Brake Disc Reinforcing Ring for Vibration Damping
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Solution Overview
Problem
Existing brake discs for vehicle disc brakes generate undesirable noise due to friction force fluctuations and vibrations, particularly high-frequency noise from radial and tangential vibration modes at the inner area of the friction ring.
Innovation Solution
Incorporating a reinforcing ring mounted in a force-fit manner on the brake disc, which modifies the natural frequencies and vibration modes by enhancing the damping properties between the brake disc pot and body, thereby reducing noise through increased rigidity and damping of excessive vibration amplitudes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a reinforcing ring is added to the brake disc, then noise is reduced and damping is improved, but device complexity increases
Solution Approach 1:
The brake disc is divided into functional segments: the base brake disc structure and the separate reinforcing ring. The reinforcing ring is mounted onto the brake disc pot in the connecting area, creating a modular solution that adds damping functionality without redesigning the entire brake disc structure. This segmentation allows the noise reduction feature to be added as a distinct component.
Solution Approach 2:
The reinforcing ring is made from a material with different damping properties than the base brake disc structure. By combining materials with complementary properties - the brake disc pot providing structural integrity and the reinforcing ring providing enhanced damping - the composite structure achieves superior noise reduction while maintaining the original brake disc functionality.
2Object-affected harmful factors
If the brake disc structure is modified to reduce noise, then damping properties improve, but manufacturing difficulty increases
Solution Approach 1:
The vibration damping solution is segmented into a separate reinforcing ring component that can be manufactured independently and then mounted onto the existing brake disc. This avoids the need to modify the base brake disc structure, maintaining ease of manufacture for the primary component while adding damping functionality through a separate, specialized part.
Solution Approach 2:
The reinforcing ring is pre-manufactured with the specific damping properties and geometry needed to reduce vibration. This preliminary preparation of the damping component allows for optimized vibration reduction without requiring complex modifications to the brake disc manufacturing process itself. The ring is designed and prepared in advance, then integrated into the existing structure.
3Object-affected harmful factors
If the reinforcing ring is mounted in a force-fit manner, then damping effectiveness increases, but assembly complexity increases
Solution Approach 1:
The force-fit mounting method is designed to create a pre-compression or interference fit between the reinforcing ring and the brake disc pot. This beforehand cushioning effect ensures that the reinforcing ring is firmly secured and maintains optimal contact pressure for vibration damping without requiring additional active control mechanisms or complex assembly procedures during operation.
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 reinforcing ring effectively reduces noise by altering the vibration modes and providing additional damping, creating a uniform outer surface and allowing for adaptation to various vehicle forms, while maintaining the original brake disc structure and being easily removable.
Implementation Method 1
Friction force fluctuations during a braking operation may result in audible, in particular high-frequency, noise due to vibrations of the brake disc. By means of the at least one reinforcing ring, the natural frequencies and vibration modes of the brake disc may be changed in such a way that the described noise may be reduced.
Implementation Method 2
The damping properties may be improved via the additional material of the at least one reinforcing ring in the connecting area between the brake disc pot and the brake disc body. The at least one reinforcing ring provides a higher damping at the brake disc, resulting in a reduction in the noise that occurs.
Data Source
AI summary
The present disclosure relates to a brake disc for a vehicle disc brake. The brake disc has a brake disc body, with a friction ring on which friction surfaces are formed, and a brake disc pot that is designed for fastening the brake disc to a vehicle axle. The brake disc pot is connected to the brake disc body in a connecting area via at least one connecting element, and at least one reinforcing ring in the connecting area is mounted on the brake disc in a force-fit manner.