SiC/SiCコンポジットにおける微視的挙動の有限要素解析 : マトリックス中に存在する気孔および不整繊維の影響

Ceramic matrix composites based on silicon carbide (SiC) matrix offer high strength, toughness and oxidative stability up to 1200°C. However there are many cases in which it is difficult to evaluate stiffness and stress of SiC/SiC composites because of material's microscopic factors. Therefore, in this paper, (1) the relationship between stiffness and porosity were estimated by a Monte-Carlo simulation technique based on a finite element method. Results approximated to the equation of Wagh et al. (2) The effect of sin waved fiber was analyzed. Microscopic-scale stress distribution was investigated.