 | | 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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| A. I. Malkin and E. M. Podgaetskii, "Hydrodynamic effects in physical-chemical fracture mechanics. Part 2. Crack initiation and growth," Mech. Solids. 37 (3), 117-128 (2002) |
| Year |
2002 |
Volume |
37 |
Number |
3 |
Pages |
117-128 |
| Title |
Hydrodynamic effects in physical-chemical fracture mechanics. Part 2. Crack initiation and growth |
| Author(s) |
A. I. Malkin (Moscow)
E. M. Podgaetskii (Moscow) |
| Abstract |
In the framework of previously proposed models, we study hydrodynamical effects
in processes of fracture of solid bodies in active liquid media.
We calculate the period of induction of crack initiation under
"instantaneous" loading and find the dependence of the crack initiation stress
on the strain rate for a solid body loaded with constant velocity.
It is shown that these models result in qualitatively correct
kinematic diagrams and can be used to explain the observed laws.
Two mechanisms of crack growth rate stabilization are considered-
the reduction of local stresses at the crack tip and
the appearance of cavitational micro-discontinuities in the liquid.
Relations for crack growth are obtained for the stage of stable growth.
The possibility of coexistence of qualitatively different growth modes is
established. This possibility is due to the nonlocal hydrodynamical
interaction of the fracturing solid body and the external liquid. Special
properties of the kinetics due to the nonlocal hydrodynamical interaction
have no relation to the details of fracture micro-mechanisms. Probably, for
this reason the kinematic diagrams of crack growth are qualitatively
similar for various material-medium combinations. |
| References |
| 1. | A. I. Malkin and E. M. Podgaetskii,
"Hydrodynamical effects in physical-chemical fracture mechanics. Part 1.
Kinetic models," Izv. AN. MTT [Mechanics of Solids], No. 2, pp. 134-144,
2001. |
| 2. | V. A. Bershtein,
Mechanical-Hydrolytic Processes and Strength of Solids [in Russian],
Nauka, Leningrad, 1987. |
| 3. | S. Wiederhorn, "A chemical interpretation of static fatigue,"
I. Amer. Ceram. Soc., Vol. 55, No. 2, pp. 81-85, 1972. |
| 4. | S. Wiederhorn, S. Freiman, E. Fuller, and C. J. Simmons,
"Effects of water and other dielectrics on crack growth,"
J. Mater. Sci., Vol. 17, No. 12, pp. 3460-3478, 1982. |
| 5. | E. Fuller, B. Lawn, and R. Thomson,
"Atomic modelling of chemical interaction at crack tips,"
Acta Metallurg, Vol. 28, No. 10, pp. 1405-1414, 1980. |
| 6. | R. Thomson, Physics of Fracture.
Atomic Theory of Fracture [Russian translation], Mir, Moscow, 1987. |
| 7. | G. P. Cherepanov, Mechanics of Brittle Fracture [in Russian], Nauka,
Moscow, 1974. |
| 8. | M. Kh. Kadmar, Liquid Metal Embrittlement. Embrittlement of
Structural Steels and Alloys [in Russian], Metallurgiya, Moscow, 1988. |
| 9. | E. E. Glikman and Yu. V. Goryunov,
"Mechanism of liquid metal brittleness and other manifestations of the
Rebinder effect in metal systems," Fiz.-Khim. Mekh. Materialov, Vol. 14,
No. 4, pp. 20-30, 1978. |
| 10. | V. I. Likhtman, E. D. Shchukin, and P. A. Rebinder,
Physical-Chemical Mechanics of Metals [in Russian], Izd-vo AN SSSR, Moscow, 1962. |
| 11. | P. A. Rebinder and E. D. Shchukin, "Surface phenomena in solids in
the process of their deformation and fracture," P. A. Rebinder. Selected
Works [in Russian], pp. 203-268, Nauka, Moscow, 1979. |
| 12. | M. P. Svaruk, Stress Intensity Factors in Solids with Cracks [in Russian],
Naukova Dumka, Kiev, 1988. |
|
| Received |
17 May 2000 |
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