Split Inner Ring Bearing With Section-Specific Materials
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Solution Overview
Problem
In ball bearing assemblies for gas turbine engines, the uneven stresses and loads on split inner ring sections often require over-engineering of one section or the use of different materials for each section, making it challenging to optimize material choice for both.
Innovation Solution
The use of a proximal inner ring made from a first material and a distal inner ring made from a second material, differing from the first, allows for independent material selection based on specific stress and load requirements, optimizing the bearing assembly's performance without over-engineering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the same material is used for both inner ring sections, then manufacturing simplicity is maintained, but the section under higher stress must be over-engineered, increasing overall material usage and cost
Solution Approach 1:
The patent applies local quality by using different materials for different sections of the inner ring based on their specific stress conditions. The first inner ring section uses a material optimized for high stress areas, while the second section uses a different material appropriate for lower stress conditions, thereby avoiding over-engineering and reducing overall material usage.
Solution Approach 2:
The inner ring is segmented into two separate sections that can be manufactured independently with different materials. This segmentation allows each section to be optimized for its specific loading conditions while maintaining manufacturing simplicity through standardized production processes for each segment.
2Reliability
If different materials are used for each inner ring section, then material optimization for specific stress conditions is achieved, but manufacturing complexity increases
Solution Approach 1:
The inner ring is divided into separable sections that can be manufactured independently using different materials optimized for their specific stress conditions. This segmentation enables material optimization while managing manufacturing complexity through modular production and assembly.
Data Source
AI summary
An inner ring assembly for a ball bearing assembly includes a proximal inner ring made from a first material. The inner ring assembly further includes a distal inner ring made from a second material. The first material is different from the second material.