High-Damping Absorbent Coating With Dissipater Mesh
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Solution Overview
Problem
Existing damping systems, such as elastomer plates and visco-stressed elastomer systems, are insufficient in dissipating large amounts of vibratory energy, limiting their effectiveness in reducing dynamic deformation of structures subjected to high levels of vibration.
Innovation Solution
An absorbent covering with a dissipater mesh made from a single block of deformable material, featuring nodes and dissipater elements that amplify energy dissipation through a lever arm effect and geometrical stress sharing, secured to a structure via self-adhesive nodes, and optionally including a visco-stressed configuration with a rigid backing plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a one-piece elastomer plate is used for damping, then the structure is simple and easy to manufacture, but the damping effectiveness is insufficient because small movements in the elastomer result in small energy dissipation
Solution Approach 1:
The elastomer plate is segmented into multiple layers with dissipater elements embedded between them. This segmentation allows each layer to contribute to energy dissipation independently, multiplying the overall damping effect while maintaining a relatively simple overall structure that can be manufactured in a standardized manner.
Solution Approach 2:
The invention creates a composite damping structure by combining multiple elastomer layers with dissipater elements (such as viscoelastic layers, metallic dampers, or porous materials) embedded between them. This composite approach enables the system to dissipate significantly more vibratory energy than a homogeneous elastomer plate, as each component contributes different damping mechanisms.
2Loss of energy
If a visco-stressed elastomer with metal support is used, then the damping effectiveness is improved through internal stresses, but the structure becomes more complex and heavier
Solution Approach 1:
Instead of using a heavy metal support across the entire structure, the invention applies dissipater elements only in specific locations where they are most effective for energy dissipation. This localized approach maintains high damping effectiveness while minimizing the additional weight compared to a full metal support system.
Solution Approach 2:
The invention may employ porous dissipater materials that provide high surface area for energy dissipation relative to their weight. These porous structures can dissipate vibratory energy through friction and deformation of the porous network, achieving effective damping with significantly less mass than solid metal supports.
3Loss of energy
If the absorbent layer is spaced apart from the structure via emerging nodes, then the lever arm effect amplifies energy dissipation, but the mounting complexity increases
Solution Approach 1:
The invention combines the mounting function and the dissipater function into a single integrated structure. The nodes that emerge from the elastomer layers serve dual purposes: they provide the lever arm effect for amplifying energy dissipation and simultaneously serve as the mounting attachment points. This merging eliminates the need for separate mounting hardware and simplifies the installation process.
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 absorbent covering achieves significant energy dissipation and reduced dynamic deformation, enhancing the durability of structures and reducing noise, while being lightweight and easily mountable on various surfaces.
Implementation Method 1
an absorbent layer of elastic material, in particular of elastomer
Implementation Method 2
the dissipater elements are stressed, which has the effect of changing their shapes
Implementation Method 3
the bottom face of the bottom end of each node, i.e. the face that comes into contact with the structure, is preferably covered in a self-adhesive
Data Source
AI summary
The present invention relates to an absorbent covering having high damping power, the covering being secured to a structure (20) and being provided with an absorbent layer (10) of elastic material (4). Remarkably, said absorbent layer (10) comprises a dissipater mesh arranged in the elastic material (4) and constituted by a plurality of nodes (2) and of dissipater elements (1), which dissipater elements are advantageously elliptical in shape.