Modeling of multiple pore ceramic materials fabricated via fused deposition process

A new approach is presented that can be used to model the compressive strength behavior of brittle non-random porous materials. Elastic interactions between pores are considered, and the finite element method (FEM) is used to numerically evaluate them for the stress fields that are developed. A two-pore system is found to represent the multiple-pore material system. The FEM results are found to correlate quantitatively with uniaxial compression experimental data of non-random porous ceramics for different porosities. In this paper, variable volume fraction porosities were achieved by varying pore-pore interaction between two pores in the horizontal plane of the non-random porous structures. The pore shapes and pore sizes were maintained constant. (AIAA)