Design of Cellular Shear Bands of a Non-Pneumatic Tire -Investigation of Contact Pressure

Paper #:
  • 2010-01-0768

Published:
  • 2010-04-12
Citation:
Ju, J., Ananthasayanam, B., Summers, J., and Joseph, P., "Design of Cellular Shear Bands of a Non-Pneumatic Tire -Investigation of Contact Pressure," SAE Int. J. Passeng. Cars – Mech. Syst. 3(1):598-606, 2010, https://doi.org/10.4271/2010-01-0768.
Pages:
9
Abstract:
In an effort to build a shear band of a lunar rover wheel which operates at lunar surface temperatures (40 to 400K), the design of a metallic cellular shear band is suggested. Six representative honeycombs with aluminum alloy (7075-T6) are tailored to have a shear modulus of 6.5MPa which is a shear modulus of an elastomer by changing cell wall thickness, cell angles, cell heights and cell lengths at meso-scale. The designed cellular solids are used for a ring typed shear band of a wheel structure at macro-scale. A structural performance such as contact pressure at the outer layer of the wheel is investigated with the honeycomb shear bands when a vertical force is applied at the center of the wheel. Cellular Materials Theory (CMT) is used to obtain in-plane effective properties of a honeycomb structure at meso-scale. Finite Element Analysis (FEA) with commercial software ABAQUS is employed to investigate the structural behavior of a wheel at macro-scale. A honeycomb shear band designed with a higher negative cell angle provides a lower contact pressure along the contact patch associated with an in-plane shear flexible property.
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