Method of designing golf club and golf club head

Abstract

A method for designing a golf club head by using a computer. A golf club head model in which the rear surface of a face part is provided with reinforcing ribs and a golf ball model to be analyzed by using a finite element method (FEM) are prepared. Conditions including the positions of the reinforcing ribs and the configurations thereof including the sectional areas and heights are adjusted to set the maximum value of the Mises stresses generated by the collision between the golf ball model and the golf club head model at any off-center positions of said front surface of said face part thereof to less than 1.3 times the maximum value of the Mises stress generated by the collision between the golf ball model and the golf club head model at the center of said front surface of said face part thereof.

Description

[0001] This nonprovisional application claims priority under 35 U.S.C. §119(a) on Patent Application No(s). 2005-202727 filed in Japan on Jul. 12, 2005, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a method of designing a golf club head by utilizing a computer. The present invention also relates to a golf club head. More particularly, the present invention relates to a method of efficiently designing a golf club head having a sufficient strength and excellent restitution characteristics. To do so, a golf ball model and a golf club head model both composed of a plurality of finite elements are used. Further reinforcing ribs are formed on the rear surface of the face part of the golf club head model. By changing conditions of the reinforcing ribs, ball-hitting simulation is executed to make stresses generated at any hitting positions of the face part uniform. [0004...

AI Technical Summary

Benefits of technology

[0060] As described above, according to the method of the present invention for designing the golf club head carried out by using the golf club head model and the golf ball model, simulation is executed in an imaginary space by using a computer to set the maximum value of the Mises stresses generated by the collision between the golf ball model and the golf club head model at any off-center positions of the front surface of the face part thereof to less than 1.3 times the maximum value of the Mises stress generated by the collision between the golf ball model and the golf club head model at the center of the front surface of the face part thereof. To do so, the positions of the reinforcing ribs and the configurations thereof including the sectional areas and the heights are changed. That is, the designing method of the present invention allows the golf club head to be designed very easily without performing steps of making actual golf club heads on an

Problems solved by technology

However, thinning the face part causes the strength of the wood head to be low.

Because all the reinforcing ribs extend vertically in the golf club head disclosed in the patent document 1, the reinforcing ribs disposed at the toe and the heel make the rigidity of the face part excessively high.

Thus at the time of collision between a golf ball and the face part, the face part is excessively restrained from

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