Work

A finite viscoelastic phase-field model for prediction of crack propagation speed in elastomers

Year: 2025

Type: article

Abstract: Crack propagation in soft viscoelastic solids is crucial in many applications, yet accurate modeling of their fracture behavior, particularly the rate-dependent fracture toughness, remains a challenge. We address this by proposing a thermodynamically consistent phase-field fracture model for viscoelastic materials. The model incorporates both equilibrium and non-equilibrium elastic energies, along with distinct dissipation mechanisms for viscous losses and irreversible damage processes. Importantly, two characteristic time scales are introduced, reflecting the distinct nature of viscous relaxation and damage evolution, both of which significantly influence crack propagation dynamics. Our numerical simulations accurately capture the experimentally observed fracture behavior in pre-stretched elastomeric membranes, including the evolving crack profile shape and the power-law relationship between crack speed and pre-stretch.

Source: European Journal of Mechanics - A/Solids

DOI: 10.1016/j.euromechsol.2025.105678

Authors: Jacopo Ciambella, Giovanni Lancioni, Nico Stortini

Institutions: Sapienza University of Rome, Marche Polytechnic University

Language: English

Topic: Numerical methods in engineering

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,040

Funder: Ministero dell'Istruzione e del Merito