Zobrazeno 1 - 10
of 271
pro vyhledávání: '"Behringer, Robert P."'
Autor:
Kozlowski, Ryan, Carlevaro, C. Manuel, Daniels, Karen E., Kondic, Lou, Pugnaloni, Luis A., Socolar, Joshua E. S., Zheng, Hu, Behringer, Robert P.
Publikováno v:
Phys. Rev. E 100, 032905 (2019)
We report on a series of experiments in which a grain-sized intruder is pushed by a spring through a 2D granular material comprised of photoelastic disks in a Couette geometry. We study the intruder dynamics as a function of packing fraction for two
Externí odkaz:
http://arxiv.org/abs/1905.13119
When a solid projectile impacts a granular target, it experiences a drag force and abruptly comes to rest as its momentum transfers to the grains. An empirical drag force law successfully describes the force experienced by the projectile, and the cor
Externí odkaz:
http://arxiv.org/abs/1904.11077
Publikováno v:
Phys. Rev. Lett. 123, 158001 (2019)
We study the jamming phase diagram of sheared granular material using a novel Couette shear set-up with multi-ring bottom. The set-up uses small basal friction forces to apply a volume-conserving linear shear with no shear band to a granular system c
Externí odkaz:
http://arxiv.org/abs/1904.10051
Autor:
Zhao, Yiqiu, Barés, Jonathan, Zheng, Hu, Bester, Cacey Stevens, Xu, Yuanyuan, Socolar, Joshua E. S., Behringer, Robert P.
We investigate the jamming transition in a quasi-2D granular material composed of regular pentagons or disks subjected to quasistatic uniaxial compression. We report six major findings based on experiments with monodisperse photoelastic particles wit
Externí odkaz:
http://arxiv.org/abs/1902.08242
We experimentally study the frictional behavior of a two-dimensional slider pulled slowly over a granular substrate comprised of photoelastic disks. The slider is vibrated at frequencies ranging from 0 to 30 Hz in a direction parallel to sliding. The
Externí odkaz:
http://arxiv.org/abs/1812.06552
Publikováno v:
Phys. Rev. E 99, 052902 (2019)
We report on experiments investigating the dynamics of a slider that is pulled by a spring across a granular medium consisting of a vertical layer of photo-elastic disks. The motion proceeds through a sequence of discrete events, analogous to seismic
Externí odkaz:
http://arxiv.org/abs/1810.12243
Publikováno v:
Phys. Rev. Fluids 4, 084103 (2019)
Spin coating of thin films of viscous liquids on a rotating substrate is a core technological component of semiconductor microchip fabrication. The thinning dynamics is influenced by many physical processes. Specifically temperature gradients affect
Externí odkaz:
http://arxiv.org/abs/1806.10595
Publikováno v:
Phys. Rev. E 99, 040901 (2019)
The local and global dynamics of a sheared granular medium are studied in a model experiment as a function of several macroscopic parameters. We observe that by changing the shear rate or the loading stiffness, the system crackles, with intermittent
Externí odkaz:
http://arxiv.org/abs/1803.06028
Autor:
Dijksman, Joshua A., Kovalcinova, Lenka, Ren, Jie, Behringer, Robert P., Kramar, Miroslav, Mischaikow, Konstantin, Kondic, Lou
Publikováno v:
Phys. Rev. E 97, 042903 (2018)
We carry out a direct comparison of experimental and numerical realizations of the exact same granular system as it undergoes shear jamming. We adjust the numerical methods used to optimally represent the experimental settings and outcomes up to micr
Externí odkaz:
http://arxiv.org/abs/1801.03060
Publikováno v:
Phys. Rev. E 98, 010901 (2018)
We show how a weak force, $f$, enables intruder motion through dense granular materials subject to external mechanical excitations, in the present case stepwise shearing. A force acts on a Teflon disc in a two dimensional system of photoelastic discs
Externí odkaz:
http://arxiv.org/abs/1712.03908