 | | 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
|
| In English (Mech. Solids): | | 4760 |
|
| << Previous article | Volume 55, Issue 5 / 2020 | Next article >> |
| N.A. Kazarinov, Yu.V. Petrov, and A.V. Cherkasov, "Spatial and Temporal Discreetness as a Crucial Property of the Dynamic Fracture Process," Mech. Solids. 55 (5), 673-678 (2020) |
| Year |
2020 |
Volume |
55 |
Number |
5 |
Pages |
673-678 |
| DOI |
10.3103/S002565442005009X |
| Title |
Spatial and Temporal Discreetness as a Crucial Property of the Dynamic Fracture Process |
| Author(s) |
N.A. Kazarinov (St. Petersburg State University, St. Petersburg, 199034 Russia, n.kazarinov@spbu.ru)
Yu.V. Petrov (St. Petersburg State University, St. Petersburg, 199034 Russia; Institute for Problems in Mechanical Engineering, Russian Academy of Sciences, St. Petersburg, 199078 Russia, y.v.petrov@spbu.ru)
A.V. Cherkasov (St. Petersburg State University, St. Petersburg, 199034 Russia, andrejch96@gmail.com) |
| Abstract |
The paper discusses the dynamic propagation of cracks in brittle materials under various loads. The crack propagation is studied under both quasi-static and the shock-pulse loading conditions. Particular attention is paid to the dependences characterizing the crack propagation and having a non-stationary character. Thus, for the case of crack propagation under quasi-static loading, the crack velocity oscillations phenomenon is investigated. The problem related to the scatter of the stress intensity factor values which is observed in a number of experiments in course of the crack propagation under high-rate loading conditions is studied. The studies have been carried out using the finite element method with the structure–time fracture which is introduced into the computational scheme and which fundamentally determines the discrete mechanism of the fracture processes at a given scale level. Both quantitative and qualitative comparison of the calculation results with the available experimental data has been carried out. It is shown that taking into account the spatial and temporal discretization of the process makes it possible to explain a number of experimentally observed effects that do not fit into the traditional theoretical concepts of the dynamic fracture theory. |
| Keywords |
dynamic fracture, incubation time, crack velocity, intensity factor |
| Received |
03 February 2020 | Revised |
11 March 2020 | Accepted |
04 April 2020 |
| Link to Fulltext |
|
| << Previous article | Volume 55, Issue 5 / 2020 | Next article >> |
|
 If you find a misprint on a webpage, please help us correct it promptly - just highlight and press Ctrl+Enter
|
|
Russian 
English