Multi-Material Iron Golf Club Head Stress Reduction
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Solution Overview
Problem
Golf club heads experience high peak stress during impact with a golf ball, leading to potential damage and reduced performance.
Innovation Solution
Incorporating stress reducing features (SRFs) on the crown and sole of the golf club head, which are strategically designed to distribute the impact force and reduce peak stress on the face.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the face of the golf club head is made thinner to improve ball contact and coefficient of restitution, then the coefficient of restitution is improved, but the peak stress on the face increases leading to potential damage
Solution Approach 1:
The patent applies local quality by creating a multi-material construction where the face is made of a different material (or material configuration) than the rest of the club head. The face portion is designed with specific local properties (thinner, different material composition) to optimize COR, while the body provides structural support to manage stress, thus resolving the contradiction between improving COR and managing peak stress.
2Strength
If stress reducing features are added to the crown and sole to distribute impact force, then peak stress on the face is reduced, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the club head into distinct material regions or structural zones, including stress-reducing features in the crown and sole. These features are segmented areas with different material properties or structural characteristics that specifically target stress distribution, allowing the complex stress management function to be achieved through modular design elements rather than a completely complex overall structure.
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 SRFs effectively reduce peak stress on the face by increasing deflection, allowing for a thinner face design while maintaining durability and improving the coefficient of restitution (COR).
Implementation Method 1
selectively increasing deflection of the face
Data Source
AI summary
A multi-material iron-type golf club head having a shell that defines a closed internal volume, where the head is composed of at least two different materials and achieves a high maximum characteristic time.