Inflatable Joint Geometry for Underwater Rotational Stiffness
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Solution Overview
Problem
Existing methods for connecting inflatable apparatuses underwater lack sufficient rotational stiffness and stability while allowing for necessary movement, which is crucial for supporting communications conductors and sensors in dynamic environments.
Innovation Solution
The method involves forming joints between inflatable components with a polar second moment of area about an axis perpendicular to their centers, using heat-sealable or adhesive materials, and configuring the components to maintain rotational stiffness and flexibility by minimizing the perpendicular distance from the base to the seal edge, allowing for movement without breaking the connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing connection methods are used for inflatable apparatuses, then the connection can be formed, but the joint lacks sufficient rotational stiffness and stability
Solution Approach 1:
The connection system is divided into multiple functional elements: a first component with a first base, a second component with a second base, and seal edges that create distinct sealing zones. This segmentation allows the joint to have localized stiffness at the seal edges while maintaining overall flexibility through the base structures.
Solution Approach 2:
The invention introduces a dimensional constraint by minimizing the perpendicular distance from the bottom of each base to its respective seal edge. This creates a compact joint geometry that enhances rotational stiffness without restricting the necessary movement flexibility of the overall structure.
2Area of stationary object
If the perpendicular distance from base to seal edge is increased, then the connection area is increased, but the rotational stiffness decreases
Solution Approach 1:
The invention optimizes the geometric parameter of perpendicular distance from base to seal edge, keeping it minimal to maintain rotational stiffness. This parameter optimization ensures that the joint achieves maximum stiffness with minimum connection area, resolving the contradiction between area and stiffness.
3Reliability
If the joint is made more rigid to prevent breaking, then the rotational stiffness is improved, but the flexibility for movement is reduced
Solution Approach 1:
The joint structure implements local quality by concentrating stiffness at the seal edge regions where connection integrity is critical, while the base structures maintain flexibility for movement. The minimal perpendicular distance from base to seal edge ensures localized rigidity without compromising overall movement capability.
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 increased rotational stiffness and stability while allowing the joints to flex, ensuring reliable support for communications conductors and sensors in underwater environments without compromising the integrity of the connection.
Implementation Method 1
applying heat to the respective amorphous sealant layers of each respective base to form a joint
Data Source
AI summary
Inflatable apparatuses that may be used in underwater environments to support telecommunications conductors and/or associated sensors are configured and constructed using multiple components connected using innovative joints and related methods.