Abstract: The paper presents an investigation into a Brazilian disk specimen featuring a concentric circular hole, accompanied by two internal edge radial cracks. By introducing rotations of the cracks relative to the vertical axis, a combination of fracture modes I and II is induced. Employing the finite element method, we compute stress intensity factors related to fracture modes I and II, alongside T-stresses, while varying geometric parameters such as inner and outer diameters, crack length-to-ring width ratio, and crack inclination angle. Experimental analyses of ebonite's fracture toughness in the mixed mode are conducted, subjecting samples to static loading until complete failure. Each test provides the angle at which crack initiation occurs and the corresponding critical load. Three distinct fracture criteria - the generalized maximum tangential stress criterion (GMTS), extended maximum tangential strain criterion (EMTSN), and generalized strain energy density (GSED) criterion - are employed to predict fracture direction and critical load. The outcomes exhibit good correspondence between experimental critical loads and theoretical predictions.

Cite: Kurguzov V. , Kuznetsov D.
Fracture analysis of Brazilian circular hole disk under mixed mode loading
Engineering Fracture Mechanics. 2024. V.297. 109875 :1-15. DOI: 10.1016/j.engfracmech.2024.109875 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Oct 14, 2023
Accepted:	Jan 11, 2024
Published online:	Jan 17, 2024

Identifiers:

Web of science:	WOS:001164986000001
Scopus:	2-s2.0-85184776026
Elibrary:	65537841
OpenAlex:	W4390949001

Citing:

DB	Citing
OpenAlex	6
Elibrary	4
Scopus	6
Web of science	3

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