Artificial Shuttlecock Stem Stress Distribution via Segmented Connecting Assembly
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Solution Overview
Problem
Conventional artificial shuttlecocks with carbon fiber stems suffer from reduced durability due to stress concentration at the junction with the base portion, leading to breakage under strong external forces, which limits their overall durability and acceptance by users.
Innovation Solution
The design incorporates a base portion with a concave portion to reduce stress concentration and a connecting assembly of three elements (first, second, and third connecting elements) to securely fix the stems, enhancing the durability by distributing forces and preventing breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If carbon fiber material is used for the stem to increase strength and durability, then the stem strength is improved, but stress concentration occurs at the junction with the base portion leading to breakage
Solution Approach 1:
The connecting assembly is divided into three separate connecting elements positioned at different locations along the stem. This segmentation distributes the stress and fixing points, preventing stress concentration at a single junction between the stem and base portion, thereby resolving the contradiction between stem strength and overall durability.
Solution Approach 2:
The three connecting elements are positioned at specific locations along the stem (first connecting element near the base portion, second connecting element near the feathers, and third connecting element between them). This local differentiation optimizes the distribution of mechanical stresses at different critical points, allowing the stem to maintain strength while improving reliability by preventing breakage at any single point.
2Device complexity
If conventional two-element connecting assembly is used, then the structure is simple, but the shuttlecock breaks easily under strong external forces
Solution Approach 1:
The connecting assembly is segmented into three distinct connecting elements instead of two, creating additional support points along the stem. This segmentation enhances durability by distributing mechanical loads more effectively, while maintaining relatively simple individual element structures that are easy to manufacture.
Solution Approach 2:
The connecting assembly combines multiple connecting elements made of different materials (wire, adhesive, or both) to create a composite fixing system. This composite approach improves reliability by using materials with complementary properties, while the overall structure remains straightforward and manufacturable.
Data Source
AI summary
The present Disclosure discloses an artificial shuttlecock, which includes a base portion, a plurality of stems, a plurality of feathers, a first connecting element, a second connecting element and at least one third connecting element. The base portion includes a concave portion. One end of the stem connects to the base portion, and the feather connects to the other end of the stem. The first connecting element connects to the stems, and is close to the base portion. The second connecting element connects to the stems, and is close to the feathers. The third connecting element connects to the stems, and is located between the first connecting element and the second connecting element.