346 citations · 490 across the 7 of their papers we have counts for
7 papers
Effective drag of a rod in fluid-saturated granular beds
Benjamin Allen, Arshad Kudrolli
We measure the drag encountered by a vertically oriented rod moving across a sedimented granular bed immersed in a fluid under steady-state conditions. At low rod speeds, the prese…
Granular bed consolidation, creep and armoring under subcritical fluid flow
Benjamin Allen, Arshad Kudrolli
We show that a freshly sedimented granular bed settles and creeps forward over extended periods of time under an applied hydrodynamic shear stress, which is below the critical valu…
Testing constitutive relations by running and walking on cornstarch and water suspensions
Shomeek Mukhopadhyay, Benjamin Allen, Eric Brown
The ability of a person to run on the surface of a suspension of cornstarch and water has fascinated scientists and the public alike. However, the constitutive relation obtained fr…
System-spanning dynamically jammed region in response to impact of cornstarch and water suspensions
Benjamin Allen, Benjamin Sokol, Shomeek Mukhopadhyay +2
We experimentally characterize the impact response of concentrated suspensions of cornstarch and water. We hypothesize that the dynamically jammed region that propagates ahead of t…
Critical shear rate and torque stability condition for a particle resting on a surface in a fluid flow
Arshad Kudrolli, David Scheff, Benjamin Allen
We advance a quantitative description of the critical shear rate needed to dislodge a spherical particle resting on a surface with a model asperity in laminar and turbu…
Stiffening solids with liquid inclusions
Robert W. Style, Rostislav Boltyanskiy, Benjamin Allen +4
From bone and wood to concrete and carbon fibre, composites are ubiquitous natural and engineering materials. Eshelby's inclusion theory describes how macroscopic stress fields cou…
Constitutive relation for the system-spanning dynamically jammed region in response to impact of cornstarch and water suspensions
Rijan Maharjan, Shomeek Mukhopadhyay, Benjamin Allen +2
We experimentally characterize the impact response of concentrated suspensions consisting of cornstarch and water. We observe that the suspensions support a large normal stress --…