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Kritérium stability bi-materiálového vrubu se dvěma singularitami
Klusák, Jan
Interfaces with a step change of material properties occur often in technical constructions. In combination with a sharp notch it usually leads to singular stress distribution in a vicinity of such a wedge. The existence of two singularities seems to be the main problem within study of this stress concentrator. The other problem is that each singularity does not correspond to particular mode of loading. The presented contribution studies stress distribution in a bi-material wedge vicinity and shows a method of solution of the problems in case of existence of multiple stress singularity
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Vliv rozhraní mezí matricí a inkluzí na šíření únavových trhlin
Náhlík, Luboš
The interaction between an inhomogeneity and a crack propagating near the circular inhomogeneity is studied under the assumptions of linear elastic fracture mechanics (LEFM). Three cases are considered: a crack located in front of the inhomogeneity, a crack situated arbitrarily near the inhomogeneity, and a special case when the crack tip lies at the interface between the matrix and the inhomogeneity. The main purpose of this paper is to find the most often configurations in materials with inhomogeneities
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Modelling of crack propagation through bi-material interface
Náhlík, Luboš
Under conditions of Linear Elastic Fracture Mechanics is studied crack behaviour in front of circular particle. The typical behaviour of crack approaching the interface between matrix and particle is showen. Results of numerical calculations and applications of earlier suggested tentative fracture criteria for crack terminating at the bi-material interface are presented.
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Interaction between crack and circular inclusion
Náhlík, Luboš
The interaction between an inhomogeneity and a crack propagating near the circular inhomogeneity is studied under the assumptions of linear elastic fracture mechanics (LEFM) (we assume elastic behaviour of the matrix and the inhomogeneity as well). Three cases are considered: a crack located in front of the inhomogeneity, a crack situated arbitrarily near the inhomogeneity, and a special case when the crack tip lies at the interface between the matrix and the inhomogeneity . The main purpose of this paper is to find the most often configurations in materials with inhomogeneities.
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