Physical Modeling of Brittle Crack Growth for dynamic impact on one-edge tension specimen
https://doi.org/10.31242/2618-9712-2019-24-1-116-122
Abstract
The modified model for dynamic crack growth in viscoelastic material has been proposed. The model based on the structural approach that includes Zhurkov thermokinetical concept and Neiber-Novozhilov criterion of brittle fracture. The structural approach describes the microstructure inhomogeneity of material and staging of crack propagation revealing by fractography as changing the scale of damage accumulation and fracture. The main parameters of the physical model approved on experimental data on pulse hit action of the striker to a notch of the previously hardly loaded single edge-notched specimen in wide range of environment temperatures has been analyzed in the paper.
Keywords
brittle fracture,
viscoelasticity,
shock loading,
tension,
crazing,
polymethylmethacrylate,
crack growth model,
crack resistance,
high-speed photo registration.
Supporting agencies: This work was supported by the Russian Foundation for Basic Research (Project 18- 48-140015) and the Program for Basic Research of State Academies of Science (Project III.28.1.1.) Using the equipment of the Center for Collective Use «Field Test Station» IPTPS SB RAS.
About the Authors
V. N. Petrov
Larionov Institute of the Physical-Technical problems of the North SB RAS
Russian Federation
Russian Federation
PETROV Viktor Nikolaevich, Researcher, Larionov Institute of the Physical-Technical problems of the North SB RAS, 1, Oktyabrskaya st., Yakutsk, 677980, Russia, https://orcid.org/0000-0002-2779-4088, v_n_petrov@iptpn.ysn.ru.
V. V. Lepov
Larionov Institute of the Physical- Technical problems of the North SB RAS
Russian Federation
Russian Federation
LEPOV Valeriy Valer’evich, Doctor of Technical Sciences, Chief Researcher, Larionov Institute of the Physical- Technical problems of the North SB RAS, 1, Oktyabrskaya st., Yakutsk, 677980, Russia, https://orcid.org/0000-0003-2360-7983, wisecold@mail.ru.
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Review
For citations:
Petrov V.N., Lepov V.V. Physical Modeling of Brittle Crack Growth for dynamic impact on one-edge tension specimen. Arctic and Subarctic Natural Resources. 2019;24(1):116-122. (In Russ.) https://doi.org/10.31242/2618-9712-2019-24-1-116-122
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