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NÁHLÍK, L. ŠESTÁKOVÁ, L. HUTAŘ, P. KNÉSL, Z.
Original Title
Crack propagation in the vicinity of interface between two elastic materials
Type
abstract
Language
English
Original Abstract
The objective of the paper is to investigate the direction of a further crack propagation from the interface between two elastic materials. The angle of crack propagation changes when the crack passes the interface. The suggested procedure based on generalized form of Sih's strain energy density factor makes it possible to estimate an angle of propagation under which the crack will propagate into the second material. The assumptions of linear elastic fracture mechanics and elastic behavior of the body with interfaces are considered. The finite element method was used for numerical calculations. The results obtained might contribute to a better understanding of the failure of materials with interfaces (e.g. layered composites, materials with protective coatings) and to a more reliable estimation of the service life of such structures.
Keywords
bi-material interface, crack propagation direction, strain energy density factor, finite element method
Authors
NÁHLÍK, L.; ŠESTÁKOVÁ, L.; HUTAŘ, P.; KNÉSL, Z.
Released
7. 9. 2008
Location
Les Diablerets, Switzerland
Pages from
P031
Pages count
1