 | | 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: | | 13088 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8125
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| In English (Mech. Solids): | | 4963 |
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| Yu.Yu. Makhovskaya, A.V. Morozov, and K.S. Kravchuk, "A Method of Viscoelastic Properties Identification for Surface Layers of Elastomers Based on Nanodynamic Indentation," Mech. Solids. 60 (1), 75-87 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
1 |
Pages |
75-87 |
| DOI |
10.1134/S002565442460524X |
| Title |
A Method of Viscoelastic Properties Identification for Surface Layers of Elastomers Based on Nanodynamic Indentation |
| Author(s) |
Yu.Yu. Makhovskaya (Ishlinsky Institute for Problems in Mechanics RAS, Moscow, 119526 Russia, makhovskaya@mail.ru)
A.V. Morozov (Ishlinsky Institute for Problems in Mechanics RAS, Moscow, 119526 Russia, morozovalexei@mail.ru)
K.S. Kravchuk (Technological Institute for Superhard and Novel Carbon Materials, NRC Kurchatov Institute, Moscow, Troitsk, 108840 Russia, kskrav@gmail.com) |
| Abstract |
A theoretical and experimental method is poroposed for identification of mechanical properties of the surface layers of highly elastic materials by the results of their dynamic indentation for
small depths (nanoDMA). The method is based on an approximate solution of the contact problem
for a rigid ball in contact with a deformable specimen, the contact being loaded by an oscillating normal force. The specimen is modeled by a linear viscoelastic half-space with the relaxation kernel presented as a sum of exponential terms. The method allows one to determine sets of parameters defining the relaxation and creep functions of a material in a time interval corresponding to the experimental
range of frequencies, as well as to calculate the dynamic storage and loss moduli for each frequency.
The application of the method is shown by an example of the analysis of the mechanical properties of
surface layers for two types of frost-resistant rubber (butadiene-nitrile and isoprene) depending on the
degree of wear of their surfaces. It is established that the wear of surfaces of the rubbers under investigation leads to an increase of the surface layers stiffness and to a decrease in their relaxation properties;
these changes are more pronounced for rubber based on nitrile butadiene than for that based on isoprene. |
| Keywords |
nanoDMA, rubber, cyclic indentation, relaxation spectrum, exponential relaxation kernel, exponential creep kernel, viscoelasticity |
| Received |
03 September 2024 | Revised |
13 September 2024 | Accepted |
14 September 2024 |
| Link to Fulltext |
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