Constitutive model equation for various types of rock specimen subjected to uniaxial compression loading

DOI

10.2991/rare-16.2016.58How to use a DOI?

Keywords

Constitutive modelling; Elastic modulus; Hooke's law; Uniaxial compressive strength; Failure strain

Abstract

Right from the outset of the experimental determination of rock stress-strain response, researchers are performing uniaxial and tri-axial compression testing on the cylindrical specimens. In the last two-three decades researchers have made an attempt to develop constitutive model considering anisotropy, rheological behavior and flaws in rock. In this project static uniaxial compression tests are performed on cylindrical specimens of Kota sandstone, dolomitic limestone and three weathering classes of Delhi quartzite. Stress-strain curves have been plotted and a general constitutive model equation is derived for all the rock specimens. By observing stress-strain plot of different rock specimen, a parabolic relation between stress and strain is proposed containing two parameters m and n. The fitted resultsbythesemodelsforalltypesofrockarecomparedwiththe experimental data and with the Hooke's law. It is concluded that the amended damage constitutive model can describe the stress- strain behavior of rock quiteaccurately

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - K. Arora
AU  - T. Chakraborty
AU  - K.S. Rao
PY  - 2016/11
DA  - 2016/11
TI  - Constitutive model equation for various types of rock specimen subjected to uniaxial compression loading
BT  - Proceedings of the conference on Recent Advances in Rock Engineering (RARE 2016)
PB  - Atlantis Press
SP  - 370
EP  - 374
SN  - 2352-5401
UR  - https://doi.org/10.2991/rare-16.2016.58
DO  - 10.2991/rare-16.2016.58
ID  - Arora2016/11
ER  -