Composite Anti-Vibration Support for High-Frequency Motor Vibrations
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Solution Overview
Problem
Existing anti-vibration supports for vehicles, particularly those supporting electric motors or hybrid engine blocks, struggle to effectively filter high-frequency vibrations without adding significant weight through swing masses.
Innovation Solution
An anti-vibration support comprising a composite assembly with an elastic material and a damping material, where the damping material is strategically overmolded to minimize its mass, ensuring effective filtering of high-frequency vibrations by eliminating or reducing natural modes in the 200-3000 Hz range without relying on elastomer bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If elastomer bodies are used to ensure both elasticity and damping, then vibration filtering is improved, but weight increases due to the need for swing masses
Solution Approach 1:
The invention divides the vibration control function into two separate components: an elastic body for elasticity and a damping body for damping. This segmentation allows each component to be optimized independently, eliminating the need for heavy swing masses while achieving effective vibration filtering in the 200-3000 Hz range.
Solution Approach 2:
The invention uses a composite structure combining an elastic body made of elastomeric material with a damping body made of viscoelastic material. This composite approach allows the system to achieve both elasticity and damping properties without requiring additional heavy components, thus reducing overall weight while improving vibration filtering.
2Object-affected harmful factors
If swing masses are added to elastomer bodies for vibration filtering, then high-frequency vibration filtering is improved, but device complexity and weight increase
Solution Approach 1:
The invention extracts the damping function from the traditional elastomer body design and implements it through a separate damping body with specific viscoelastic properties. This eliminates the need for complex swing mass mechanisms while achieving effective high-frequency vibration filtering through the inherent damping characteristics of the viscoelastic material.
Solution Approach 2:
The invention changes the material parameters by using viscoelastic material with specific damping characteristics tailored for high-frequency vibration control. By selecting materials with appropriate loss factors and damping properties, the system achieves effective vibration filtering without requiring additional mechanical complexity or swing masses.
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 achieves effective filtering of high-frequency vibrations while significantly reducing weight by minimizing the use of damping material, maintaining static stiffness through elastic materials, and reducing natural modes in the 200-3000 Hz range.
Implementation Method 1
said elastic material which determines a static stiffness of the suspension
Implementation Method 2
said damping material which is suitable for damping the natural modes potentially excited by said vibratory movements
Implementation Method 3
The damping material may have a damping factor (delta tangent) greater than 10% in a temperature range of -30°C to 90°C and in a frequency range of said vibratory movements of 200 Hz to 3000 Hz
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
Anti-vibration support (1) comprising a first frame (2), a second frame (3), a suspension (4) connecting the first frame to the second frame, the suspension being a composite assembly comprising a non-damping or weakly damping elastic material (6) combined with a damping material (7). The elastic material determines a static stiffness of the suspension.