Research output: Contribution to journal › Article › peer-review
Instability of critical characteristics of crack propagation. / Petrov, Y. V.; Cherkasov, A. V.; Kazarinov, N. A.
In: Acta Mechanica, 18.11.2020.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Instability of critical characteristics of crack propagation
AU - Petrov, Y. V.
AU - Cherkasov, A. V.
AU - Kazarinov, N. A.
N1 - Publisher Copyright: © 2020, Springer-Verlag GmbH Austria, part of Springer Nature. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11/18
Y1 - 2020/11/18
N2 - The paper presents the numerically evaluated dependence of the stress intensity factor (SIF) on crack velocity (KI- a˙ dependence) in Homalite-100 specimens subjected to pulse loading. Experiments on crack propagation (Ravi-Chandar and Knauss in Int J Fract 25:247–262, 1984. https://doi.org/10.1007/BF00963460; Int J Fract 26:65–80, 1984. https://doi.org/10.1007/BF01152313; Int J Fract 26:141–154, 1984. https://doi.org/10.1007/BF01157550; Int J Fract 26:189–200, 1984. https://doi.org/10.1007/bf01140627) were simulated using the finite element method and incubation time fracture criterion. According to (Ravi-Chandar and Knauss in Int J Fract 26:141–154, 1984. https://doi.org/10.1007/BF01157550), experimental data on the SIF–crack velocity dependence exhibit unstable behavior, i.e. considerable scattering of the SIF values: a broad range of SIF values corresponds to a single crack velocity. This way, the conventional approach based on a KI- a˙ dependence being a material property is not applicable in this case. Such a phenomenon is also observed in a numerically obtained KI- a˙ dependence, meaning that the developed approach makes it possible to evade the known ambiguity of the KI- a˙ relation to predict the crack propagation.
AB - The paper presents the numerically evaluated dependence of the stress intensity factor (SIF) on crack velocity (KI- a˙ dependence) in Homalite-100 specimens subjected to pulse loading. Experiments on crack propagation (Ravi-Chandar and Knauss in Int J Fract 25:247–262, 1984. https://doi.org/10.1007/BF00963460; Int J Fract 26:65–80, 1984. https://doi.org/10.1007/BF01152313; Int J Fract 26:141–154, 1984. https://doi.org/10.1007/BF01157550; Int J Fract 26:189–200, 1984. https://doi.org/10.1007/bf01140627) were simulated using the finite element method and incubation time fracture criterion. According to (Ravi-Chandar and Knauss in Int J Fract 26:141–154, 1984. https://doi.org/10.1007/BF01157550), experimental data on the SIF–crack velocity dependence exhibit unstable behavior, i.e. considerable scattering of the SIF values: a broad range of SIF values corresponds to a single crack velocity. This way, the conventional approach based on a KI- a˙ dependence being a material property is not applicable in this case. Such a phenomenon is also observed in a numerically obtained KI- a˙ dependence, meaning that the developed approach makes it possible to evade the known ambiguity of the KI- a˙ relation to predict the crack propagation.
UR - http://www.scopus.com/inward/record.url?scp=85096203703&partnerID=8YFLogxK
U2 - 10.1007/s00707-020-02852-y
DO - 10.1007/s00707-020-02852-y
M3 - Article
AN - SCOPUS:85096203703
JO - Acta Mechanica
JF - Acta Mechanica
SN - 0001-5970
ER -
ID: 76244265