94 citations · 613 across the 17 of their papers we have counts for
17 papers
Snap buckling of bistable beams under combined mechanical and magnetic loading
Arefeh Abbasi, Tomohiko G. Sano, Dong Yan +1
We investigate the mechanics of bistable, hard-magnetic, elastic beams, combining experiments, finite element modeling (FEM), and a reduced-order theory. The beam is made of a hard…
A Kirchhoff-like theory for hard magnetic rods under geometrically nonlinear deformation in three dimensions
Tomohiko G. Sano, Matteo Pezzulla, Pedro M. Reis
Magneto-rheological elastomers (MREs) are functional materials that can be actuated by applying an external magnetic field. MREs comprise a composite of hard magnetic particles dis…
The shapes of physical trefoil knots
Paul Johanns, Paul Grandgeorge, Changyeob Baek +3
We perform a compare-and-contrast investigation between the equilibrium shapes of physical and ideal trefoil knots, both in closed and open configurations. Ideal knots are purely g…
Technical Brief: Finite Element Modeling of Tight Elastic Knots
Changyeob Baek, Paul Johanns, Tomohiko G. Sano +2
We present a methodology to simulate the mechanics of knots in elastic rods using geometrically nonlinear, full three-dimensional (3D) finite element analysis. We focus on the mech…
Mechanics of two filaments in tight contact: The orthogonal clasp
Paul Grandgeorge, Changyeob Baek, Harmeet Singh +5
Networks of flexible filaments often involve regions of tight contact. Predictively understanding the equilibrium configurations of these systems is challenging due to intricate co…
Loopy Lévy flights enhance tracer diffusion in active suspensions
Kiyoshi Kanazawa, Tomohiko G. Sano, Andrea Cairoli +1
Brownian motion is widely used as a paradigmatic model of diffusion in equilibrium media throughout the physical, chemical, and biological sciences. However, many real world system…
Twist-induced snapping in a bent elastic ribbon
Tomohiko G. Sano, Hirofumi Wada
Snapping of a slender structure is utilized in a wide range of natural and man-made systems, mostly to achieve rapid movement without relying on muscle-like elements. Although seve…
Anomalous snapping behavior in asymmetrically constrained elastic strips
Tomohiko G. Sano, Hirofumi Wada
When a flat elastic strip is compressed along its axis, it is bent in one of two possible directions via spontaneous symmetry breaking and forms a cylindrical arc, a phenomenon wel…
Slip Morphology of Elastic Strips on Frictional Rigid Substrates
Tomohiko G. Sano, Tetsuo Yamaguchi, Hirofumi Wada
The morphology of an elastic strip subject to vertical compressive stress on a frictional rigid substrate is investigated by a combination of theory and experiment. We find a rich…
Granular rotor as a probe for a non-equilibrium bath
Tomohiko G. Sano, Kiyoshi Kanazawa, Hisao Hayakawa
This study numerically and analytically investigates the dynamics of a rotor under viscous or dry friction as a non-equilibrium probe of a granular gas. In order to demonstrate the…
Asymptotic derivation of Langevin-like equation with non-Gaussian noise and its analytical solution
Kiyoshi Kanazawa, Tomohiko G. Sano, Takahiro Sagawa +1
We asymptotically derive a non-linear Langevin-like equation with non-Gaussian white noise for a wide class of stochastic systems associated with multiple stochastic environments,…
Efficiency at maximum power output for an engine with a passive piston
Tomohiko G. Sano, Hisao Hayakawa
Efficiency at maximum power (MP) output for an engine with a passive piston without mechanical controls between two reservoirs is theoretically studied. We enclose a hard core gas…
Minimal Model of Stochastic Athermal Systems: Origin of Non-Gaussian Noise
Kiyoshi Kanazawa, Tomohiko G. Sano, Takahiro Sagawa +1
For a wide class of stochastic athermal systems, we derive Langevin-like equations driven by non-Gaussian noise, starting from master equations and developing a new asymptotic expa…
Roles of Dry Friction in Fluctuating Motion of Adiabatic Piston
Tomohiko G. Sano, Hisao Hayakawa
The motion of an adiabatic piston under dry friction is investigated to clarify the roles of dry friction in non-equilibrium steady states. We clarify that dry friction can reverse…
Jet-induced jammed states of granular jet impacts
Tomohiko G. Sano, Hisao Hayakawa
The impacts of granular jets for both frictional and frictionless grains in two dimensions are numerically investigated. A dense flow with a dead zone emerges during the impact. Fr…
Numerical analysis of impact processes of granular jets
Tomohiko G. Sano, Hisao Hayakawa
The rheology of a three-dimensional granular jet during an impact is investigated numerically. The cone-like scattering pattern and the sheet-like pattern observed in an experiment…
Simulation of granular jet: Is granular flow really a "perfect fluid?"
Tomohiko G. Sano, Hisao Hayakawa
We perform three-dimensional simulations of a granular jet impact for both frictional and frictionless grains. Small shear stress observed in the experiment[X. Cheng et al., Phys.…