Using An Extended Tersoff Interatomic Potential to Analyze The Static-Fatigue Strength of SiO_2 under Atmospheric Influence

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概要

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• Calculations of SiO_2 static-fatigue strength are used to show that the strength-degradation behavior of the material under the influence of the ambient atmosphere can be analyzed using an interatomic potential which is based on the Tersoff potential but extended to take charge transfer effects into account. The force-elongation curves of the Si-O interatomic bonds of the SiO_2 are calculated with and without H_2O in the atmosphere. Based on these curves, crack propagation behavior is analyzed, and calculated results are shown to correspond well with experimental results. Moreover, the calculated values of the strength decrease caused by the H_2O also show fair agreement with the experimental values.

• 一般社団法人日本機械学会の論文
• 1996-07-15

著者

• Yasukawa Akio

  Mechanical Engineering Research Laboratory Hitachi Ltd .

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• Using An Extended Tersoff Interatomic Potential to Analyze The Static-Fatigue Strength of SiO_2 under Atmospheric Influence

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