Detail publikace
O interakci kolineárních mikrotrhlin a částic a některých souvisejících problémech
T.PROFANT, M.KOTOUL
Český název
O interakci kolineárních mikrotrhlin a částic a některých souvisejících problémech
Anglický název
On collinear microcrack-inclusion arrays interaction and related problems
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
Investigated is a crack problem for an array of collinear microcracks in composite matrix. Inclusions are situated in between the neighbouring microcracks tips and exhibit different elastic properties than matrix. The problem is solved using the technique of distributed dislocations. A developed approximate solution for a single dislocation lying in a general point between inclusions is employed in the distribution of continuously distributed dislocation to cracks modelling . Stress intensity factor is calculated for various cracks/inclusions geometries and elastic moduli mismatches. Stability and/or instability of the straight microcrack paths is investigated for slowly growing microcracks with inclusions located in between the neighbouring microcracks tips. Applications to periodic microcrack tunnelling and microcracks weakening ahead of the main crack are discussed.
Český abstrakt
Je vyšetřován problém interakce kolineárních trhlin a inkluzí v křehké matrici. Problém je řešen pomocí techniky spojitě rozložených dislokací. Součinitel intenzity napětí je vypočten pro různá uspořádání mikrotrhlin a inkluzí a pro různé kombinace elastických konstant. Stabilita, případně nestabilita trajektorií pomalu rostoucích mikrotrhlin je vyšetřována s ohledem na vliv inkluzí. Jsou diskutovány některé aplikace týkající se tunelování periodicky rozmístěných mikrotrhlin a oslabení matrice mikrotrhlinami před magistrální trhlinou.
Anglický abstrakt
Investigated is a crack problem for an array of collinear microcracks in composite matrix. Inclusions are situated in between the neighbouring microcracks tips and exhibit different elastic properties than matrix. The problem is solved using the technique of distributed dislocations. A developed approximate solution for a single dislocation lying in a general point between inclusions is employed in the distribution of continuously distributed dislocation to cracks modelling . Stress intensity factor is calculated for various cracks/inclusions geometries and elastic moduli mismatches. Stability and/or instability of the straight microcrack paths is investigated for slowly growing microcracks with inclusions located in between the neighbouring microcracks tips. Applications to periodic microcrack tunnelling and microcracks weakening ahead of the main crack are discussed.
Klíčová slova česky
collinear microcracks, crack interaction, inclusion
Klíčová slova anglicky
collinear microcracks, crack interaction, inclusion
Rok RIV
2005
Vydáno
01.01.2005
ISSN
0167-8442
Časopis
Theoretical and Applied Fracture Mechanics
Ročník
44
Číslo
11
Počet stran
32
BIBTEX
@article{BUT46112,
author="Tomáš {Profant} and Michal {Kotoul},
title="On collinear microcrack-inclusion arrays interaction and related problems",
journal="Theoretical and Applied Fracture Mechanics",
year="2005",
volume="44",
number="11",
month="January",
issn="0167-8442"
}