Multiscale Mechanics of Particulate Media

Materials of a disordered particulate composition, such as granular matter and colloids, are ubiquito us 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 (elasticity, visco-plastic behavior, shear-banding) and fluid-like (rate-sensitive rheological behavior) depending on loading an d 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 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.

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Schedule
	A model for size-effects in steadily flowing granular media: formulation and basic validation Ken Kamrin, MIT
	“Buoyancy” in granular medium: how deep can an object sink in sand? Qingfan Shi, Beijing Institute of Technology Ram Chand, University of Malaya, Malaysia Sithi Vinayakam Muniandy, University of Malaya, Malaysia Kunquan Lu, Chinese Academy of Sciences, China
	Continuum modeling of size effects in dense granular flows: numerical solutions and comparison to experiments David Henann, Brown University, United States Ken Kamrin, MIT, United States
	Damage evolution in a bonded nonwoven glass fiber network under cyclic compression Thomas Siegmund, Purdue University, United States YingLong Chen, Purdue University, United States
	Decoding the chemomechanics of friction and scratch in complex granular hydrated oxides Rouzbeh Shahsavari, Rice University, United States Soroosh Jalilvand, Rice University, United States
	Effects of microscale rolling friction on dense virtual particle assemblies Zamir Syed, Iowa State University, United States David White, Iowa State University, United States
	Emergent lengthscales in the quenched stresses and elastic response of soft particle packings near jamming Kamran Karimi, CMU, United States Arka Roy, CMU, United States Craig Maloney, CMU, United States
	Experimental assessment of fracture of individual sand particles at different loading rates Niranjan Parab, Purdue University, United States Benjamin Claus, Purdue University, United States Matthew Hudspeth, Purdue University, United States Jianzhuo Sun, Purdue University, United States Weinong Chen, Purdue University, United States Kamel Fezzaa, Argonne National Laboratory, United States Xianghui Xiao, Argonne National Laboratory, United States
	Experiments and simulations of the interaction of high velocity granular slugs with structures Ashish Goel, University of Cambridge, United Kingdom Vikram Deshpande, University of Cambridge, United Kingdom Tao Liu, University of Nottingham, United Kingdom Tobias Uth
	Flow of granular materials with slip boundary condition Xinran Zhao, Carnegie Mellon University, Pittsburgh, PA, United States Mehrdad Massoudi, U.S. Department of Energy, National Energy Technology Laboratory (NETL), Pittsburgh, PA, United States
	Friction in inertial granular flows: microscopic and macroscopic origins Ryan Hurley, California Institute of Technology, United States Jose Andrade, California Institute of Technology, United States
	Granular micromechanics model for cementitious materials Payam Poorsolhjouy, University of Kansas, United States Anil Misra, University of Kansas, United States
	Height fluctuations of granular river beds modeled as a stochastic process Prashant Purohit, University of Pennsylvania, United States Raleigh Martin, University of Pennsylvania, United States Douglas Jerolmack, University of Pennsylvania, United States
	High hops on sand influenced by added mass effects Jeffrey Aguilar, Georgia Tech, United States Daniel I Goldman, Georgia Tech, United States
	Imaging forces in a three-dimensional granular material Jonathan Bares, Duke University, United States Bob Berhinger, Duke University, United States Joshua Dijksman, Wageningen UR, Netherlands Nicolas Brodu, INRIA, Bordeau, France
	Investigation of mechanisms responsible for time effects in sand using multiscale discrete element modeling Zhijie Wang, University of Michigan, United States Radoslaw Michalowski, University of Michigan, United States
	Meso-scale modeling of granular material including grain fracture using grain morphology Anne Turner, University of Tennesse – Knoxville, United States Felix Kim, University of Tennesse – Knoxville, United States Dayakar Penumadu, University of Tennesse – Knoxville, United States Eric Herbold, Lawrence Livermore National Lab, United States
	Microscopic origin of macroscopic strength in granular materials Alex Jerves, California Institute of Technology, United States Jose Andrade, California Institute of Technology, United States
	Modeling size segregation of bidisperse granular flow: the roles of segregation, advection, and diffusion Yi Fan, The Dow Chemical Company Conor Schlick, Northwestern University, United States Austin Isner, Northwestern University, United States Julio Ottino, Northwestern University, United States Paul Umbanhowar, Northwestern University, United States Lueptow Richard, Northwestern University, United States
	Nanomechanical characterization of clay micro flocs Guoping Zhang, University of Massachusetts Amherst, Amherst, MA 01003, United States Hang Yin, Southern University, Baton Rouge, LA 70813, UnitedStates Allen Reed, Naval Research Laboratory, Stennis Space Center, MS 3953, United States
	Numerical simulation of a two-component mixture (fluid-particles) between two plates Xinran Zhao, Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15236, United States Mehrdad Massoudi, U.S. Department of Energy, National Energy Technology Laboratory (NETL), P.O. Box 10940, Pittsburgh, United States
	Predicting polydisperse granular segregation Austin Isner, Northwestern University, United States Conor P. Schlick, Northwestern University, United States Paul B. Umbanhowar, Northwestern University, United States Julio M. Ottino, Northwestern University, United States Richard M. Lueptow, Northwestern University, United States
	Shear softening above jamming Corentin Coulais, Paris Sud University, FAST Lab, France Antoine Seguin, Paris Sud University, FAST Lab, France Olivier Dauchot, Paris-Tech, France
	Shear-rate-independent collisional diffusion in granular materials Paul B. Umbanhowar, Northwestern University, United States Julio M. Ottino, Northwestern University, United States Richard M. Lueptow, Northwestern University, United States Yi Fan, The Dow Chemical Company, United States
	Thermomechanics-based granular micromechanics rate dependent coupled damage-plasticity model Anil Misra, University of Kansas, United States Payam Poorsolhjouy, University of Kansas, United States Viraj Singh, University of Kansas, United States

Society of Engineering Science 51st Annual Technical Meeting

Multiscale Mechanics of Particulate Media

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