Molecular dynamics simulation for ideal strength and elastic modulus of SiC associated with temperature and vacancy defects

C. Wang*, J. Liang, Y. Liu, X. Luan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Tersoff potential function is applied to simulate the ideal strength and elastic constants of ideal SiC crystals and SiC crystals with vacancies in different temperatures by molecular dynamics. The simple tensile model has been adopted and the total systematic energy has been calculated under different temperatures. Nil sen-Martin equation has been used to calculate the mechanical parameters and the ideal strength has been determined. The results show that the vacancy defects and temperature will cause the negative exponential reduction of SiC strength. The elastic modulus decreases quasi-linearly with the rise of temperature and vacancy.

Original languageEnglish
Title of host publicationAdvances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008
Pages55-58
Number of pages4
Publication statusPublished - 2008
Externally publishedYes
EventAdvances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008 - Huangshan, China
Duration: 3 Jun 20088 Jun 2008

Publication series

NameAdvances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008

Conference

ConferenceAdvances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008
Country/TerritoryChina
CityHuangshan
Period3/06/088/06/08

Keywords

  • High temperature
  • Ideal strength
  • Molecular dynamics
  • Vacancy defect

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