Crack path kinking in brittle fracture under pure mode i loading. / Kurguzov, Vladimir; Demeshkin, Alexander.
High-Energy Processes in Condensed Matter, HEPCM 2020: Proceedings of the XXVII Conference on High-Energy Processes in Condensed Matter, Dedicated to the 90th Anniversary of the Birth of RI Soloukhin. ed. / Vasily M. Fomin. American Institute of Physics Inc., 2020. 030020 (AIP Conference Proceedings; Vol. 2288).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
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TY - GEN
T1 - Crack path kinking in brittle fracture under pure mode i loading
AU - Kurguzov, Vladimir
AU - Demeshkin, Alexander
N1 - Funding Information: This work was supported by the Russian Foundation for Basic Research (Grant No. 18-08-00528). Publisher Copyright: © 2020 Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/10/26
Y1 - 2020/10/26
N2 - An experimental and theoretical study of the fracture strength of compact tension specimens and double cantilever beams made of polymethylmethacrylate (PMMA) under tension was carried out. The critical loads and crack propagation paths for these samples under pure mode I loading conditions differ markedly. Energy-based theoretical model, which allows predicting the instability of the crack growth path, is presented. The theoretical model takes into account both the singular term of stress in front of the crack tip and the first non-singular term known as T-stress. To verify the theoretical model, the experimental results obtained in fracture test on several mode I cracked samples are used. Computer simulation of crack propagation in a geometrically and physically nonlinear formulation has been performed. The experimental data are compared with the calculation results. It is shown that the instability of the crack path substantially depends on the geometry and can be prevented by changing the sample geometry or type of load.
AB - An experimental and theoretical study of the fracture strength of compact tension specimens and double cantilever beams made of polymethylmethacrylate (PMMA) under tension was carried out. The critical loads and crack propagation paths for these samples under pure mode I loading conditions differ markedly. Energy-based theoretical model, which allows predicting the instability of the crack growth path, is presented. The theoretical model takes into account both the singular term of stress in front of the crack tip and the first non-singular term known as T-stress. To verify the theoretical model, the experimental results obtained in fracture test on several mode I cracked samples are used. Computer simulation of crack propagation in a geometrically and physically nonlinear formulation has been performed. The experimental data are compared with the calculation results. It is shown that the instability of the crack path substantially depends on the geometry and can be prevented by changing the sample geometry or type of load.
KW - STABILITY
UR - http://www.scopus.com/inward/record.url?scp=85096635911&partnerID=8YFLogxK
U2 - 10.1063/5.0028691
DO - 10.1063/5.0028691
M3 - Conference contribution
AN - SCOPUS:85096635911
T3 - AIP Conference Proceedings
BT - High-Energy Processes in Condensed Matter, HEPCM 2020
A2 - Fomin, Vasily M.
PB - American Institute of Physics Inc.
T2 - 27th Conference on High-Energy Processes in Condensed Matter, HEPCM 2020
Y2 - 29 June 2020 through 3 July 2020
ER -
ID: 27121119