Strain Rate Dependences of Dynamic Fracture Toughness and Fracture Energy of Rocks

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Strain Rate Dependences of Dynamic Fracture Toughness and Fracture Energy of Rocks. / Selyutina, N.S.

In: Physical Mesomechanics, Vol. 25, No. 4, 01.08.2022, p. 366-372.

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

BibTeX

@article{84c6374983f440a0873897bc9977e6e4,

title = "Strain Rate Dependences of Dynamic Fracture Toughness and Fracture Energy of Rocks",

abstract = "Abstract: This paper considers dynamic rock fracture from the viewpoint of the force and energy limiting criteria formulated from the concepts of the structural-temporal approach. For each limiting criterion set at a given fracture time, the incubation time is calculated as a key constant material characteristic within the proposed approach which depends on the scale and is the main measure of the material response. Experimental literature data on three-point bending are used to discuss the strain rate dependences of rock fracture toughness with varying specimen notch length and fracture work. Using the dynamic fracture of coal and granite as an example, it is shown that the incubation time determined by the force criterion is independent of the specimen notch length. Comparison is made of the marble incubation times obtained from the strain rate dependences of fracture toughness and fracture work.",

keywords = "fracture, fracture energy, fracture time, fracture toughness, fracture toughness rate, incubation time",

author = "N.S. Selyutina",

note = "Publisher Copyright: {\textcopyright} 2022, Pleiades Publishing, Ltd.",

year = "2022",

month = aug,

day = "1",

doi = "10.1134/s1029959922040105",

language = "English",

volume = "25",

pages = "366--372",

journal = "Physical Mesomechanics",

issn = "1029-9599",

publisher = "Springer Nature",

number = "4",

}

RIS

TY - JOUR

T1 - Strain Rate Dependences of Dynamic Fracture Toughness and Fracture Energy of Rocks

AU - Selyutina, N.S.

PY - 2022/8/1

Y1 - 2022/8/1

N2 - Abstract: This paper considers dynamic rock fracture from the viewpoint of the force and energy limiting criteria formulated from the concepts of the structural-temporal approach. For each limiting criterion set at a given fracture time, the incubation time is calculated as a key constant material characteristic within the proposed approach which depends on the scale and is the main measure of the material response. Experimental literature data on three-point bending are used to discuss the strain rate dependences of rock fracture toughness with varying specimen notch length and fracture work. Using the dynamic fracture of coal and granite as an example, it is shown that the incubation time determined by the force criterion is independent of the specimen notch length. Comparison is made of the marble incubation times obtained from the strain rate dependences of fracture toughness and fracture work.

AB - Abstract: This paper considers dynamic rock fracture from the viewpoint of the force and energy limiting criteria formulated from the concepts of the structural-temporal approach. For each limiting criterion set at a given fracture time, the incubation time is calculated as a key constant material characteristic within the proposed approach which depends on the scale and is the main measure of the material response. Experimental literature data on three-point bending are used to discuss the strain rate dependences of rock fracture toughness with varying specimen notch length and fracture work. Using the dynamic fracture of coal and granite as an example, it is shown that the incubation time determined by the force criterion is independent of the specimen notch length. Comparison is made of the marble incubation times obtained from the strain rate dependences of fracture toughness and fracture work.

KW - fracture

KW - fracture energy

KW - fracture time

KW - fracture toughness

KW - fracture toughness rate

KW - incubation time

UR - http://www.scopus.com/inward/record.url?scp=85137069953&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/9e4dc9c4-9791-31b0-a754-80961e9b5567/

U2 - 10.1134/s1029959922040105

DO - 10.1134/s1029959922040105

M3 - Article

VL - 25

SP - 366

EP - 372

JO - Physical Mesomechanics

JF - Physical Mesomechanics

SN - 1029-9599

IS - 4

ER -

ID: 98160282