IMECH-IR  > 力学所知识产出(1956-2008)
Molecular dynamics simulation of the temperature effects on nanoindentation
Chen SD; Ke FJ(柯孚久); Bai YL(白以龙)
Source PublicationMultiscaling in Applied Science and Emerging Technology, Fundamentals and Applications in Mesomechanics: Proceedings of the Sixth International Conference for Mesomechanics
2004
Conference NameMultiscaling in Applied Science and Emerging Technology; Fundamentals and Applications in Mesomechanics:Proceedings of the Sixth International Conference for Mesomechanics
Conference DateMay 31, 2004 - June 4, 2004
Conference PlacePatras, Greece
AbstractThree dimensional molecular dynamics (MD) simulation was performed to investigate the effect of temperature on nanoindentation. Results indicate that the hardness fluctuates with increasing penetration depth in the case of shallow nanoindentation. This implies that it is insufficient to represent the effect of temperature by the hardness only at specific depth, and a hardness-depth curve is needed. In order to get rid of the fluctuation caused by random thermal motion of atoms, integral hardness was used. It is found that the temperature effect on hardness can be clearly revealed by the integral hardness-depth curves. The hardness and Young's modulus decrease with increasing temperature. Such a softening behavior is similar to experiment results[23] and a MD numerical results[8], which gave the data at a single depth. In addition, W p/Wt, H/E, and hf/hmax at different temperature are also investigated. Results show that these ratios are not sensitive to temperature.
KeywordIntegral Hardness Modulus Nanohardness Nanoindentation
ISBN960881040X
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60273
Collection力学所知识产出(1956-2008)
Recommended Citation
GB/T 7714
Chen SD,Ke FJ,Bai YL. Molecular dynamics simulation of the temperature effects on nanoindentation[C],2004.
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