Golf Club Head Striking Wall Thickness Ratio
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Solution Overview
Problem
Conventional golf club heads with non-uniform striking walls fail to adequately mitigate high stress regions, which can lead to failure during impact, despite enhancing performance by varying thicknesses.
Innovation Solution
A golf club head design featuring a striking wall with a minimum and maximum thickness ratio of at least 1.70, where the maximum thickness is no greater than 4.6 mm and the minimum thickness is no greater than 2.5 mm, with a gradual thickness taper from the face center to the perimeter, minimizing stress concentrations and maximizing the region of high Coefficient of Restitution (COR).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the striking wall thickness is reduced at selected locations to increase COR and discretionary mass, then club performance is enhanced, but high stress regions are generated that may lead to failure
Solution Approach 1:
The striking wall is designed with non-uniform thickness distribution, where the thickness varies at different locations on the striking face. This allows the club head to have thinner walls at certain areas to increase COR and discretionary mass, while maintaining sufficient thickness at other areas to resist stress and prevent failure.
Solution Approach 2:
The thickness parameter of the striking wall is changed across different locations rather than maintaining a uniform thickness. By varying the thickness parameter spatially, the design optimizes the balance between achieving high COR values and maintaining structural integrity to withstand impact stresses.
2Quantity of substance
If the striking wall thickness is varied non-uniformly to increase discretionary mass, then more mass can be positioned optimally, but stress concentrations occur that may lead to failure
Solution Approach 1:
The striking wall thickness is locally optimized at different positions. By making the wall thinner at selected locations, discretionary mass is increased and can be redistributed to other areas of the club head where it provides greater benefit, such as improving moment of inertia or positioning mass for optimal performance.
Solution Approach 2:
The striking wall is effectively segmented into regions of different thicknesses. This segmentation allows independent optimization of different areas - some regions have reduced thickness to increase COR and discretionary mass, while other regions maintain sufficient thickness to handle stress loads.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively manages stress distribution and enhances the COR across the striking face, improving golf ball flight distances while maintaining structural integrity and conforming to regulatory standards.
Implementation Method 1
the use of metal hollow-type golf club heads enables increased COR of the striking wall as a result of a greater ability to configure the striking wall to deflect during impact with a golf ball
Data Source
AI summary
A wood-type golf club head includes a main body and a striking wall associated with the main body. The striking wall has a striking face including a face center, a first imaginary plane tangent to the face center, and a rear surface opposite the striking face. In a second imaginary plane perpendicular to the first imaginary plane and passing through the face center, the striking face includes a first point associated with a maximum thickness, tmax, of the striking wall, and a second point associated with a minimum thickness, tmin, of the striking wall, such that a ratio, tmax/tmin, is no less than 1.70. Also, in the second imaginary plane, the striking wall gradually tapers in thickness entirely from the first point to the second point.