Numerical Study on the Elastic Properties of Perforated Hollow Spheres Structure in Body-Centered Cubic Pattern

This paper investigates the elastic properties of a new type of hollow spheres structure numerically. In the new structure, hollow spheres perforated regularly with several holes, which are to open the inner sphere volume and surface, are bonded in the body-centered cubic (BCC) pattern. A 5×5 cells finite element model under the uniaxial load is established by Abaqus for the simulation. By changing the wall thickness, hole diameter and the bonding radius in the finite element model, the Young's modulus and Poisson's ratio of the BCC packing perforated hollow spheres structure (PHSS) as functions of these geometrical properties are shown, and the influence of these parameters on the structural elastic properties is analyzed. (paper)