Split Sleeve Vibration Damping Device for Elongated Members
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Elongated members experience vibration-induced lateral flexing, which can lead to fatigue and failure, especially when vibration frequencies match the natural resonating frequency, and existing vibration damping devices do not adequately address these issues across a wide range of frequencies.
Innovation Solution
A vibration damping device comprising a split sleeve and coiled springs that surround an elongated member, where the sleeve is bisected into segments that expand to absorb vibration energy, reducing lateral displacement and preventing excessive flexing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibration damping device is designed to reduce lateral flexing of an elongated member, then the member's resistance to vibration-induced fatigue improves, but the device complexity increases due to the need for multiple components and configurations
Solution Approach 1:
The sleeve is divided into multiple segments that can independently expand and contract in response to vibration frequencies. This segmentation allows the device to handle a broader range of vibration modes while maintaining a relatively simple overall structure, as each segment operates autonomously to dampen specific frequency ranges.
Solution Approach 2:
The device employs movable segments within the sleeve that can dynamically adjust their position and expansion in response to varying vibration frequencies. This dynamic capability enables the damping device to adapt to different operating conditions without requiring multiple fixed-configuration devices, thereby managing complexity while improving reliability across frequency ranges.
2Reliability
If the sleeve is bisected into multiple segments to expand and absorb vibration energy, then the damping effectiveness across frequency ranges improves, but the device complexity increases
Solution Approach 1:
The sleeve is divided into multiple segments that can independently expand and contract in response to vibration frequencies. This segmentation allows the device to handle a broader range of vibration modes while maintaining a relatively simple overall structure, as each segment operates autonomously to dampen specific frequency ranges.
Solution Approach 2:
The segmented sleeve structure nests multiple functional elements within a compact configuration, where segments are contained within the sleeve housing. This nesting approach maximizes the damping capability within a limited space, providing enhanced effectiveness without proportionally increasing the device's external dimensions or overall complexity.
3Strength
If coiled springs are used to bias the sleeve radially inward, then the ability to resist lateral displacement improves, but the device complexity and space requirements increase
Solution Approach 1:
The coiled springs are configured to resonate at specific frequencies that match common vibration modes of the elongated member. By tuning the spring characteristics (coil density, material, pre-compression), the device leverages resonant frequencies to enhance lateral resistance without requiring excessive spring force or complex spring arrangements, thereby maintaining strength while controlling complexity.
Solution Approach 2:
The spring parameters (coil diameter, wire diameter, number of coils, material properties) are optimized to provide the necessary lateral resistance with minimal complexity. By carefully selecting and adjusting these parameters, the device achieves effective lateral displacement resistance using a straightforward spring configuration rather than complex mechanical structures.
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 device effectively dampens vibrations across a range of frequencies, reducing the amplitude of lateral flexing and preventing member fatigue by using a split sleeve and coiled springs that bias radially inward to absorb and resist flexing forces.
Implementation Method 1
a first spring extending about the sleeve and configured to exert a force that biases the sleeve radially inward
Implementation Method 2
the sleeve is bisected longitudinally into separate first and second segments... when in a flexed state against the biasing force of the first spring
Data Source
AI summary
A vibration damping device is configured to reduce vibration that causes lateral flexing of an elongated member that extends along a centerline. The device includes a split sleeve co-extending with and disposed about the elongated member, and a spring that extends about the sleeve and exerts a force that biases the sleeve radially inward.