Abstract
In this study, the yield stress equation, flow rules and physical properties of barium titanate (BaTiO3) are experimentally obtained. These basic equations and coefficient of flow stress are introduced to finite element method, and sintering behavior of barium titanate bulk is simulated. From the uniaxial compression test, the yield stress equation of BaTiO3 is expressed by Shima’s equation, and flow rule is written by plastic equation. The coefficient of flow stress of BaTiO3 is significantly smaller than that of alumina, and the value is different when the grain size is different. The experimental sintering deformation is quantitatively reproduced by numerical simulation, where basic equation and physical properties are experimentally introduced. In addition, the coefficient of flow stress could be determined by simulation sensitivity analysis. Through this study, experimentally obtained yield stress equation, flow rules, and coefficient of flow stress are numerically validated.
This Paper was Originally Published in J. Jpn. Soc. Powder Powder Metallurgy, in press. https://doi.org/10.2497/jjspm.23-00087
