The stability of the closest packings of Lennard-Jones particles with vacancy sublattices at negative pressures

2008 ◽  
Vol 82 (8) ◽  
pp. 1290-1294
Author(s):  
V. A. Shestakov ◽  
V. I. Kosyakov
Keyword(s):  
Lennard Jones ◽  
Negative Pressures ◽  
The Stability

scholarly journals Buckling analysis of a non-concentric double-walled carbon nanotube

2020 ◽  
Vol 231 (12) ◽  
pp. 5007-5020 ◽  
Author(s):  
Mohammad Malikan ◽  
Victor A. Eremeyev ◽  
Hamid M. Sedighi
Keyword(s):  
Carbon Nanotubes ◽  
Theoretical Study ◽  
Static Stability ◽  
Governing Equations ◽  
Stability Threshold ◽  
Lennard Jones ◽  
The Stability ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Nonlocal Approach

Abstract On the basis of a theoretical study, this research incorporates an eccentricity into a system of compressed double-walled carbon nanotubes (DWCNTs). In order to formulate the stability equations, a kinematic displacement with reference to the classical beam hypothesis is utilized. Furthermore, the influence of nanoscale size is taken into account with regard to the nonlocal approach of strain gradient, and the van der Waals interaction for both inner and outer tubes is also considered based on the Lennard–Jones model. Galerkin decomposition is employed to numerically deal with the governing equations. It is evidently demonstrated that the geometrical eccentricity remarkably affects the stability threshold and its impact is to increase the static stability of DWCNTs.

Stability and Growth of Lennard-Jones Strained Layer Superlattice Interfaces

1984 ◽  
Vol 37 ◽  
Author(s):  
Brian W. Dodson
Keyword(s):  
Monte Carlo ◽  
Model System ◽  
Interatomic Potentials ◽  
Growth Processes ◽  
Strained Layer ◽  
Monte Carlo Techniques ◽  
Lennard Jones ◽  
Strained Layer Superlattice ◽  
The Stability

AbstractIn the context of a model system whose atoms interact via Lennard-Jones (LJ) interatomic potentials, we have studied the stability of an initially perfect strained layer superlattice interface (SLS) and the process of growth of a mismatched layer on a substrate using Monte Carlo techniques. An initially perfect SLS interface is found to be metastable up to 12% mismatch, a much higher value than is found on real SLS systems. In contrast, we find that, within the limitations of the calculations, a perfect SLS interface cannot be grown in an LJ system. The implications of these results for understanding SLS growth processes is discussed.

MODEL OF BINDING ALPHA-PARTICLES AND APPLICATIONS TO SUPERHEAVY ELEMENTS

2005 ◽  
Vol 14 (04) ◽  
pp. 635-643 ◽  
Author(s):  
K. A. GRIDNEV ◽  
S. YU. TORILOV ◽  
D. K. GRIDNEV ◽  
V. G. KARTAVENKO ◽  
W. GREINER
Keyword(s):  
Pair Potential ◽  
Total Potential Energy ◽  
Binding Energies ◽  
Alpha Particles ◽  
Superheavy Nuclei ◽  
Lennard Jones ◽  
Total Potential ◽  
Stability Island ◽  
The Stability ◽  
Good Agreement

A model of nuclear matter built from alpha-particles is proposed. In this model, nuclei possess the molecular-like structure. Analyzing the numbers of bonds, one gets the formula for the binding energy of a nucleus. The structure is determined by the minimum of the total potential energy, where interaction between alpha-particles is pairwise and the pair-potential is of Lennard–Jones type. The calculated binding energies show a good agreement with experiment. Calculations predict the stability island for superheavy nuclei around Z=120.

Cavitation and crystallization in a metastable Lennard-Jones liquid at negative pressures and low temperatures

2011 ◽  
Vol 135 (5) ◽  
pp. 054512 ◽  
Author(s):  
Vladimir G. Baidakov ◽  
Konstantin S. Bobrov ◽  
Aleksey S. Teterin
Keyword(s):  
Low Temperatures ◽  
Lennard Jones ◽  
Negative Pressures

Cavitation and the stability region of liquid lead at negative pressures: Molecular dynamics study

2005 ◽  
Vol 50 (11) ◽  
pp. 570-576 ◽  
Author(s):  
T. T. Bazhirov ◽  
G. É. Norman ◽  
V. V. Stegailov
Keyword(s):  
Molecular Dynamics ◽  
Stability Region ◽  
Liquid Lead ◽  
Negative Pressures ◽  
The Stability

The mechanical properties of perfect crystals II. The stability and mode of fracture of highly stressed ideal crystals

1972 ◽  
Vol 330 (1582) ◽  
pp. 309-317 ◽  
Keyword(s):  
Sodium Chloride ◽  
Strain Curve ◽  
Lennard Jones Potential ◽  
Stability Criteria ◽  
Stress Strain Curve ◽  
Jones Potential ◽  
Lennard Jones ◽  
The Stability ◽  
Highly Strained ◽  
The Ideal

The Born stability criteria are applied to variously elastically deformed perfect crystals of argon, represented by a Lennard-Jones potential, and sodium chloride, represented by a Born-Mayer potential. It is shown that when highly strained in tension argon and sodium chloride crystals become unstable before the maximum in the ideal stress-strain curve is reached. The consequent reductions in our previous estimates of the ideal tensile strength (part I) are small (< 10 %) except for unconstrained tension of argon (20 %).

In Vitro Evaluation of Evacuated Blood Collection Tubes as a Closed-Suction Surgical Drain Reservoir

2018 ◽  
Vol 54 (1) ◽  
pp. 30-35
Author(s):  
Brian Heiser ◽  
E.B. Okrasinski ◽  
Rebecca Murray ◽  
Kelly McCord
Keyword(s):  
Blood Collection ◽  
Expiration Date ◽  
Closed Suction ◽  
Volume Curve ◽  
Negative Pressures ◽  
The Stability ◽  
Surgical Drain ◽  
In Vitro Performance ◽  
Blood Collection Tubes

ABSTRACT The initial negative pressures of evacuated blood collection tubes (EBCT) and their in vitro performance as a rigid closed-suction surgical drain (CSSD) reservoir has not been evaluated in the scientific literature despite being described in both human and veterinary texts and journals. The initial negative pressures of EBCT sized 3, 6, 10, and 15 mL were measured and the stability of the system monitored. The pressure-to-volume curve as either air or water was added and maximal filling volumes were measured. Evacuated blood collection tubes beyond the manufacture’s expiration date were evaluated for initial negative pressures and maximal filling volumes. Initial negative pressure ranged from −214 mm Hg to −528 mm Hg for EBCT within the manufacturer’s expiration date. Different pressure-to-volume curves were found for air versus water. Optimal negative pressures of CSSD are debated in the literature. Drain purpose and type of exudates are factors that should be considered when deciding which EBCT size to implement. Evacuated blood collection tubes have a range of negative pressures and pressure-to-volume curves similar to previously evaluated CSSD rigid reservoirs. Proper drain management and using EBCT within labeled expiration date are important to ensure that expected negative pressures are generated.

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