Honeycomb Structure Hexagon Cell Orientation
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Solution Overview
Problem
Honeycomb structures with non-circular circumferential shapes face issues of dimensional deformation and insufficient isostatic strength during manufacturing, particularly in large sizes.
Innovation Solution
A honeycomb structure with hexagonal cells configured such that the longest diagonal line and short diameter form an angle of 0 to 6 degrees, providing a chamfered rectangular, trapezoidal, or triangular shape at the cross section, which suppresses dimensional deformation and enhances isostatic strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a honeycomb structure has a non-circular circumferential shape (e.g., ellipse, rectangle, triangle) at the cross section, then it can achieve various shapes and upsizing, but dimensional deformation occurs during manufacturing and isostatic strength becomes insufficient
Solution Approach 1:
The patent applies asymmetry by configuring the hexagon cells with a specific angular orientation (0 to 6 degrees between the longest diagonal line and short diameter) rather than symmetric alignment. This asymmetric configuration compensates for the inherent asymmetry of non-circular circumferential shapes, balancing the structural stress distribution and preventing dimensional deformation during manufacturing while maintaining the desired variant circumferential shape.
2Adaptability or versatility
If a honeycomb structure has a non-circular circumferential shape, then it can achieve various shapes and upsizing, but isostatic strength becomes insufficient
Solution Approach 1:
The asymmetric angular configuration of hexagon cells (0 to 6 degrees orientation) creates an optimized stress distribution pattern that enhances isostatic strength. This specific orientation aligns the cell structure to better resist the isotropic pressure applied during manufacturing and service, compensating for the reduced strength typically associated with non-circular shapes.
3Ease of manufacture
If hexagon cells are misaligned with the circumferential shape, then manufacturing is easier, but dimensional accuracy deteriorates and structural integrity is compromised
Solution Approach 1:
The patent specifies a precise angular parameter range (0 to 6 degrees) for the orientation of hexagon cells relative to the short diameter of the circumferential shape. By controlling this angular parameter within a narrow range, the invention achieves optimal balance between manufacturing ease and dimensional accuracy, ensuring that cells are properly aligned to maintain structural integrity while allowing for practical manufacturing processes.
Data Source
AI summary
A honeycomb structure includes a honeycomb body having a partition wall defining a plurality of cells that extend from an inflow-end face as one end face to an outflow-end face as the other end face, the honeycomb body having a circumferential shape at a cross section orthogonal to an extending direction of the cells that is a rectangular shape with four corners being chamfered and having a long diameter and a short diameter, wherein the plurality of cells are hexagon cells having a hexagonal shape at the cross section orthogonal to the extending direction of the cells, and the hexagon cells are configured so that a longest diagonal line of each hexagon cell and the short diameter S of the honeycomb body form an angle that is 0 to 6°.