Flywheel Pendulum Absorber Stop Element for Noise Damping
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Solution Overview
Problem
Current centrifugal pendulum absorbers for flywheels are difficult to mount reliably and cost-efficiently, and they often produce disturbing noise during operation.
Innovation Solution
A centrifugal pendulum absorber with a plurality of pendulum weights arranged circumferentially around a center axis, featuring at least one stopping element made of a copper alloy, such as brass or bronze, positioned to define the end point of the pendulum path and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional stopping elements are used in centrifugal pendulum absorbers, then the device structure is simple, but disturbing noise is generated during operation
Solution Approach 1:
The patent changes the material parameter of the stopping element from conventional materials to copper alloy, which fundamentally alters the noise characteristics while maintaining the same structural function. This material parameter change reduces disturbing noise during operation.
Solution Approach 2:
The patent specifies using copper alloy (such as brass or bronze) for the stopping element, which is a composite material solution that combines the benefits of copper's noise-dampening properties with the structural requirements of the stopping element.
2Duration of action of stationary object
If conventional materials are used for stopping elements, then manufacturing costs are low, but service life is reduced
Solution Approach 1:
The patent changes the material composition parameter of the stopping element to copper alloy, which inherently provides better wear resistance and longer service life compared to conventional materials, justifying the increased manufacturing cost.
3Reliability
If simple mounting structures are used, then assembly is easy and cost-efficient, but mounting reliability is insufficient
Solution Approach 1:
The patent changes the material parameter of the stopping element to copper alloy, which provides better mechanical properties and bonding characteristics, thereby improving mounting reliability without significantly increasing structural complexity.
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 more reliable centrifugal pendulum absorber that significantly reduces unwanted noise and increases the service life, thereby improving performance and reducing costs.
Implementation Method 1
The copper alloy has shown to provide beneficial dampening properties which reduce the noise when the pendulum weight contacts the stopping element.
Data Source
AI summary
The disclosure relates to a centrifugal pendulum absorber for a flywheel, including,a plurality of pendulum weights being arranged circumferentially around a center axis (C) of the centrifugal pendulum absorber, each pendulum weight being configured to be movable along a predetermined pendulum path during use, wherein,the centrifugal pendulum absorber further including at least one stopping element for at least one of the pendulum weights which is positioned such that it defines an end point of the predetermined pendulum path, at which end point the at least one of the pendulum weights is configured to come into contact with the at least one stopping element, wherein at least a portion of the at least one stopping element which is intended to contact the at least one pendulum weight includes a copper alloy, such as brass and/or bronze.