Experience of determining the parameters of the elastoviscoplastic soil model

Armen Ter-Martirosyan,Artur Manukyan,Lyubov Ermoshina,P Akimov,A Tusnin,A Doroshenko,N Vatin

doi:10.1051/e3sconf/202126302051

Armen Ter-Martirosyan, Artur Manukyan + Show 5 more

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https://doi.org/10.1051/e3sconf/202126302051

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Abstract

Rheological studies of soils were carried out by S.S. Vyalov, M.N. Gol’dshtejn, N.N. Maslov, G.I. Ter-Stepanyan, S.R. Meschyan, A.L. Gol’din, Z.G. Ter-Martirosyan and many others. On the basis of existing rheological soil models, a new universal rheological equation was proposed in Ter-Martirosyan’s dissertation, which allows describing kinematic shear, creep and stress relaxation at the same parameters. Experimental studies of the soil were carried out in a simple shear device in a kinematic loading mode at a shear displacement rate u̇= 0.05 mm/min and at two values of compaction loads (σ1 < σ2). Based on the results of the experimental studies, the parameters of the elastoviscoplastic model were determined and graphs of the dependence of shear stresses on time were plotted, which clearly show the high convergence of the experimental and theoretical curves.

Highlights

Rheology as a science dates back to the 16th century with the derivation of Newton's law of proportionality between the resistance of a fluid to flow and shear rate
In the MathCad software using the "Odesolve" function, a graph of the dependence of shear stresses on time W t was plot, which almost completely coincides with the graph obtained from the results of experimental studies of clay soil in a simple shear device (Figure 2)
Based on the results obtained, the following main conclusions can be drawn: 1. In the course of the study, experimental studies of clay soil were carried out in a simple shear device in a kinematic loading mode J const at a rate shear displacement of u =0.05 mm / min and at two values of the compressive loads V1 V2

Summary

Introduction

Rheology as a science dates back to the 16th century with the derivation of Newton's law of proportionality between the resistance of a fluid to flow and shear rate. The discovery of Poiseuille's law made it possible to establish that the higher the viscosity of a liquid, the lower the volumetric flow rate of this liquid. The derivation of the Nov'e-Stoks equation made it possible to describe the motion of a viscous Newtonian fluid. A great contribution to the development of soil rheology was made by K. SHukle, A.R. Rzhanicyn, Z.G. Ter-Martirosyan and many others [1-6]

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