Fourteen-Cornered Cellular Structure for Impact Energy Absorption
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Solution Overview
Problem
Conventional structural components with cellular structures, such as honeycomb designs, effectively absorb compressive energy but increase weight, making it challenging to achieve both high impact resistance and low mass per unit length while maintaining manufacturing feasibility.
Innovation Solution
A cellular structure with cells having a fourteen-cornered cross section, featuring fourteen sides and fourteen corners, which provides increased energy absorption and stable axial collapse while minimizing mass per unit length, by optimizing the internal angles and external angles of the cell structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional hexagonal cellular structures are used, then compressive energy absorption and crush stability are improved, but mass per unit length increases
Solution Approach 1:
The patent applies parameter changes by modifying the cellular structure from conventional hexagonal (6-sided) to十四角形 (14-sided) cross-sections. This geometric parameter change increases the number of corners from 6 to 14, which enhances compressive energy absorption through more folding modes and crush patterns, while the optimized cell geometry maintains mass efficiency comparable to or better than hexagonal structures.
2Strength
If cellular structures with more corners are used, then energy absorption and bend improvement are achieved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the structural component into multiple interconnected cells with十四角形 cross-sections. Each cell acts as an independent energy-absorbing unit with 14 corners that can fold and crush independently, allowing the overall structure to absorb energy through cumulative cell deformation while maintaining a modular, manageable complexity through repetitive unit patterns.
Solution Approach 2:
The patent employs composite cellular structures combining multiple geometric features within each cell -十四角形 cross-sections with specific internal angle configurations (10 internal angles and 4 external angles). This composite geometric design integrates multiple folding modes and crush patterns within a single cell type, achieving enhanced energy absorption without requiring multiple different cell geometries, thus controlling overall device complexity.
3Ease of manufacture
If basic polygonal cellular structures are used, then manufacturing feasibility is maintained, but strength increase is limited
Solution Approach 1:
The patent applies parameter changes by evolving from basic polygonal shapes (triangular, square, hexagonal) to十四角形 (14-sided) cellular cross-sections. This geometric parameter change increases the number of corners from 6 to 14, creating additional folding modes and crush patterns that enhance load-carrying capacity and energy absorption, while the extrusion-based manufacturing process remains compatible with the new geometry.
Solution Approach 2:
The patent applies dimensionality change by transitioning from simple 2D polygonal patterns to a more complex十四角形 geometry that utilizes both internal angle variations (10 internal angles vs. 4 external angles) and external angle configurations. This dimensional complexity in the cross-sectional geometry creates additional energy absorption mechanisms through varied folding modes, while the overall extrusion process maintains manufacturing feasibility.
Data Source
AI summary
A cellular structure may include a plurality of cells each cell of the plurality of cells having a fourteen-cornered cross section. The fourteen-cornered cross section may include fourteen sides and fourteen corners. Each cell may include a plurality of longitudinal walls extending between a top and a bottom of the cell, the longitudinal walls intersecting to create corners of the cell.