Tensile fracture and failure properties of porous fuse network – Luo Yuxin

Luo Yuxin
WW8, FAU

17. Dezember 2024, 17:00
WW8, Fürth

This study investigates the tensile fracture and failure behavior of
porous materials using

fuse theory and the weighted Voronoi method. The research focuses on the
effects of pore

size, disorder level, and boundary conditions on the mechanical and
statistical properties of

these materials. Our results show that material strength improves with
lower disorder lev-

els and smaller pore sizes. Specifically, lower disorder reduces the
likelihood of weak spots,

enhancing strength, while smaller pore sizes reduce stress
concentration, slowing crack

growth. We also observe that boundary conditions, particularly with
periodic boundary

conditions, reduce computational costs and limit boundary effects,
making them ideal for

accurate simulations. The study further examines the avalanche
probability density dis-

tribution, finding that disorder significantly influences fracture
behavior. Systems with

higher disorder align with the power-law predictions of the ELS model,
while low disorder

systems exhibit a drop in scaling exponent, indicating more unstable
crack growth. These

findings emphasize the role of pore structure and disorder in
determining the mechanical

and statistical properties of porous materials and provide valuable
insights for optimizing

material design in various applications.