Conf-2010-SAE-Honeycomb Design Abstract
From Clemson Engineering Design Applications and Research
Berglind, L. , Ju, J. , Summers, J., (2010), “A Novel Design Method of Honeycomb Meta-Materials for a Flexible Non-Pneumatic Tire Component”, SAE World Congress and Exhibition, AC400-Tire and Wheel Technology, Detroit, MI, April 2010, No. 2010-01-0762.
Conventional geometric parameters of honeycombs (cell height, h, cell length, l, and cell angle, θ) have been used to find effective properties of honeycomb structures. However, these parameters appear to be difficult to control both a target shear stiffness (4 to 4.5MPa) and a certain level of shear strain (~10%) because the parameters are coupled to each other. A novel approach to design hexagonal honeycombs is suggested to be capable of controlling both shear stiffness and shear flexibility independently by defining two new parameters; effective height, R and horizontal separation, d. A numerical parametric study with commercial software, ABAQUS, is conducted using the two new parameters to investigate their affects on in-plane effective shear stiffness, G12*, and maximum shear strain, (γ12*)max of polycarbonate honeycombs under a fixed overall honeycomb height of 12.7mm (0.5in). The suggested approach is expected to be applied to design a light weight component requiring certain levels of shear stiffness and shear strain at the same time.