 | | 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: | | 12854 |
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| In English (Mech. Solids): | | 4810 |
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| R. V. Goldstein, N. M. Osipenko, and A. V. Chentsov, "To determination of the strength of nanodimensional objects," Mech. Solids. 43 (3), 453-469 (2008) |
| Year |
2008 |
Volume |
43 |
Number |
3 |
Pages |
453-469 |
| DOI |
10.3103/S0025654408030163 |
| Title |
To determination of the strength of nanodimensional objects |
| Author(s) |
R. V. Goldstein (Institute for Problems in Mechanics, Russian Academy of Sciences, pr-t Vernadskogo 101, str. 1, Moscow, 119526, Russia, goldst@ipmnet.ru)
N. M. Osipenko (Institute for Problems in Mechanics, Russian Academy of Sciences, pr-t Vernadskogo 101, str. 1, Moscow, 119526, Russia)
A. V. Chentsov (Institute for Problems in Mechanics, Russian Academy of Sciences, pr-t Vernadskogo 101, str. 1, Moscow, 119526, Russia, chentsov@ipmnet.ru) |
| Abstract |
We propose several versions of experiments for determining the strength of nanodimensional objects (nanotubes) contained in the specimens of the form of reinforcing elements of special composites. The experiment methodology foundations were developed and the experiment parameters were chosen on the basis of simulation of the nanotube deformation processes and its interaction with the matrix, which reflects the specific properties of materials in the scale of nanometer dimensions according to the approach proposed earlier. The strength of reinforcing elements is determined from the load at the moment of the change of the fracture mechanism (the transition from the predominate pulling the tubes out of the matrix to their fracture). Different methods for controlling the composite stress state are used: variation in the viscousmatrix strain rate in the reinforced filament testing and variation in the energy of the chemical interaction between the nanotube and the rigidmatrix for nanoobjects of special form such as the nanotube forest grown on a rigid substrate. In the last case, the fracture stresses in nanotubes arise at the moment of separation of an elastic cantilever adjusted to the glue film reinforced by nanotubes. The critical conditions of the fracturemechanism change in the end separation region correspond to the effective specificwork of structural failure. |
| Received |
25 January 2008 |
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