Results 11 to 20 of about 64,395 (263)

Thermodynamics of the quasi-static growth of Griffith cracks [PDF]

open access: yesJournal of the Mechanics and Physics of Solids, 1978
Abstract R estrictions on the quasi-static extension, or healing, of Griffith cracks are developed in the framework of irreversible thermodynamics. It is emphasized that thermodynamics requires that (G − 2γ)ι ⩾ 0, where ι is crack speed, G the Irwin energy release rate, and 2γ the work of reversible separation of the surfaces to be fractured ...
openaire   +1 more source

Thermodynamics of a Phase-Driven Proximity Josephson Junction

open access: yesEntropy, 2019
We study the thermodynamic properties of a superconductor/normal metal/superconductor Josephson junction in the short limit. Owing to the proximity effect, such a junction constitutes a thermodynamic system where phase difference, supercurrent ...
Francesco Vischi   +4 more
doaj   +1 more source

Non-equilibrium thermodynamic analysis of quasi-static granular flows

open access: yesActa Physica Sinica, 2014
Granular flow is usually divided into three kinds of flow pattern, namely quasi static flow, slow flow, and rapid flow. The core issue of the research is the constitutive relation. A series of constitutive relations of application value have been received up to now, however, the study on principal theory is insufficient.
null Liu Zhong-Miao   +3 more
openaire   +1 more source

Molecular statistical thermodynamics – A distinct and efficient numerical approach to quasi-static analysis of nanomaterials at finite temperature [PDF]

open access: yesComposites Part B: Engineering, 2012
This paper briefly reviews a distinct and efficient numerical approach to quasi-static analysis of nanomaterials at finite temperature: molecular statistical thermodynamics (MST), especially its various applications and efficiency. Different from molecular dynamics (MD) based on Newton equations, MST is a half-analytical numerical method based on the ...
P. Xiao, J. Wang, F.J. Ke, Y.L. Bai
openaire   +1 more source

Accurate equation of state of rhenium as pressure scale up to 130 GPa and 3200 K

open access: yesAIP Advances, 2022
The equations of states (EOSs) of inert metals are generally used as pressure scales in a high-pressure experiment. However, the thermodynamic model and the method used to constrain the parameters of the EOSs of these metals may cause pressure deviations
Yunting Xian   +4 more
doaj   +1 more source

On the Thermodynamic Origin of Gravitational Force by Applying Spacetime Entanglement Entropy and the Unruh Effect

open access: yesEntropy, 2019
We consider the thermodynamic origin of the gravitational force of matter by applying the spacetime entanglement entropy and the Unruh effect originating from vacuum quantum fluctuations.
Shujuan Liu, Hongwei Xiong
doaj   +1 more source

Preparation of high-capacity magnetic polystyrene sulfonate sodium material based on SI-ATRP method and its adsorption property research for sulfonamide antibiotics

open access: yesBMC Chemistry, 2020
A novel polystyrene sulfonate sodium (PSS) magnetic material was prepared by surface-initiated atom transfer radical polymerization (SI-ATRP). The starting materials were brominated magnetic material as the carrier and macroinitiator, sodium styrene ...
Huachun Liu   +5 more
doaj   +1 more source

Microscopic derivation of an adiabatic thermodynamic transformation [PDF]

open access: yes, 2014
We obtain macroscopic adiabatic thermodynamic transformations by space-time scalings of a microscopic Hamiltonian dynamics subject to random collisions with the environment. The microscopic dynamics is given by a chain of oscillators subject to a varying
Olla, Stefano, Simon, Marielle
core   +7 more sources

Thermodynamic Model of Aerodynamic Sound Hardening Method

open access: yesМеханика машин, механизмов и материалов, 2020
As a result of scientific research, a method of aerodynamic sound hardening (ADH) has been developed and patented, which makes it possible to achieve improved properties of hard alloys by reducing their defectiveness, improving the homogeneity of the ...
Anatoliy N. Jigalov   +2 more
doaj   +1 more source

Statistical forces from close-to-equilibrium media

open access: yesNew Journal of Physics, 2015
We discuss the physical meaning and significance of statistical forces on quasi-static probes in first order around detailed balance for driven media. Exploiting the quasi-static energetics and the structure of (McLennan) steady nonequilibrium ensembles,
Urna Basu   +2 more
doaj   +1 more source

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