Zobrazeno 1 - 10
of 780
pro vyhledávání: '"O'Hern, C."'
Publikováno v:
Phys. Rev. E 107 (2023) 054903
Strain-controlled isotropic compression gives rise to jammed packings of repulsive, frictionless disks with either positive or negative global shear moduli. We carry out computational studies to understand the contributions of the negative shear modu
Externí odkaz:
http://arxiv.org/abs/2302.02545
Autor:
Cheng, Y., Treado, J. D., Lonial, B., Habdas, P., Weeks, E. R., Shattuck, M. D., O'Hern, C. S.
Publikováno v:
Soft Matter 18 (2022) 8071
Numerous experimental and computational studies show that continuous hopper flows of granular materials obey the Beverloo equation that relates the volume flow rate $Q$ and the orifice width $w$: $Q \sim (w/\sigma_{\rm avg}-k)^{\beta}$, where $\sigma
Externí odkaz:
http://arxiv.org/abs/2208.05581
Publikováno v:
Phys. Rev. E 104, 014901 (2021)
We investigate the mechanical response of jammed packings of circulo-lines, interacting via purely repulsive, linear spring forces, as a function of pressure $P$ during athermal, quasistatic isotropic compression. Prior work has shown that the ensemb
Externí odkaz:
http://arxiv.org/abs/2105.11648
Autor:
Tuckman, P. J., VanderWerf, K., Yuan, Y., Zhang, S., Zhang, J., Shattuck, M. D., O'Hern, C. S.
Publikováno v:
Soft Matter 16 (2020) 9443
We investigate the mechanical response of packings of purely repulsive, frictionless disks to quasistatic deformations. The deformations include simple shear strain at constant packing fraction and at constant pressure, "polydispersity" strain (in wh
Externí odkaz:
http://arxiv.org/abs/2008.01895
Autor:
Xiong, F., Wang, P., Clark, A. H., Bertrand, T., Ouellette, N. T., Shattuck, M. D., O'Hern, C. S.
Publikováno v:
Granular Matter 21 (2019) 109
We compare the structural and mechanical properties of mechanically stable (MS) packings of frictional disks in two spatial dimensions (2D) generated with isotropic compression and simple shear protocols from discrete element modeling (DEM) simulatio
Externí odkaz:
http://arxiv.org/abs/1906.00438
Publikováno v:
Phys. Rev. E 96, 062902 (2017)
We focus on the response of mechanically stable (MS) packings of frictionless, bidisperse disks to thermal fluctuations, with the aim of quantifying how nonlinearities affect system properties at finite temperature. Packings of disks with purely repu
Externí odkaz:
http://arxiv.org/abs/1710.01438
Publikováno v:
Soft Matter 13 (2017) 4370
Key features of the mechanical response of amorphous particulate materials, such as foams, emulsions, and granular media, to applied stress are determined by the frequency and size of particle rearrangements that occur as the system transitions from
Externí odkaz:
http://arxiv.org/abs/1705.04375
Publikováno v:
Phys. Rev. E 93, 012901 (2016)
We propose a theoretical framework for predicting the protocol dependence of the jamming transition for frictionless spherical particles that interact via purely repulsive contact forces. We study isostatic jammed disk packings obtained via two proto
Externí odkaz:
http://arxiv.org/abs/1506.05041
Using a previously developed experimental method to reduce friction in mechanically stable packings of disks, we find that frictional packings form tree-like structures of geometrical families that lie on reduced dimensional manifolds in configuratio
Externí odkaz:
http://arxiv.org/abs/1505.07514
Publikováno v:
J. Chem. Phys. 143 (2015) 054501
The critical cooling rate $\mathcal{R}_c$, below which liquids crystallize upon cooling, characterizes the glass-forming ability (GFA) of the system. While pure metals are typically poor glass formers with $\mathcal {R}_c>10^{12}\, {\rm K/s}$, specif
Externí odkaz:
http://arxiv.org/abs/1505.06771