsu²,

Sogabe³

et al. 2016

IJSMM

Self Cite

View full text Add to dashboard Cite

Abstract-The present study is aimed to develop percussion instruments such as wind bell, hand bell, etc. with Tobe pottery which is a traditional product of Ehime prefecture in Japan. Not only the fundamental natural frequency corresponding to the desired music scale is designed, but also the higher order natural frequencies are considered in order to obtain a pleasant sound color. The material properties and vibration characteristics of the Tobe pottery are investigated by impact test and spectral analysis at first. And then, using the finite element method software, the shape of each musical scale model is estimated by changing the sizes of the Tobe pottery numerically. Since the second natural vibration is a major factor influencing the tone color, two approaches are used to change the tone color: (1) optimizing the shape of the pottery so that the second natural frequency changes to an objective frequency under a specified fundamental natural frequency, and (2) optimizing the shape of the pottery so that the contribution ratio of the second vibration changes under a specified fundamental natural frequency. Both approaches are developed with the basis vector method which is a technique of shape optimization. Finally, because of the shrinkage of material after firing, the initial shape of the pottery before the firing is also estimated. Numerical examples are given to show the effectiveness of the proposed approach.

show abstract

Optimization of Thickness Distribution of a Golf Club Face

Cited by 2 publications

References 0 publications

Golf Clubhead Optimization Based on Contribution of Eigenmodes

Golf Clubhead Optimization Based on Contribution of Eigenmodes

A Study on Developing Percussion Instrument with Tobe Pottery

Contact Info

Product

Resources

About