A novel multiscale approach to brittle fracture of nano/micro-sized components
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU134510" target="_blank" >RIV/00216305:26620/19:PU134510 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/full/10.1111/ffe.13179" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1111/ffe.13179</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/ffe.13179" target="_blank" >10.1111/ffe.13179</a>
Alternative languages
Result language
angličtina
Original language name
A novel multiscale approach to brittle fracture of nano/micro-sized components
Original language description
Principles and advantages of a new concept based on the ab initio aided strain gradient elasticity theory are shown in comparison with the classical Barenblatt cohesive model. The method is applied to the theoretical prediction of the critical energy release rate and the crack tip opening displacement at the crack instability in nanopanels made of germanium and molybdenum crystals. The necessary length scale parameter l1 is determined for germanium and molybdenum by the best gradient elasticity fits of ab initio computed screw dislocation displacements and phonon dispersions. Values of ab initio computed critical energy release rates and crack opening profiles revealed that the length l1 is related to inflexion points of profiles. A novel ab initio method in combination with continuum mechanics was successfully tested to replace molecular statics dependent of availability of interatomic potentials. The asymptotic strain gradient elasticity solution for displacement components near the crack tip in materials with cubic lattice was also derived.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Fatigue & Fracture of Engineering Materials & Structures
ISSN
8756-758X
e-ISSN
1460-2695
Volume of the periodical
43
Issue of the periodical within the volume
8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
1630-1645
UT code for WoS article
000504651900001
EID of the result in the Scopus database
2-s2.0-85078287577