Numerical Studies of the Influence of the Porosity on Macroscopic Elastic Properties of Carbon/Carbon Composites

Abstract

Material parameter identification of the carbon/carbon composites was provided using numerical implementation of semianalytical methods and FE-calculations. The distribution of the fibers and pores obtained from microstructural studies is used as input for homogenization schemes for the determination of the effective elastic constants. The predictions are compared to experimental results.

Nanoscale elasticity of highly anisotropic pyrocarbons

“…C/C composites are usually obtained through the deposition of a carbon matrix on a carbon fiber cloth, using different possible chemical routes, from gas or liquid precursors. Understanding the mechanical and thermal behavior of such composite materials is not straightforward and usually requires multiscale models in which the materials scale is described using finite element methods considering effective properties for the fibers and matrix as well as mean field theories [1][2][3][4]. Properties of the fibers, both mechanical and thermal, are extremely well documented in the literature due to the possibility of directly performing the measurements on single filaments.…”