Analysis of a model of field crack mechanics for brittle materials

Article dans une revue avec comité de lecture
Auteur
MORIN, Léo
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ACHARYA, Amit
67135 Carnegie Mellon University [Pittsburgh] [CMU]

URI
http://hdl.handle.net/10985/20782
DOI
10.1016/j.cma.2021.114061
Date
2021
Journal
Computer Methods in Applied Mechanics and Engineering

Résumé

A computational model for arbitrary brittle crack propagation, in a fault-like layer within a 3-d elastic domain, and its associated quasi-static and dynamic fields is developed and analyzed. It uses a FFT-based solver for the balance of linear momentum and a Godunov-type projection-evolution method for the crack evolution equation. As applications, we explore the questions of equilibria and irreversibility for crack propagation with and without surface energy, existence of strength and toughness criteria, crack propagation under quasi-static and dynamic conditions, including Modes I, II and III, as well as multiaxial compressive loadings.

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