<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The layered composite rock was subjected to triaxial compression tests under constant confining pressure and the stress–strain curves under different confining pressures were obtained. Based on the continuous damage theory and statistical strength theory, it is assumed that the strength of rock microelements obeys Weibull distribution by taking the defects such as random micro-cracks in the rock into account. The statistical constitutive model of layered composite rock with damage correction is established by taking the axial strain of rock as a random distribution variable of microelement strength. The model parameters were determined by the curve fitting method and referring to some test parameters. By comparing the experimental data and the constitutive model curve, the rationality and feasibility of the model are verified.</p>
</abstract>

The layered composite rock was subjected to triaxial compression tests under constant confining pressure and the stress–strain curves under different confining pressures were obtained. Based on the continuous damage theory and statistical strength theory, it is assumed that the strength of rock microelements obeys Weibull distribution by taking the defects such as random micro-cracks in the rock into account. The statistical constitutive model of layered composite rock with damage correction is established by taking the axial strain of rock as a random distribution variable of microelement strength. The model parameters were determined by the curve fitting method and referring to some test parameters. By comparing the experimental data and the constitutive model curve, the rationality and feasibility of the model are verified.

Study of statistical damage constitutive model of layered composite rock under triaxial compression

School of Civil Engineering and Architecture

Applied Mathematics and Nonlinear Sciences

This work is licensed under the Creative Commons Attribution 4.0 International License.

The layered composite rock was subjected to triaxial compression tests under constant confining pressure and the stress–strain curves under different confining...

Study of statistical damage constitutive model of layered composite rock under triaxial compression

Publié en ligne: 12 nov. 2021

Pages: 299 - 308

Reçu: 21 mars 2021

Accepté: 29 mai 2021

DOI: https://doi.org/10.2478/amns.2021.2.00048

Mots clés
layered composite rock, Weibull distribution, damage variable correction factor, damage constitutive model

© 2021 Yong-Sheng Liu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Study of statistical damage constitutive model of layered composite rock under triaxial compression

Publié en ligne: 12 nov. 2021

Pages: 299 - 308

Reçu: 21 mars 2021

Accepté: 29 mai 2021

DOI: https://doi.org/10.2478/amns.2021.2.00048

Mots cléslayered composite rock, Weibull distribution, damage variable correction factor, damage constitutive model

© 2021 Yong-Sheng Liu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
layered composite rock, Weibull distribution, damage variable correction factor, damage constitutive model