An experimental and numerical study of the dynamic Brazilian disc test on Kuru granite

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An experimental and numerical study of the dynamic Brazilian disc test on Kuru granite. / Mardoukhi, Ahmad; Saksala, Timo ; Hokka, Mikko ; Kuokkala, Veli-Tapani.

Proceedings of the XII Finnish Mechanics Day. 2015. p. 210-215.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific

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@inproceedings{baee9940966f427490b89a3ea0851980,

title = "An experimental and numerical study of the dynamic Brazilian disc test on Kuru granite",

abstract = "This paper deals with numerical modeling of the dynamic tensile strength of Kuru granite and corresponding experiments with the dynamic Brazilian Disc (BD) tests using the Split Hopkinson Pressure Bar apparatus (SHPB). It was found that the indirect tensile strength of the Kuru granite increased from the static value of 13 MPa to 36 MPa when the impact velocity reached 20 m/s. A numerical method was developed for simulations of these tests. The method includes a material model based on the rate-dependent isotropic compliance damage and embedded discontinuity concepts for rock and an FEM based explicit time marching technique for simulating the dynamics of the SHPB apparatus. Simulation results are in decent agreement with the experiments.",

keywords = "Dynamic Brazilian Disc test, Split Hopkinson Pressure Bar, FEM, rock fracture",

author = "Ahmad Mardoukhi and Timo Saksala and Mikko Hokka and Veli-Tapani Kuokkala",

note = "ORG=mol,0.5 ORG=mei,0.5",

year = "2015",

language = "English",

isbn = "978-952-93-5608-9",

pages = "210--215",

booktitle = "Proceedings of the XII Finnish Mechanics Day",

}

RIS (suitable for import to EndNote) - Download

TY - GEN

T1 - An experimental and numerical study of the dynamic Brazilian disc test on Kuru granite

AU - Mardoukhi, Ahmad

AU - Saksala, Timo

AU - Hokka, Mikko

AU - Kuokkala, Veli-Tapani

N1 - ORG=mol,0.5 ORG=mei,0.5

PY - 2015

Y1 - 2015

N2 - This paper deals with numerical modeling of the dynamic tensile strength of Kuru granite and corresponding experiments with the dynamic Brazilian Disc (BD) tests using the Split Hopkinson Pressure Bar apparatus (SHPB). It was found that the indirect tensile strength of the Kuru granite increased from the static value of 13 MPa to 36 MPa when the impact velocity reached 20 m/s. A numerical method was developed for simulations of these tests. The method includes a material model based on the rate-dependent isotropic compliance damage and embedded discontinuity concepts for rock and an FEM based explicit time marching technique for simulating the dynamics of the SHPB apparatus. Simulation results are in decent agreement with the experiments.

AB - This paper deals with numerical modeling of the dynamic tensile strength of Kuru granite and corresponding experiments with the dynamic Brazilian Disc (BD) tests using the Split Hopkinson Pressure Bar apparatus (SHPB). It was found that the indirect tensile strength of the Kuru granite increased from the static value of 13 MPa to 36 MPa when the impact velocity reached 20 m/s. A numerical method was developed for simulations of these tests. The method includes a material model based on the rate-dependent isotropic compliance damage and embedded discontinuity concepts for rock and an FEM based explicit time marching technique for simulating the dynamics of the SHPB apparatus. Simulation results are in decent agreement with the experiments.

KW - Dynamic Brazilian Disc test

KW - Split Hopkinson Pressure Bar

KW - FEM

KW - rock fracture

M3 - Conference contribution

SN - 978-952-93-5608-9

SP - 210

EP - 215

BT - Proceedings of the XII Finnish Mechanics Day

ER -

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