Nonlinear granular micromechanics model for multi-axial rate-dependent behavior

27Citations
Citations of this article
13Readers
Mendeley users who have this article in their library.

Abstract

Constitutive equations for class of materials that possess granular microstructure can be effectively derived using granular micromechanics approach. The stress-strain behavior of such materials depends upon the underlying grain scale mechanisms that are modeled by using appropriate rate-dependent inter-granular force-displacement relationships. These force-displacement functions are nonlinear and implicit evolutions equations. The numerical solution of such equation under applied overall stress or strain loading can entail significant computational expense. To address the computations issue, an efficient explicit time-integration scheme has been derived. The developed model is then utilized to predict primary, secondary and tertiary creep as well as rate-dependent response under tensile and compressive loads for hot mix asphalt. Further, the capability of the derived model to describe multi-axial behavior is demonstrated through generations of biaxial time-to-creep failure envelopes and rate-dependent failure envelopes under monotonic biaxial and triaxial loading. The advantage of the approach presented here is that we can predict the multi-axial effects without resorting to complex phenomenological modeling. © 2014 Elsevier Ltd. All rights reserved.

Cite

CITATION STYLE

APA

Misra, A., & Singh, V. (2014). Nonlinear granular micromechanics model for multi-axial rate-dependent behavior. International Journal of Solids and Structures, 51(13), 2272–2282. https://doi.org/10.1016/j.ijsolstr.2014.02.034

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free