Layered Flywheel Structure for Torque Transfer and Noise Damping
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Solution Overview
Problem
Existing flywheel production methods fail to effectively reduce noise and vibration while transferring torque, often resulting in increased stiffness and adhesion issues with viscoelastic materials, which complicates the production process and does not adequately address noise reduction.
Innovation Solution
A method involving the connection of at least two plate layers with different materials and thicknesses to form a disc-shaped structural unit, where a thicker, softer steel plate absorbs torque and a thinner, harder steel plate provides noise damping and flexibility, eliminating the need for viscoelastic layers and allowing for variable load adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a viscoelastic insulating layer is used in the sandwich component, then noise damping is improved, but adhesion occurs in tools and production complexity increases
Solution Approach 1:
The patent removes the viscoelastic insulating layer from the sandwich component, extracting the problematic element that caused adhesion issues while maintaining the core function through an alternative design approach using two metallic plate elements with different material properties
Solution Approach 2:
The patent uses a composite structure of two metallic plate elements with different material properties (different strengths and thicknesses) to achieve noise damping without viscoelastic materials, combining the benefits of metallic durability with vibration absorption
2Object-affected harmful factors
If a viscoelastic insulating layer is used in the sandwich component, then noise damping is improved, but manufacturing time increases due to cleaning requirements
Solution Approach 1:
The patent eliminates the viscoelastic insulating layer that required cleaning operations, extracting the source of production delays and adhesion problems while achieving noise damping through the metallic plate composite structure
Solution Approach 2:
The patent adopts a design that eliminates the need for expensive cleaning operations and tool maintenance, using a straightforward metallic composite structure that can be manufactured without special cleaning protocols
3Object-affected harmful factors
If the sandwich component is made with a viscoelastic layer, then noise reduction is intended, but torque transfer capability is lost
Solution Approach 1:
The patent creates a composite structure of two metallic plate elements with different material properties that can simultaneously transfer torque effectively while providing noise damping, replacing the inadequate viscoelastic layer with a superior metallic composite
Solution Approach 2:
The patent changes the material parameters by using two metallic plates with different strengths and thicknesses, optimizing the combination to achieve both torque transfer capability and noise reduction that a single viscoelastic layer cannot provide
4Force
If a single thick plate is used for the flywheel, then torque absorption is improved, but noise and vibration insulation is reduced
Solution Approach 1:
The patent divides the single thick plate into two separate metallic plate elements with different properties, segmenting the structure to enable both torque absorption and noise insulation functions that a monolithic plate cannot achieve
Solution Approach 2:
The patent uses a composite of two metallic plate elements with different material properties, combining the torque absorption capability of thicker metal with the noise insulation benefits of the layered composite structure
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 approach results in flywheels with enhanced vibration and noise insulation, reduced axial stiffness, lower weight, and improved torque transmission, minimizing noise disturbances and reducing the load on adjacent components, while simplifying the production process and reducing costs.
Implementation Method 1
at least a first metallic plate element provided for the flywheel to at least a second, parallel plate layer by a joining process so that they lie on one another to form a disc-shaped structural unit
Data Source
AI summary
A method for producing a flywheel includes producing a damping plate part by permanently connecting at least a first metallic plate element provided for the flywheel to at least one further material layer to form a sandwich component. According to the method, the first plate element is connected by a joining process to at least a second, parallel plate layer, so that they lie on one another to form a disc-shaped structural unit. According to the method, at least two sheet metal layers from different materials and/or at least two sheet metal layers having different material strengths are connected with each other. This enables a large variance for the production of flywheels. In this way, it is possible, for example, to produce a flywheel having a plurality of superimposed plates adapted to the respective load situation in a defined flexibility.