Přístupnostní navigace
E-přihláška
Vyhledávání Vyhledat Zavřít
Detail publikace
PROFANT, T. ŠEVEČEK, O. KOTOUL, M.
Originální název
Calculation of k-factor and t-stress for cracks in anisotropic bimaterials
Typ
článek v časopise - ostatní, Jost
Jazyk
angličtina
Originální abstrakt
The problem of a crack in a thin layer terminating perpendicular to a layer/substrate interface is analyzed for a general case of elastic anisotropy. The crack is modelled by means of continuous distribution of dislocations, which is assumed to be singular at the crack tip. A system of simultaneous functional equations is obtained that enables to find the singularity exponent . The reciprocal theorem is used to compute the generalized stress intensity factor (GSIF) through the remote stress and displacement field for a particular specimen geometry and boundary conditions using FEM. The results obtained are compared with the evaluation of GSIF based upon the dislocation arrays technique. Existing semi-analytical solution for singularities in anisotropic trimaterials is applied and its validity for the specimen investigated is checked by FEM. The evaluation of T-stress using the dislocation arrays technique is performed.
Klíčová slova
anisotropic bimaterials; generalized stress intensity factor; T-stress; FEM; reciprocal theorem; distributed dislocations technique.
Autoři
PROFANT, T.; ŠEVEČEK, O.; KOTOUL, M.
Rok RIV
2007
Vydáno
11. 10. 2007
ISSN
0013-7944
Periodikum
Engineering Fracture Mechanics
Ročník
75
Číslo
11
Stát
Spojené království Velké Británie a Severního Irska
Strany od
3707
Strany do
3726
Strany počet
20
BibTex
@article{BUT44276, author="Tomáš {Profant} and Oldřich {Ševeček} and Michal {Kotoul}", title="Calculation of k-factor and t-stress for cracks in anisotropic bimaterials", journal="Engineering Fracture Mechanics", year="2007", volume="75", number="11", pages="3707--3726", issn="0013-7944" }