A constitutive model for hyromechanically coupled behavior of unsaturated soils with hydraulic hysteresis

Download

index.pdf

Date

2021-07-28

Author

Eyüpgiller, Mustafa Mert
Kenanoğlu, Melih Birhan
Ülker, Mehmet Barış Can
Toker, Nabi Kartal

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

19
views

42
downloads

There are several constitutive models developed for understanding coupled hydromechanicalbehavior of three phase medium of unsaturated soils as well as models for explaining hydraulic hysteresis inwater retention. However, very few attempts that merge the two aspects of behavior are available. Thisstudy develops a one-way coupled model for understanding the hydromechanical behavior of unsaturatedsoils. In addition to the hysteresis between main drying and wetting retention curves, the model considersnon-uniqueness of retention behavior resulting from void ratio changes due to compression under the stressapplication. As for the elastoplastic stress strain relationship of soil skeleton, the model is based on theformulation of classical plasticity relying on the critical state concept. Consequently, volumetricdeformation due to wetting-drying cycles and its effect on elastoplastic behavior through simultaneouslychanging matric suction is modeled. Model results are calibrated with the results of isotropic compressionstages of triaxial tests at both constant suction and constant water content conditions.

URI

https://hdl.handle.net/11511/101102

DOI

https://doi.org/10.1051/matecconf/202133702009

Conference Name

3rd PanAmerican Conference on Unsaturated Soils

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

A methodology for lining design of circular mine shafts in different rock masses Öztürk, Hasan (2016-09-01) In this study, the finite element numerical modelling of 2D shaft sections in a Hoek-Brown medium are carried out in a non-hydrostatic stress state in an attempt to predict pressures developing around mine shafts. An iterative process of applying support pressure until observing no failure zone around the shaft is used to simulate the required lining support pressure for different shaft models. Later, regression analysis is carried out to find a generic shaft pressure equation representing the rock mass and...
A Micromechanics Based Numerical Investigation of Dual Phase Steels Yalçınkaya, Tuncay; Çakmak, Serhat Onur (Elsevier BV; 2019-01-01) The aim of this paper is to investigate the effects of microstructural parameters such as the volume fraction, morphology and spatial distribution of the martensite phase and the grain size of the ferrite phase on the plasticity and localized deformation of dual-phase (DP) steels. For this purpose, Voronoi based representative volume elements (RVEs) are subjected to proportional loading with constant stress triaxility. Two alternative approaches are employed in a comparative way to model the plastic respons...
A non-linear mathematical model for dynamic analysis of spur gears including shaft and bearing dynamics Özgüven, Hasan Nevzat (Elsevier BV, 1991-3) A six-degree-of-freedom non-linear semi-definite model with time varying mesh stiffness has been developed for the dynamic analysis of spur gears. The model includes a spur gear pair, two shafts, two inertias representing load and prime mover, and bearings. As the shaft and bearing dynamics have also been considered in the model, the effect of lateral-torsional vibration coupling on the dynamics of gears can be studied. In the non-linear model developed several factors such as time varying mesh stiffness an...
A numerical study of solidification and viscous dissipation effects on polymer melt flow in plane channels Tutar, Mustafa; Karakuş, Ali (Walter de Gruyter GmbH, 2013-04-01) The combined effects of solidification and viscous dissipation on the hydrodynamic and thermal behavior of polymer melt flow during the injection process in a straight plane channel of constant cross section are numerically studied by considering the shear-rate and temperature-dependent viscosity and transient-phase change behavior. A numerical finite volume method, in conjunction with a modified form of the Cross constitutive equation to account for shear rate, temperature-dependent viscosity changes and a...
A computational procedure for estimating residual stresses and secondary plastic flow limits in nonlinearly strain hardening rotating shafts Eraslan, Ahmet Nedim (Springer Science and Business Media LLC, 2005-03-01) A computational procedure to estimate the residual stress distributions and the limit angular speeds for avoiding secondary plastic deformation in nonlinearly strain hardening rotating elastic-plastic shafts is given. The model is based on von Mises yield condition, J(2) deformation theory and a Swift-type hardening law. The boundary value problem for the governing nonlinear differential equation is solved by a shooting method using Newton iterations with numerically approximated tangent. Solid as well as h...

Citation Formats

M. M. Eyüpgiller, M. B. Kenanoğlu, M. B. C. Ülker, and N. K. Toker, “A constitutive model for hyromechanically coupled behavior of unsaturated soils with hydraulic hysteresis,” presented at the 3rd PanAmerican Conference on Unsaturated Soils, Rio De Janeiro, Brezilya, 2021, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/101102.