 | | 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: | | 12788 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8028
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| In English (Mech. Solids): | | 4760 |
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| L.A. Igusheva and Yu.V. Petrov, "Effect of Hydrostatic Pressure and Heat Treatment on The Sandstone Dynamic Compressive Strength," Mech. Solids. 59 (2), 998-1006 (2024) |
| Year |
2024 |
Volume |
59 |
Number |
2 |
Pages |
998-1006 |
| DOI |
10.1134/S0025654424602714 |
| Title |
Effect of Hydrostatic Pressure and Heat Treatment on The Sandstone Dynamic Compressive Strength |
| Author(s) |
L.A. Igusheva (Saint Petersburg State University, St. Petersburg, 198504 Russia, igusheva15@gmail.com)
Yu.V. Petrov (Saint Petersburg State University, St. Petersburg, 198504 Russia; Institute for Problems in Mechanical Engineering of Russian Academy of Sciences, St. Petersburg, 199178 Russia, yuripetr@gmail.com) |
| Abstract |
Available experimental data on the additional external factors that influence the sandstone
dynamic fracture are analyzed using the incubation time approach. Compressive strength dependences on loading rate are obtained for hydrostatically compressed and preheated sandstone samples.
It is shown that with increasing loading rate, the strength characteristics of sandstone increase for all
treatment temperature and hydrostatic pressure values. With increasing hydrostatic pressure, an
increase in dynamic compressive strength is observed. A linear increasing relationship is established
between the incubation time and the external hydrostatic pressure. The effect of pre-heat treatment on
the sandstone dynamic compressive strength is assessed. It was found that heat-pretreated samples
have lower compressive strength than samples not exposed to heat for all loading rates. The incubation
time values are calculated for each pre-treatment temperature. The compressive strength inversion
effect is discussed demonstrating that when comparing two sandstone samples treated at different temperatures one sandstone sample has higher compressive strength under quasi-static loads but is more
easily damaged under high-velocity loads compared to the second sample. It is shown that to describe
the dynamic fracture considering the influence of additional external factors, such as hydrostatic pressure and heat-treatment, two material constants (incubation time and static compressive strength) are
sufficient. |
| Keywords |
dynamic compressive strength, rocks, sandstone, heat treatment, hydrostatic pressure, incubation time |
| Received |
12 February 2024 | Revised |
11 March 2024 | Accepted |
13 March 2024 |
| Link to Fulltext |
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