Local and non-local modeling aspects of three-dimensional cracks growth initiation

Autor:	Gregory J. Rodin
Rok vydání:	2020
Předmět:	Mesoscopic physics Normal plane Computational Mechanics Front (oceanography) 02 engineering and technology Mechanics Non local 01 natural sciences Physics::Geophysics 010101 applied mathematics 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Simple (abstract algebra) Modeling and Simulation Fracture (geology) Point (geometry) 0101 mathematics Geology
Zdroj:	International Journal of Fracture. 221:211-220
ISSN:	1573-2673 0376-9429
Popis:	Three-dimensional crack growth initiation is examined under the assumption that the crack front remains smooth. Two important modeling issues, specific to three-dimensional rather than two-dimensional cracks, are addressed. First, it is established that, at each point along the crack front, the velocity and configurational force are two-dimensional vectors, lying in the local normal plane. This allows one to generalize any two-dimensional crack growth criterion to three dimensions. Second, a simple mesoscopic model to account for along-the-front non-locality is proposed. This model eliminates pathological growth patterns ubiquitous to basic models applied to three-dimensional cracks. Further, the model is straightforward to use as it relies on standard fracture properties only.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::078acb74802b5a2fdddc092983810ab7 https://doi.org/10.1007/s10704-020-00424-8 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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