Parametric Study on the Connection Between Poisson’s Ratio, GSI and Environmental Stress

Benedek András Lógó; Balázs Vásárhelyi

doi:10.24423/cames.287

Benedek András Lógó Budapest University of Technology and Economics
Balázs Vásárhelyi Budapest University of Technology and Economics

DOI: http://dx.doi.org/10.24423/cames.287

Abstract

According to its definition, Poisson’s ratio is a measure of the Poisson effect, the phenomenon in which a material tends to expand in directions perpendicular to the direction of compression or, in other words, Poisson’s ratio is the ratio of relative contraction to relative expansion. For the sake of simplicity, it is handled as a constant. However, in reality, it is a variable. One can find several studies on this topic. This paper aims to study the impact of the environmental (confining) pressure and rock quality (namely the geological strength index, GSI) of rock mass on Poisson’s ratio. By using parametric investigation, several cases were calculated to present the functional dependency between the quantities mentioned above.

Keywords

Poisson’s ratio, geological strength index (GSI), stress depend, variable environmental stress,

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