Zobrazeno 1 - 10
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pro vyhledávání: '"Liu, Mario"'
Autor:
Liu, Mario
Having the elastic strain relax while observing energy conservation and entropy production yields a model called hydrodynamics of transient elasticity (HoTE). It interpolates between solid- and fluid-dynamics and provides a broad framework for many s
Externí odkaz:
http://arxiv.org/abs/2410.23921
Publikováno v:
Journal of the Mechanics and Physics of Solids, 100 (2017) 131
A rigorous thermodynamic treatment of partially saturated soils is developed using a minimal number of assumptions. The derivation is carried out in a way that does not require to explicitly track the complex shapes of interfaces between the solid, f
Externí odkaz:
http://arxiv.org/abs/2212.08868
Autor:
Liu, Mario
Publikováno v:
J. Stat. Mech. (2023) 033104
Thermodynamics of superfluids is revisited, clarifying two points. First, the density and pressure distribution for given equilibrium velocities is obtained, with the finding that counter heat currents give rise to a pressure depression and a centrip
Externí odkaz:
http://arxiv.org/abs/2208.09907
Autor:
Liu, Mario
Publikováno v:
EPL, 135 (2021) 36003
Grains are widely assumed to be characterized by a single temperature -- derived either from the configurational entropy, or employing the kinetic theory. Yet granular media do have two temperatures, $T_g$ and $T$, pertaining to the grains and atoms.
Externí odkaz:
http://arxiv.org/abs/2208.09904
Autor:
Jiang, Yimin, Liu, Mario
Publikováno v:
Acta Geotech (2016) 11:519-537
Accounting for elasto-plastic motion in granular media, hypoplasticity is a state-of-the-art constitutive model derived from data accumulated over many decades. In contrast, GSH, a hydrodynamic theory, is derived from general principles of physics, w
Externí odkaz:
http://arxiv.org/abs/1701.06813
Autor:
Jiang, Yimin, Liu, Mario
Publikováno v:
Eur. Phys. J. E (2017) 40: 10
Two approaches exist to account for granular dynamics: The athermal one takes grains as elementary, the thermal one considers the total entropy that includes microscopic degrees of freedom such as phonons and electrons. Discrete element method (DEM),
Externí odkaz:
http://arxiv.org/abs/1604.01534
Autor:
Jiang, Yimin, Liu, Mario
Granular media are considered "athermal", because the grains are too large to display Brownian type thermal fluctuations. Yet being macroscopic, every grain undergoes thermal expansion, possesses a temperature that may be measured with a thermometer,
Externí odkaz:
http://arxiv.org/abs/1407.7224
Autor:
Jiang, Yimin, Liu, Mario
Publikováno v:
Eur. Phys. J. E (2015) 38: 15
Granular solid hydrodynamics (GSH) is a continuum-mechanical theory for granular media, the range of which is shown in this paper. Simple, frequently analytic solutions are related to classic observations at different shear rates, including: (i)~stat
Externí odkaz:
http://arxiv.org/abs/1407.7219
Autor:
Jiang, Yimin, Liu, Mario
Publikováno v:
Acta Mech. 225, 2363 to 2384, 2014
A unified continuum-mechanical theory has been until now lacking for granular media, some believe it could not exist. Derived employing the hydrodynamic approach, GSH is such a theory, though as yet a qualitative one. The behavior being accounted for
Externí odkaz:
http://arxiv.org/abs/1407.7214
Autor:
Jiang, Yimin, Liu, Mario
Publikováno v:
Granular Matter (2013) 15:237- 249
Propotional paths as summed up by the Goldscheider Rule (GR) -- stating that given a constant strain rate, the evolution of the stress maintains the ratios of its components -- is a characteristics of elasto-plastic motion in granular media. Barodesy
Externí odkaz:
http://arxiv.org/abs/1212.3780