Artículo
Crack impinging on a curved weak interface: Penetration or deflection?
Autor/es | Aranda Romero, María Teresa
García García, Israel Quintanas Corominas, Adrià Reinoso Cuevas, José Antonio |
Departamento | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte Universidad de Sevilla. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras |
Fecha de publicación | 2023-09 |
Fecha de depósito | 2023-09-06 |
Publicado en |
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Resumen | Curved weak interfaces present promising advantages to be implemented as crack arrestors in structures designed under the damage tolerant-design principles. Among other advantages, they neither add extra weight nor ... Curved weak interfaces present promising advantages to be implemented as crack arrestors in structures designed under the damage tolerant-design principles. Among other advantages, they neither add extra weight nor significantly affect the global stiffness of the structural element, in contrast with alternative crack arrestors concepts. To be employed as a crack arrestor, it is key that the interface is able to deviate the crack. If the crack penetrates across the interface, the effect of the weak interface as a crack arrestor is canceled. In view of this, this work studies how to set the interface parameters to promote crack deviation along the interface. In particular, following the dimensional analysis of the problem, the effect of three significant dimensionless parameters is studied: interface to bulk fracture toughness, interface to bulk tensile strength, and the interface curvature radius normalized with the material characteristic length. The corresponding analysis is carried out using three approaches widely applied for the prediction of cracking events: Linear Elastic Fracture Mechanics, Finite Fracture Mechanics, and a combination of Phase field and Cohesive Zone Model. The results present a clear effect of some parameters, such as the ratio of the interface to bulk fracture toughness, for which the three approaches agree. However, the results are moderately diverse in which correspond to the effect of the ratio of the interface to bulk tensile strength and quite divergent in what respect to the effect of the radius. The results are interpreted and explained as a consequence of the main assumptions behind the approaches studied. |
Agencias financiadoras | Junta de Andalucía through the Consejería de Economía y Conocimiento and European Regional Development Fund Project P20-00595 Spanish Ministry of Science and Innnovation Project PGC2018-099197-B-I00 Spanish Ministry of Science and Innnovation Project PID2020-117001GB-I00 Spanish Ministry of Science and Innnovation Project TED2021-131649B-I00 Marie Skłodowska-Curie grant agreement No. 101086342 – Project DIAGONAL |
Identificador del proyecto | P20-00595
PGC2018-099197-B-I00 PID2020-117001GB-I00 TED2021-131649B-I00 EU H2020 101086342 – Project DIAGONAL |
Cita | Aranda Romero, M.T., García García, I., Quintanas Corominas, A. y Reinoso Cuevas, J.A. (2023). Crack impinging on a curved weak interface: Penetration or deflection?. Journal of the Mechanics and Physics of Solids, 178 (105326). https://doi.org/10.1016/j.jmps.2023.105326. |
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JMPS_aranda-romero_2023_crack.pdf | 2.797Mb | [PDF] | Ver/ | |