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2017 | 131 | 2 | 318-323
Article title

Theoretical Predictions of Lattice Parameters and Mechanical Properties of Pentaerythritol Tetranitrate under the Temperature and Pressure by Molecular Dynamics Simulations

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Abstracts
EN
Molecular dynamics simulations with condensed-phase optimized molecular potentials for atomistic simulation studies force field are performed to investigate the structure, equation of state, and mechanical properties of high energetic material pentaerythritol tetranitrate. The equilibrium structural parameters, pressure-volume relationship and elastic constants at ambient conditions agree excellently with experiments. In addition, fitting the pressure-volume data to the Birch-Murnaghan or Murnaghan equation of state, the bulk modulus B₀ and its first pressure derivative B'₀ are obtained. Moreover, the elastic constants are calculated in the pressure range of 0-10 GPa at room temperature and in the temperature range of 200-400 K at the standard pressure, respectively. By the Voigt-Reuss-Hill approximation, the mechanical properties such as bulk modulus B, shear modulus G, and the Young modulus E are also obtained successfully. The predicted physical properties under temperature and pressure can provide powerful guidelines for the engineering application and further experimental investigations.
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Year
Volume
131
Issue
2
Pages
318-323
Physical description
Dates
published
2017-02
received
2016-03-16
(unknown)
2017-01-17
Contributors
author
  • State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, China
  • College of Science, East China University of Technology, Nanchang, 330013, China
  • Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang, 621900, China
author
  • College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 400047, China
author
  • College of Science, East China University of Technology, Nanchang, 330013, China
author
  • Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang, 621900, China
author
  • College of Science, East China University of Technology, Nanchang, 330013, China
author
  • Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang, 621900, China
References
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Document Type
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv131n220kz
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