Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Silbert, Leonardo E."'
Autor:
Monti, Joseph M., Srivastava, Ishan, Silbert, Leonardo E., Santos, Andrew P., Lechman, Jeremy B., Grest, Gary S.
We perform a structural analysis of large scale jammed packings of monodisperse, frictionless and frictional spheres to elucidate structural signatures of the static structure factor in the low-to-intermediate wavenumber (q) region. We employ discret
Externí odkaz:
http://arxiv.org/abs/2410.18030
Granular matter takes many paths to pack. Gentle compression, compaction or repetitive tapping can happen in natural and industrial processes. The path influences the packing microstructure, and thus macroscale properties, particularly for frictional
Externí odkaz:
http://arxiv.org/abs/2310.16114
Autor:
Monti, Joseph M., Srivastava, Ishan, Silbert, Leonardo E., Lechman, Jeremy B., Grest, Gary S.
Static structure factors are computed for large-scale, mechanically stable, jammed packings of frictionless spheres (three dimensions) and disks (two dimensions) with broad, power-law size dispersity characterized by the exponent $-\beta$. The static
Externí odkaz:
http://arxiv.org/abs/2306.12499
Autor:
Monti, Joseph M., Clemmer, Joel T., Srivastava, Ishan, Silbert, Leonardo E., Grest, Gary S., Lechman, Jeremy B.
Due to significant computational expense, discrete element method simulations of jammed packings of size-dispersed spheres with size ratios greater than 1:10 have remained elusive, limiting the correspondence between simulations and real-world granul
Externí odkaz:
http://arxiv.org/abs/2208.07263
The flow of frictionless granular particles is studied with stress-controlled discrete element modeling simulations for systems varying in size from 300 to 100,000 particles. The volume fraction and shear stress ratio $\mu$ are relatively insensitive
Externí odkaz:
http://arxiv.org/abs/2201.03680
Autor:
Srivastava, Ishan, Roberts, Scott A., Clemmer, Joel T., Silbert, Leonardo E., Lechman, Jeremy B., Grest, Gary S.
Publikováno v:
Phys. Rev. Research 3, 032042 (2021)
By generalizing a geometric argument for frictionless spheres, a model is proposed for the jamming density $\phi_J$ of mechanically stable packings of bidisperse, frictional spheres. The monodisperse, $\mu_s$-dependent jamming density $\phi_J^{\mathr
Externí odkaz:
http://arxiv.org/abs/2105.00977
Publikováno v:
Soft Matter, 2022, 18, 735-743
Flowing granular materials often abruptly arrest if not driven by sufficient applied stresses. Such abrupt cessation of motion can be economically expensive in industrial materials handling and processing, and is significantly consequential in interm
Externí odkaz:
http://arxiv.org/abs/2104.00787
Publikováno v:
Phys. Rev. Materials 4, 115602 (2020)
Mechanically stable sphere packings are generated in three-dimensional space using the discrete element method, which span a wide range in structural order, ranging from fully amorphous to quasi-ordered structures, as characterized by the bond orient
Externí odkaz:
http://arxiv.org/abs/2008.09762
Autor:
Santos, A. P., Bolintineanu, Dan S., Grest, Gary S., Lechman, Jeremy B., Plimpton, Steven J., Srivastava, Ishan, Silbert, Leonardo E.
Publikováno v:
Phys. Rev. E 102, 032903 (2020)
Intuition tells us that a rolling or spinning sphere will eventually stop due to the presence of friction and other dissipative interactions. The resistance to rolling and spinning/twisting torque that stops a sphere also changes the microstructure o
Externí odkaz:
http://arxiv.org/abs/2007.10860
Publikováno v:
Journal of Fluid Mechanics (2021), vol. 907, A18
This study examines the flow of dense granular materials under external shear stress and pressure using discrete element method simulations. In this method, the material is allowed to strain along all periodic directions and adapt its solid volume fr
Externí odkaz:
http://arxiv.org/abs/1912.04491