Instability of Critical and Geometric Characteristics of the Fracture Zone under Spall Conditions

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Instability of Critical and Geometric Characteristics of the Fracture Zone under Spall Conditions. / Petrov, Yu V.; Utkin, A. A.

In: Mechanics of Solids, Vol. 55, No. 3, 01.05.2020, p. 324-331.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{2462345a65e8412aba608e203d3e286f,

title = "Instability of Critical and Geometric Characteristics of the Fracture Zone under Spall Conditions",

abstract = "Abstract: Many features of dynamic fracture caused by shock-wave action are most pronounced under spalling conditions, i.e., when an intense wave pulse is reflected from a free boundary. Therefore, such material tests are one of the main ways to study the fracture processes occurring in a solid under ultrafast dynamic stress. Nevertheless, the geometrical characteristics of the fracture zone formed under spalling conditions are relatively little studied. It was experimentally established that the qualitative appearance of such a multiple fracture region is characterized by strong instability and depends on the parameters of the applied pulse, such as the rate of increase and decrease in stress, amplitude, and duration. Based on an analysis of a number of experimental results, it will be shown below that the unstable behavior of the fracture zone formed in the spalling conditions observed in the experiments can be explained and predicted using the structural-temporal approach based on the concept of incubation fracture time.",

keywords = "dynamic fracture, impulse loading, incubation processes, spalling, velocity dependence of strength",

author = "Petrov, {Yu V.} and Utkin, {A. A.}",

year = "2020",

month = may,

day = "1",

doi = "10.3103/S0025654420030139",

language = "English",

volume = "55",

pages = "324--331",

journal = "Mechanics of Solids",

issn = "0025-6544",

publisher = "Allerton Press, Inc.",

number = "3",

}

RIS

TY - JOUR

T1 - Instability of Critical and Geometric Characteristics of the Fracture Zone under Spall Conditions

AU - Petrov, Yu V.

AU - Utkin, A. A.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - Abstract: Many features of dynamic fracture caused by shock-wave action are most pronounced under spalling conditions, i.e., when an intense wave pulse is reflected from a free boundary. Therefore, such material tests are one of the main ways to study the fracture processes occurring in a solid under ultrafast dynamic stress. Nevertheless, the geometrical characteristics of the fracture zone formed under spalling conditions are relatively little studied. It was experimentally established that the qualitative appearance of such a multiple fracture region is characterized by strong instability and depends on the parameters of the applied pulse, such as the rate of increase and decrease in stress, amplitude, and duration. Based on an analysis of a number of experimental results, it will be shown below that the unstable behavior of the fracture zone formed in the spalling conditions observed in the experiments can be explained and predicted using the structural-temporal approach based on the concept of incubation fracture time.

AB - Abstract: Many features of dynamic fracture caused by shock-wave action are most pronounced under spalling conditions, i.e., when an intense wave pulse is reflected from a free boundary. Therefore, such material tests are one of the main ways to study the fracture processes occurring in a solid under ultrafast dynamic stress. Nevertheless, the geometrical characteristics of the fracture zone formed under spalling conditions are relatively little studied. It was experimentally established that the qualitative appearance of such a multiple fracture region is characterized by strong instability and depends on the parameters of the applied pulse, such as the rate of increase and decrease in stress, amplitude, and duration. Based on an analysis of a number of experimental results, it will be shown below that the unstable behavior of the fracture zone formed in the spalling conditions observed in the experiments can be explained and predicted using the structural-temporal approach based on the concept of incubation fracture time.

KW - dynamic fracture

KW - impulse loading

KW - incubation processes

KW - spalling

KW - velocity dependence of strength

UR - http://www.scopus.com/inward/record.url?scp=85092269805&partnerID=8YFLogxK

U2 - 10.3103/S0025654420030139

DO - 10.3103/S0025654420030139

M3 - Article

AN - SCOPUS:85092269805

VL - 55

SP - 324

EP - 331

JO - Mechanics of Solids

JF - Mechanics of Solids

SN - 0025-6544

IS - 3

ER -

ID: 76244346