A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modelling equivalent elastic properties of imperfectly bonded soil-rock mixtures using an XFEM-based computational homogenization
Abstract In this paper, a two-dimensional computational homogenization model is utilized to investigate the elastic stiffness properties of soil-rock mixtures (S-RMs). The medium is idealized as a periodic environment. Consequently, a Representative Elementary Volume (REV) containing rock aggregates within the soil matrix is adopted at the meso-scale level to estimate the homogenized properties at the macro-scale. Using the eXtended Finite Element Method (XFEM), an imperfect interface stiffness coefficient is put forward to consider the cohesiveness between rock and soil without altering the underlying regular mesh. Experimental data of S-RMs in normal and frozen conditions, which are retrieved from the literature, are employed to calibrate and validate the model for varying interface stiffness parameters. The changes in the interfacial bonding are assumed dependent on the temperature and the developed computational tool was used for modelling elastic properties of S-RMs by considering the imperfect bond at normal and frozen conditions. The consistency of the results for the REVs with the randomly distributed rock aggregates with different sizes and grading curves is investigated. Also, the effects of the number of rock aggregates and variations in the interface stiffness parameters on the effective stiffness predictions are discussed and compared with the rigid bond models.
Modelling equivalent elastic properties of imperfectly bonded soil-rock mixtures using an XFEM-based computational homogenization
Abstract In this paper, a two-dimensional computational homogenization model is utilized to investigate the elastic stiffness properties of soil-rock mixtures (S-RMs). The medium is idealized as a periodic environment. Consequently, a Representative Elementary Volume (REV) containing rock aggregates within the soil matrix is adopted at the meso-scale level to estimate the homogenized properties at the macro-scale. Using the eXtended Finite Element Method (XFEM), an imperfect interface stiffness coefficient is put forward to consider the cohesiveness between rock and soil without altering the underlying regular mesh. Experimental data of S-RMs in normal and frozen conditions, which are retrieved from the literature, are employed to calibrate and validate the model for varying interface stiffness parameters. The changes in the interfacial bonding are assumed dependent on the temperature and the developed computational tool was used for modelling elastic properties of S-RMs by considering the imperfect bond at normal and frozen conditions. The consistency of the results for the REVs with the randomly distributed rock aggregates with different sizes and grading curves is investigated. Also, the effects of the number of rock aggregates and variations in the interface stiffness parameters on the effective stiffness predictions are discussed and compared with the rigid bond models.
Modelling equivalent elastic properties of imperfectly bonded soil-rock mixtures using an XFEM-based computational homogenization
Norouzi, Emad (author) / Li, Biao (author) / Emre Erkmen, R. (author)
2022-01-09
Article (Journal)
Electronic Resource
English
| Elsevier | 2024
Wave propagation in pre-stressed imperfectly bonded compressible elastic layered composites
| British Library Online Contents | 2009
| British Library Online Contents | 2018
Numerical Modelling of Hydraulic Fracturing in Rock Mass by Xfem
| Online Contents | 2015
Numerical Modelling of Hydraulic Fracturing in Rock Mass by Xfem
| Online Contents | 2015