A theoretical derivation of the dilatancy equation for brittle rocks based on Maxwell model

Li, J.; Huang, H.; Wang, M.

doi:10.1007/s11600-017-0006-0

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Tytuł artykułu

A theoretical derivation of the dilatancy equation for brittle rocks based on Maxwell model

Autorzy

Li J. , Huang H. , Wang M.

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-017-0006-0

Warianty tytułu

Języki publikacji

Abstrakty

In this paper, the micro-cracks in the brittle rocks are assumed to be penny shaped and evenly distributed; the damage and dilatancy of the brittle rocks is attributed to the growth and expansion of numerous micro-cracks under the local tensile stress. A single crack’s behaviour under the local tensile stress is generalized to all cracks based on the distributed damage mechanics. The relationship between the local tensile stress and the external loading is derived based on the Maxwell model. The damage factor corresponding to the external loading is represented using thep–alpha (p–α) model. A dilatancy equation that can build up a link between the external loading and the rock dilatancy is established. A test of dilatancy of a brittle rock under triaxial compression is conducted; the comparison between experimental results and our theoretical results shows good consistency.

Słowa kluczowe

subcritical crack growth dilatancy Maxwell model distributed damage mechanics

pękanie podkrytyczne dylatacja model Maxwella

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2017

Tom

Vol. 65, no. 1

Strony

55--64

Opis fizyczny

Bibliogr. 38 poz.

Twórcy

autor

Li J.

lijierf@163.com

State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, PLA University of Science and Technology, Nanjing, China

autor

Huang H.

State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, PLA University of Science and Technology, Nanjing, China

autor

Wang M.

State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, PLA University of Science and Technology, Nanjing, China

Bibliografia

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Bibliografia

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