Zhang, G.Q., Xe, D.P., Wang, D.O., et al. (2008) Structural Transition of Nanometer SiO2 Powders under High Pressure and High Temperature. Journal of Jilin University, 46, 311-313.

has been cited by the following article:

• TITLE: Molecular Dynamics Simulation of Mechanical Properties for α-SiO2 Crystal

  AUTHORS: Jierong Guo, Lei Ma

  KEYWORDS: Mechanical Properties, Tensile, Molecular Dynamics

  JOURNAL NAME: Journal of Modern Physics, Vol.10 No.6, April 26, 2019

  ABSTRACT: The mechanical properties of the α-SiO2 crystal are studied by molecular dynamics method with Tersoff potential function. The results show that the α-SiO2 crystal goes through elastic deformation, plastic deformation and fracture deformation in the process of uniaxial loading at room temperature. The α-SiO2 is from crystal phase transformation to amorphous phase in plastic deformation. And also by studying the influence of temperature on the tensile mechanical properties of α-SiO2, it finds that the yield strength and elastic modulus of α-SiO2 decrease gradually as the temperature increases. Moreover, the higher the temperature, the lower the fracture stress and fracture strain; the α-SiO2 crystal is easy to be broke under high temperature uniaxial loading. And it also finds that the crack is able to decrease the mechanical properties of α-SiO2 crystal.