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Flexible cellular solid spokes of a non-pneumatic tire

Two dimensional prismatic cellular materials of periodic microstructures are called honeycombs.Hexagonal honeycombs are cellular materials employed in various applications, and particulary in the design of light weight structures. estigations conducted by engineers on the effective moduli and effective Poisson’s ratios of hexagonal honeycombs based on the bending dominant structural property, of cell walls some more refined models have also been suggested. Recently, in-plane effective moduli, yield strengths, and buckling strengths with different cell types – square, hexagonal, triangle, mixed squares and triangles, and diamond – have been investigated .Triangular, Kagome, and diamond cell honeycombs are known to be extension dominant cell structures, which are good for high modulus structural designs. On the other hand, square and hexagonal cell honeycombs are known to be bending dominant structures, which are good for flexible structural designs.  Moreover, hexagonal honeycombs can easily be tailored to have targeted in-plane properties by changing the cell angle, the cell wall thickness, and the cell length. Therefore, some hexagonal structures have the potential for compliant structural design. The NPT spokes design can be sought for through the huge design space afforded by cellular materials base materials and cellular geometries.


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honeycombs


Information Source: https://www.sciencedirect.com/science/article/pii/S0263822311004909#f0005