Elastic compliances and stress intensity factors of multi-link zig-zag cracks

The zig-zag (or kinked) cracks are common in brittle materials. A procedure of estimating the stress intensity factors, as well as the compliance contributions of such cracks is suggested. We also develop a simple, and relatively accurate, approximation for the compliance contributions of cracks wit...

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Veröffentlicht in:	International journal of engineering science 2020-03, Vol.148, p.103225, Article 103225
Hauptverfasser:	Martynyuk, M., Kachanov, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Boundary conditions Brittle materials Compliance Crack Cracks Effective elastic properties Estimation Modulus of elasticity Stress intensity factors Zig-zag shape
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Beschreibung
Zusammenfassung:	The zig-zag (or kinked) cracks are common in brittle materials. A procedure of estimating the stress intensity factors, as well as the compliance contributions of such cracks is suggested. We also develop a simple, and relatively accurate, approximation for the compliance contributions of cracks with multiple links that “shortcuts” the mentioned procedure. In addition, we suggest how to apply results for zig-zag geometries to estimating elastic compliances of certain curvilinear cracks.
ISSN:	0020-7225 1879-2197
DOI:	10.1016/j.ijengsci.2020.103225