Suspension Element With Cyclic Symmetric Plates
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Solution Overview
Problem
Current vibration isolation solutions for airborne equipment using elastomer dampers suffer from significant performance variations with temperature and vibration frequencies, anisotropy, and creep, leading to residual rotations and displacement issues.
Innovation Solution
A suspension element with metal interfaces and plates arranged for cyclic symmetry, allowing adjustable rigidity in three dimensions, combined with elastomer damping elements to ensure stable and linear rigidity, reducing performance variations and creep.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If elastomer dampers are used for vibration isolation, then vibration filtering is achieved, but rigidity varies significantly with temperature and vibration frequencies
Solution Approach 1:
The suspension element is divided into multiple independent plates (at least two) that connect the mechanical interfaces. Each plate can be independently designed with specific dimensions, thickness, and material properties, allowing the overall rigidity to be tuned while maintaining stable vibration isolation performance across different temperatures and frequencies.
Solution Approach 2:
The suspension element combines multiple plates made of materials with different mechanical properties. By selecting plates with varying rigidity characteristics, the composite structure achieves both stable overall rigidity and effective vibration filtering, overcoming the temperature and frequency sensitivity of single-material elastomer dampers.
2Object-affected harmful factors
If elastomer dampers are used for vibration isolation, then damping is provided, but anisotropy of rigidity occurs
Solution Approach 1:
The plates are arranged with cyclic symmetry around the central axis, creating a balanced structure where the asymmetric rigidity contributions of individual plates combine to produce isotropic overall behavior. This symmetric arrangement ensures equal rigidity in all radial directions while maintaining the damping capabilities of the plate structure.
Solution Approach 2:
Different plates can have different local properties (dimensions, thickness, material) to compensate for directional rigidity variations. By carefully designing the local characteristics of each plate and their spatial arrangement, the suspension element achieves uniform rigidity in all directions while providing effective vibration damping.
3Object-affected harmful factors
If elastomer dampers are used for vibration isolation, then vibration filtering is achieved, but creep occurs under thermal cycles and vibration
Solution Approach 1:
The suspension element is pre-assembled with precisely controlled plate dimensions and arrangements before installation. This preliminary configuration ensures that the structure achieves its designed rigidity and geometric stability from the outset, preventing creep and position drift under subsequent thermal cycles and vibration loads.
Solution Approach 2:
The plate structure is designed to dynamically respond to loads while maintaining stable geometry. The rigid plate framework provides a stable geometric skeleton that resists creep, while the plate connections and material properties provide the necessary flexibility for vibration filtering without compromising position stability.
4Stability of the object's composition
If rigidity is adjusted in three dimensions, then isotropic rigidity greater than 10% is achieved, but device complexity increases
Solution Approach 1:
The same plate structure serves multiple functions: it provides the suspension framework, enables rigidity adjustment in three dimensions through dimensional variations, achieves isotropic behavior through cyclic symmetric arrangement, and provides vibration filtering. This multi-functionality reduces the need for separate components and simplifies the overall design despite the sophisticated performance requirements.
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 improved rigidity isotropy and reduced displacement under varying conditions, maintaining consistent performance and minimizing residual rotations and creep, effectively filtering vibrations and managing impacts.
Implementation Method 1
at least one damping element which is positioned between two plates and/or between a plate and a mechanical interface, which enables the characteristics of stable and linear rigidity of a metal material to be associated with the damping characteristics of a material of the elastomer type
Data Source
AI summary
A suspension element for the mechanical connection of a load which is suspended in a support, having a rigidity. It comprises at least two mechanical interfaces with the load and with the support, respectively, and at least two plates which connect each of the two interfaces in a complete connection, the rigidity of the element being adjusted to specific values along three orthogonal axes in accordance with the number of plates, their distribution between the interfaces and their dimensions in terms of length, thickness and depth.