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Article Dans Une Revue International Journal of Fracture Année : 2024

A dialogue between different approaches to fracture for predicting a crack nucleation at the microscale

Résumé

Unraveling the material behavior at the microscale is one of the challenges of this century, demanding progress in experimental and computational strategies. Among the latter, two approaches are commonly applied for predicting crack nucleation. The Coupled Criterion (CC) and the Phase Field (PF) model, both depending on a material length parameter. In brittle materials at the macroscale, this parameter is significantly smaller than the specimen size. However, when the scale decreases, this material length might approach the structural dimensions. In this context, a comprehensive comparison between the two models is conducted, changing the ratio between the material length parameter and the dimensions of the specimen. Results indicate that when this ratio is sufficiently small predictions from both models coincide, otherwise both the CC and the PF model predict different results. Despite their differences, a good agreement with experiments reported in the literature have been observed.
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Dates et versions

hal-04622643 , version 1 (24-06-2024)

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  • HAL Id : hal-04622643 , version 1

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Sara Jiménez-Alfaro, Dominique Leguillon, Corrado Maurini, José Reinoso. A dialogue between different approaches to fracture for predicting a crack nucleation at the microscale. International Journal of Fracture, 2024. ⟨hal-04622643⟩
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