Description of deformation process in inherently anisotropic granular materials
Article first published online: 15 NOV 2011
Copyright © 2011 John Wiley & Sons, Ltd.
International Journal for Numerical and Analytical Methods in Geomechanics
Volume 37, Issue 5, pages 478–490, 10 April 2013
How to Cite
Pietruszczak, S. and Guo, P. (2013), Description of deformation process in inherently anisotropic granular materials. Int. J. Numer. Anal. Meth. Geomech., 37: 478–490. doi: 10.1002/nag.1106
- Issue published online: 14 MAR 2013
- Article first published online: 15 NOV 2011
- Manuscript Accepted: 8 SEP 2011
- Manuscript Revised: 6 SEP 2011
- Manuscript Received: 14 JUL 2011
- constitutive relations;
- inherent anisotropy;
The main focus in this work is on modeling of mechanical response of granular materials that display inherent anisotropy. Both the experimental and numerical investigations are described. First, the results of direct shear as well as drained/undrained triaxial tests that involve crushed limestone with elongated angular-shaped particles are reviewed. Afterward, a mathematical framework is presented for modeling of elastic/ inelastic deformation that incorporates the multi-laminate approach. The deformation is monitored on a set of randomly oriented planes, and the formulation incorporates the thickness of the shear band that is associated with sliding/separation process. A systematic procedure for identification of material functions/ parameters is outlined that is based on the results of direct shear tests, and the framework is later applied to simulate the behavior under triaxial conditions. The results of numerical simulations are compared with the experimental data. Copyright © 2011 John Wiley & Sons, Ltd.