Symposium D-1: Multi-scale Mechanics of Particulate Media

(Mechanics of Solids and Structures)

Symposium Organizers:

David Henann, Brown University
david_henann@brown.edu

Ken Kamrin, Massachusetts Institute of Technology
kkamrin@mit.edu

José Andrade, California Institute of Technology
jandrade@caltech.edu

Rich Regueiro, University of Colorado at Boulder
richard.regueiro@colorado.edu

Symposium Technical Description

Materials of a disordered particulate composition, such as granular matter and colloids, are ubiquitous in industry and as geomaterials in nature. These materials display a number of distinctive phenomena, which differentiate them from ordered materials. Macroscopically, they are capable of behaving both solid-like (elasto-visco-plastic behavior, shear-banding) and fluid-like (rate-sensitive rheological behavior) depending on loading and the internal material state. This variety stems from a rich microstructural involvement, whose underlying mechanisms and connections to the continuum scale remain unresolved issues of current research. While full discrete simulation offers one approach to modeling these materials, it is generally computationally intractable for large bodies and long times. On the other hand, scale-free continuum approaches can be imprecise due to the crucial role of micro-level fluctuations and finite size-effects. These observations highlight the need for developing multiscale approaches, aimed at bridging the discrete microscale response to the macroscale. This session shall focus on the mechanics of particulate materials at length-scales ranging from the discrete particle-size to the continuum scale — using theory, simulation, and/or experimental characterization — aimed at building accurate multiscaling techniques as well as gaining a deeper general understanding of these materials for the purposes of improved modeling.

Technical Program

Monday | M1 10:00am-11:40am

D1-1: Multi-scale Mechanics of Particulate Media
Room 2112 Session Chair:  David Henann, Ken Kamrin, José Andrade, Rich Regueiro Track D:  Mechanics of Solids and Structures
10:00 am Material instability and gradient-regularization of the “mu(I)” model of granular flow (Invited)

Joe D. Goddard

10:40 am A hierarchy of granular continuum models: from flow fields to impact and mobility applications

Ken Kamrin

11:00 am Size dependence of the yield threshold in dense granular materials

Daren Liu

11:20 am Micro and macro modeling of the stress-strain and strain localization behavior of granular materials in simple shear

Marte Gutierrez

Monday | M2 1:00pm-2:40pm

D1-2: Multi-scale Mechanics of Particulate Media
Room 2112 Session Chair:  David Henann, Ken Kamrin, José Andrade, Rich Regueiro Track D:  Mechanics of Solids and Structures
1:00 pm Multiscale modeling and vibrational character of maximally dense frictional disks under shear (Invited)

Stefanos Papanikolaou

1:40 pm Effects of polydispersity on particle arrangements in flowing hard particle suspensions

Eilis Jill Rosenbaum

2:00 pm Work conjugacy in molecular dynamics

Leyu Wang, Jiaoyan Li, Cing-Dao Kan, James D Lee

2:20 pm Dynamics of inherent structure energy evolution in metallic glasses

Yue Fan

Monday | M3 3:00pm-4:40pm 

D1-3: Multi-scale Mechanics of Particulate Media
Room 2112
Session Chair:  David Henann, Ken Kamrin, José Andrade, Rich Regueiro Track D:  Mechanics of Solids and Structures
3:00 pm Strengthening, yield, and flow in fluid-sheared granular beds (Invited)

Abe Clark, Mark Shattuck, Nick Ouellette, Corey O’Hern

3:40 pm Rheological behavior of partially-wet granular matter

Ken Kamrin, Ramin Ghelichi

4:00 pm Modeling shear-rate gradient driven size-segregation in dense, bidisperse granular systems

David Henann and Daren Liu

4:20 pm Evolving Dynamics of a tapped column of inelastic spheres

Anthony D. Rosato,   Denis Blackmore, Christoher Windows-Yule

Tuesday | T1 10:00am-11:40am

D1-4: Multi-scale Mechanics of Particulate Media
Room 2112
Session Chair:  David Henann, Ken Kamrin, José Andrade, Rich Regueiro Track D:  Mechanics of Solids and Structures
10:00 am Force Measurements in stiff, 3D, opaque granular materials

Ryan Colt Hurley, Jose E. Andrade, Jonathan Wright

10:20 am Influences of particle-scale properties on the bulk scale mechanical properties of particulate systems in engineering applications

Simon  Joseph Antony

10:40 am Experimental investigation of force chains in opaque granular material under shear

Eloise Marteau

11:00 am Annular Coated Inclusion model and applications for polymer nanocomposites

Zhen Wang, Frank Fisher

11:20 am Second-order homogenization estimates for the macroscopic behavior and field fluctuations in viscoplastic composites and comparisons with full-field simulations

Joshua Furer, Pedro Ponte-Castaneda