Effects of disorder on deformation and failure of brittle porous materials

TL;DR

This study investigates how structural disorder influences the deformation and failure of brittle porous materials, revealing that disorder significantly affects static properties but is less impactful under dynamic loading.

Contribution

It applies bond-based peridynamics to analyze the effects of disorder on brittle porous solids in static and dynamic conditions, highlighting the differing roles of disorder.

Findings

Disorder strongly affects stiffness, strength, and toughness in static conditions.

Under dynamic loading, the influence of disorder diminishes.

Structural disorder's impact varies with loading rate.

Abstract

The mechanical behavior of porous materials depends strongly on porosity and pore geometry, but also on morphological parameters characterizing the spatial arrangement of pores. Here we use bond-based peridynamics to study effects of disorder on the deformation and failure behavior of brittle porous solids both in the quasi-static limit and in case of dynamic loading scenarios. We show that structural disorder, which has a strong influence on stiffness, strength and toughness in the quasi-static limit, becomes less relevant under dynamic loading conditions.