Data from: A Griffith description of fracture for non-monotonic loading with application to fatigue

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With the fundamental objective of establishing the universality of the Griffith energy competition to describe the growth of large cracks in solids not just under monotonic but under general loading conditions, this paper puts forth a generalization of the classical Griffith energy competition in nominally elastic brittle materials to arbitrary non-monotonic quasistatic loading conditions, which include monotonic and cyclic loadings as special cases. Centered around experimental observations, the idea consists in: i) viewing the critical energy release rate Gc not as a material constant but rather as a material function of both space X and time t, ii) one that decreases in value as the loading progresses, this solely within a small region around crack fronts, with the characteristic size of such a region being material specific, and iii) with the decrease in value of Gc being dependent on the history of the elastic fields. By construction, the proposed Griffith formulation is able to describe any Paris-law behavior of the growth of large cracks in nominally elastic brittle materials for the limiting case when the loading is cyclic. For the opposite limiting case when the loading is monotonic, the formulation reduces to the classical Griffith formulation. Additional properties of the proposed formulation are illustrated via a parametric analysis and direct comparisons with representative fatigue fracture experiments on a ceramic, mortar, and PMMA. ... [Read More]

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Dolbow, J. E. & Lopez-Pamies, O. 2024. Data from: A Griffith description of fracture for non-monotonic loading with application to fatigue. Duke Research Data Repository. https://doi.org/10.7924/r4wd4323c

Creator: Lopez-Pamies, Oscar
Dolbow, John E.
DOI: 10.7924/r4wd4323c
Subject: Paris law
Fatigue
Fracture
Brittle materials
Energy methods
Publication Date: July 1, 2024
ARK: ark:/87924/r4wd4323c
Affiliation: Thomas Lord Department of Mechanical Engineering and Materials Science
Publisher: Duke Research Data Repository
Type: Dataset
Format: XLSX
Related Materials: Saha, S., Dolbow, J. E., & Lopez-Pamies, O. (2024). A Griffith description of fracture for non-monotonic loading with application to fatigue. Journal of the Mechanics and Physics of Solids. https://doi.org/10.1016/j.jmps.2024.105754
Funding Agency: National Science Foundation
Grant Number: CMMI-2132528
CMMI-2132551
Contact: John Dolbow: https://orcid.org/0000-0002-6250-2183, jdolbow@duke.edu
License: Creative Commons CC0 1.0 Universal
Title: Data from: A Griffith description of fracture for non-monotonic loading with application to fatigue
License: http://creativecommons.org/publicdomain/zero/1.0/
Repository: Duke Research Data Repository

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