1 research outputs found
Universality in the fracture of silica glass
The presence of universality of avalanches characterizing the inelastic
response of disordered materials has the potential to bridge the gap from
micro- to macroscale. In this study, we explore the statistics and the scaling
behavior of avalanches in the fracture of silica glass on the microscale using
molecular mechanics. We introduce a robust method for capturing and quantifying
the avalanches, allowing us to perform rigorous statistical analysis, revealing
universal power laws associated with critical phenomena. The computed exponents
suggest that nanoscale fracture of silica belongs to the same universality
class as depinning models. Additionally, the influence of an initial crack is
explored, observing deviations from mean-field predictions while maintaining
criticality. Furthermore, we investigate the strain-dependent probability
density function (PDF), its cutoff function, and the interrelation between the
critical exponents. Finally, we unveil distinct scaling behavior for small and
large avalanches of the crack growth, shedding light on the underlying fracture
mechanisms in silica glass.Comment: 11 Pages with 8 Figure