Chained Panel Fluid Bladder Base for Ship Vibration Isolation
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Solution Overview
Problem
Existing vibration reduction and isolation systems for ships face limitations in integrating wide frequency band, low cost, and high performance, with issues related to structural mass, strength, machining difficulty, and economic cost.
Innovation Solution
An efficient vibration reduction and isolation base supported by a chained panel fluid bladder, featuring a bottom plate, vibration reduction fluid bladder, and vertical limiting devices, which converts longitudinal vibration waves into surface waves in the fluid domain, dissipating energy and reducing structural vibrations through impedance mismatch and waveform conversion principles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional base structures are used for vibration reduction, then structural strength is maintained, but vibration reduction effect is insufficient
Solution Approach 1:
The base structure is divided into multiple chained panels connected by hinge devices, creating a segmented flexible structure that can adapt to vibrations while maintaining overall structural integrity. Each panel segment can move independently to absorb vibration energy.
Solution Approach 2:
Fluid bladders are integrated within the chained panel structure to provide vibration isolation through fluid pressure and compression. The fluid-filled chambers act as cushions that absorb and dampen vibration forces transmitted through the base.
2Reliability
If high-performance vibration isolators are used, then vibration reduction performance is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple functions into a single integrated base structure: the chained panels provide structural support, the hinge devices enable flexibility, and the fluid bladders deliver vibration isolation. This merging of functions reduces the need for separate vibration isolation components.
Solution Approach 2:
The base structure incorporates dynamic elements including flexible hinge connections between panels and compressible fluid bladders that can adapt their stiffness and damping characteristics in response to varying vibration conditions, providing high-performance isolation without complex active control systems.
3Reliability
If airbag structures are used for vibration isolation, then vibration reduction is achieved, but structural strength is compromised
Solution Approach 1:
The fluid bladders are strategically positioned within specific regions of the chained panel structure where vibration isolation is most needed, while the hinge devices and panel connections maintain structural strength in load-bearing areas. This localized application optimizes both isolation performance and structural integrity.
Solution Approach 2:
The base structure combines rigid panel materials with flexible fluid-filled bladder elements to create a composite system that exhibits both strength and vibration isolation properties. The combination of solid structural components and fluid damping elements provides superior performance compared to either material alone.
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 solution provides a simple, reliable, and cost-effective vibration reduction system that effectively attenuates mechanical device vibrations, reducing noise and structural impacts on ships, with adjustable size and low machining complexity.
Implementation Method 1
converts longitudinal vibration waves into surface waves in the fluid domain
Implementation Method 2
dissipating energy and reducing structural vibrations through impedance mismatch and waveform conversion principles
Data Source
AI summary
The present disclosure provides an efficient vibration reduction and isolation base supported by a chained panel fluid bladder, including a chained panel, the vibration reduction fluid bladder, vertical limiting devices and a bottom plate. The chained panel is a discontinuous structure formed by connecting chained substructure panels in series by panel hinge devices. The vibration reduction fluid bladder and the vertical limiting devices are fixedly installed between the chained panel and the bottom plate. The chained panel is constructed based on the impedance mismatch principle and provided with a mechanical device. Mechanical vibration energy is dissipated twice by the chained panel and the vibration reduction fluid bladder, thereby greatly reducing influences of mechanical device operation on a hull structure. The present disclosure abandons a traditional base design of a continuous panel, is simple in structure and good in vibration reduction performance, and has good economy and wide application prospects.