 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12804 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4760 |
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| R.V. Goldstein and M.N. Perelmuter, "Kinetics of Crack Formation and Growth on the Material Interface," Mech. Solids. 47 (4), 400-414 (2012) |
| Year |
2012 |
Volume |
47 |
Number |
4 |
Pages |
400-414 |
| DOI |
10.3103/S002565441204005X |
| Title |
Kinetics of Crack Formation and Growth on the Material Interface |
| Author(s) |
R.V. Goldstein (Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences, pr-t Vernadskogo 101, str. 1, Moscow, 119526 Russia, goldst@ipmnet.ru)
M.N. Perelmuter (Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences, pr-t Vernadskogo 101, str. 1, Moscow, 119526 Russia, perelm@ipmnet.ru) |
| Abstract |
A model of thermal fluctuation crack formation in a weakened bond region on a material interface is proposed. The weakened bond region is modeled by a bridged crack whose properties vary in time according to the thermal fluctuation mechanism. It is assumed that at least one of the materials is a polymer and the crack part occupied by bridges (the end region) is not small compared with the crack length. The stresses in the bridges and the kinetic dependence of the bond density in the crack end region are determined by solving a system of singular integrodifferential equations. The condition for the crack-defect nucleation is the decrease to the critical value of the average bond density on the corresponding part of the weakened bond region. Numerical results permitting one to estimate the crack nucleation time and the typical levels of external loads for the chosen material parameters are presented. |
| Keywords |
crack formation and growth, end region, thermal fluctuation fracture, durability, integrodifferential equations |
| References |
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|
| Received |
30 November 2011 |
| Link to Fulltext |
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