A numerical analysis of weakening of a granitic rock by piezoelectric excitation of quartz

Arturo Rubio Ruiz, Timo Saksala, Pascal-Alexandre Kane, Mikko Hokka

Tutkimustuotos: KonferenssiartikkeliScientificvertaisarvioitu

1 Lataukset (Pure)

Abstrakti

This work presents a numerical model to simulate intergranular damage in a granitic rock by oscillating piezoelectric excitation of quartz dispersed in the structure. The damage evolution at grain boundaries was assumed to be related to fatigue and it was modelled using cohesive elements and a damage evolution model formulated in terms of discipation of mechanical work. An explicit
representation of the granular mesostructure was built, and it was subjected to high-voltage alternating-current exitation. The effect of the fatigue damage on the mechanical properties was quantified by simulated tension and compression tests. The numerical results show that the electrical treatment can potentially cause rock weakening due to fatigue, but the model needs to be calibrated with experimental data for a quantitative analysis.
AlkuperäiskieliEnglanti
OtsikkoProceedings of the ISRM 15th International Congress on Rock Mechanics and Rock Engineering & 72nd Geomechanics Colloquium
AlaotsikkoChallenges in Rock Mechanics and Rock Engineering
ToimittajatW. Schubert, A. Kluckner
Sivut1852-1857
ISBN (elektroninen)978-3-9503898-3-8
TilaJulkaistu - 2023
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaISRM International Congress on Rock Mechanics - Salzburg, Sveitsi
Kesto: 9 lokak. 202314 lokak. 2023

Conference

ConferenceISRM International Congress on Rock Mechanics
Maa/AlueSveitsi
KaupunkiSalzburg
Ajanjakso9/10/2314/10/23

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