 | | 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
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| G.A. Volkov and Yu.V. Petrov, "On the Analysis of Two Theoretical Approaches to Predict the Material Strength under Dynamic Loading," Mech. Solids. 57 (8), 1958-1963 (2022) |
| Year |
2022 |
Volume |
57 |
Number |
8 |
Pages |
1958-1963 |
| DOI |
10.3103/S0025654422080283 |
| Title |
On the Analysis of Two Theoretical Approaches to Predict the Material Strength under Dynamic Loading |
| Author(s) |
G.A. Volkov (Institute for Mechanical Engineering Problems, Russian Academy of Sciences, St. Petersburg, 199178 Russia;St. Petersburg State University, St. Petersburg, 199034 Russia, g.volkov@spbu.ru)
Yu.V. Petrov (Institute for Mechanical Engineering Problems, Russian Academy of Sciences, St. Petersburg, 199178 Russia;St. Petersburg State University, St. Petersburg, 199034 Russia, y.v.petrov@spbu.ru) |
| Abstract |
In this paper, we compare two approaches to describing the rate dependence of the strength
of materials under conditions of dynamic loading with a constant strain rate. The first is based on a
structural model of a brittle continuous medium with defects, which makes it possible to derive a
semiempirical normalization relation to describe the rate dependence of the strength of a wide class of
materials in a single normalized space. The second is based on the concept of incubation time of
destruction, which is a strength parameter that characterizes the sensitivity of a material to the intensity and form of the loading impact. The interrelation and distinctive features of these two approaches
are studied, as well as the rate dependences of strength for some materials are compared by modeling. |
| Keywords |
dynamic strength, strength rate dependence, incubation time criterion, normalization relation |
| Received |
25 March 2022 | Revised |
12 May 2022 | Accepted |
18 May 2022 |
| Link to Fulltext |
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