A comparative study of the hypoplasticity and the fabric-dependent dilatant double shearing models for granular materials
- Tulane Univ., New Orleans, LA
In this paper, we consider the mechanical response of granular materials and compare the predictions of a hypoplastic model with that of a recently developed dilatant double shearing model which includes the effects of fabric. We implement the constitutive relations of the dilatant double shearing model and the hypoplastic model in the finite element program ABACUS/Explicit and compare their predictions in the triaxial compression and cyclic shear loading tests. Although the origins and the constitutive relations of the double shearing model and the hypoplastic model are quite different, we find that both models are capable of capturing typical behaviours of granular materials. This is significant because while hypoplasticity is phenomenological in nature, the double shearing model is based on a kinematic hypothesis and microstructural considerations, and can easily be calibrated through standard tests.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States); Tulane Institute for Macromolecular Engineering and Science (TIMES), Tulane University, New Orleans, LA
- Sponsoring Organization:
- USDOE - Office of Fossil Energy (FE)
- DOE Contract Number:
- None cited
- OSTI ID:
- 912769
- Report Number(s):
- DOE/NETL-IR-2007-047; 0363-9061 (print); TRN: US200801%%1009
- Journal Information:
- International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 31, Issue 5
- Publisher:
- Wiler Interscience (John Wiley & Sons, Ltd.)
- Country of Publication:
- United States
- Language:
- English
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