Archery Bow Stabilizer With Suspended Mass Damping
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Solution Overview
Problem
Archery bow stabilizers face a compromise between weight and stabilization performance, with existing designs providing limited vibration damping across the entire frequency range and requiring additional mass for effective stabilization.
Innovation Solution
The use of a suspended mass damper system comprising a body member, resilient members, and weights arranged around a central shaft, where the weights are supported by elastomeric couplings, allowing for adjustable positioning and vibration damping through deformation of the resilient members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a stabilizer adds mass to improve stabilization, then stabilization performance is improved, but the weight of the bow increases
Solution Approach 1:
The stabilizer employs a dynamic vibration damping system with resilient members that allow controlled movement and deformation. The suspended mass can move relative to the body member through deformation of resilient members, creating a dynamic response to vibrations rather than a static mass addition, thereby improving stabilization without proportionally increasing effective weight.
Solution Approach 2:
The stabilizer utilizes resilient members made of elastomeric materials whose mechanical properties (viscoelasticity, damping characteristics) are optimized to provide vibration damping. By changing the material parameters and structural configuration of the resilient members, the stabilizer achieves effective vibration control with reduced mass compared to traditional solid stabilizers.
2Object-generated harmful factors
If a stabilizer uses an elastomeric portion to damp vibrations, then vibration damping is improved, but the effective damping range is limited to a narrow frequency range
Solution Approach 1:
The stabilizer divides the vibration damping function into multiple independent elements: multiple resilient members with different characteristics, and potentially multiple suspended masses. Each resilient member can be tuned to different frequency ranges, and their combined effect provides broad-spectrum vibration damping across the entire frequency range present in archery bows.
Solution Approach 2:
The stabilizer employs composite construction combining rigid components (body member, suspended mass) with viscoelastic materials (resilient members). This composite structure allows the resilient members to dissipate vibration energy through material damping while the rigid components provide structural support and mass for inertial damping, achieving effective damping across multiple frequency ranges.
3Object-generated harmful factors
If multiple resilient members are used to support the suspended mass, then vibration damping across broader frequency range is improved, but the device complexity increases
Solution Approach 1:
The stabilizer integrates multiple resilient members and suspended masses into a unified assembly that functions as a single vibration damping system. The resilient members are positioned to work together, and the suspended mass is strategically located to maximize damping effectiveness. This merging of components achieves broad frequency range damping while maintaining a compact, manageable 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
This configuration provides enhanced stabilization and vibration damping while maintaining a relatively low weight, allowing for improved performance across a broader frequency range and customizable mass distribution.
Implementation Method 1
A resilient member is supported by the body member and the suspended mass is supported by the resilient member. Deformation of the resilient member allows the suspended mass to move with respect to the body member.
Implementation Method 2
stabilizers that provide vibration damping typically provide effective damping across a limited frequency range
Data Source
AI summary
A bow stabilizer that reduces bow shock transmitted to archer's hand includes a plurality of weights disposed about a central shaft. An elastomeric material supports the weights and couples the weights to the central shaft. The central shaft is connected to the frame of the bow. Bow vibration is damped as the central shaft vibrates out of phase with the suspended weights.