Abstract
Understanding and predicting the compositional dependence of the stiffness of silicate glasses is key for various technological applications. Here, we propose a new topological model for predicting the Young's modulus of silicate glasses. We show that the Young's modulus is governed by the volumetric density of bond-stretching and bond-bending topological constraints acting in the atomic network. The predicted Young's modulus values offer an excellent agreement with molecular dynamics and experimental data over a wide domain of compositions (the entire calcium aluminosilicate ternary system) and a large range of Young's modulus values (from around 80 to 160 GPa).
Original language | English (US) |
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Pages (from-to) | 15-19 |
Number of pages | 5 |
Journal | Journal of Non-Crystalline Solids |
Volume | 514 |
DOIs | |
State | Published - Jun 15 2019 |
Keywords
- Molecular dynamics
- Silicates
- Stiffness
- Topological constraint theory
- Young's modulus
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry