Simulation of cracking of metal alkoxide gel film formed on viscous precursor layer using a spring-block model
Drying-induced cracking of thin films attached to a non-solid (viscous) substrate is studied both experimentally and numerically. The numerical model is essentially a modification of the spring-block model, introducing a shear stress due to faster drying of the upper film layer, and annealed disorde...
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Published in | Europhysics letters Vol. 95; no. 6; pp. 64005 - 64010 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
01.09.2011
EPS, SIF, EDP Sciences and IOP Publishing |
Subjects | |
Online Access | Get full text |
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Summary: | Drying-induced cracking of thin films attached to a non-solid (viscous) substrate is studied both experimentally and numerically. The numerical model is essentially a modification of the spring-block model, introducing a shear stress due to faster drying of the upper film layer, and annealed disorder in the distribution of the spring strengths. The simulation results are in a qualitative agreement with the experimental results, covering all the qualitatively different experimental regimes of the fragment formation. The model allows us to identify the physical processes responsible for the formation of micro-tubes in our experiments, and is helpful in designing and interpreting the film cracking experiments. |
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Bibliography: | publisher-ID:epl13824 istex:09B11FAD2EC0C9965AEE0A2056B2B148C927530C ark:/67375/80W-KDWG97F3-D |
ISSN: | 0295-5075 1286-4854 |
DOI: | 10.1209/0295-5075/95/64005 |