Arun K Subramaniyan and C T Sun 2008 Nanotechnology 19 285706 doi:10.1088/0957-4484/19/28/285706
Engineering molecular mechanics: an efficient static high temperature molecular simulation technique
Arun K Subramaniyan and C T Sun1
Show affiliationsInspired by the need for an efficient molecular simulation technique, we have developed engineering molecular mechanics (EMM) as an alternative molecular simulation technique to model high temperature (T>0 K) phenomena. EMM simulations are significantly more computationally efficient than conventional techniques such as molecular dynamics simulations. The advantage of EMM is achieved by converting the dynamic atomistic system at high temperature (T>0 K) into an equivalent static system. Fundamentals of the EMM methodology are derived using thermal expansion to modify the interatomic potential. Temperature dependent interatomic potentials are developed to account for the temperature effect. The efficiency of EMM simulations is demonstrated by simulating the temperature dependence of elastic constants of copper and nickel and the thermal stress developed in a confined copper system.
- PACS
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62.25.-g Mechanical properties of nanoscale systems
65.80.+n Thermal properties of small particles, nanocrystals, nanotubes
- Subjects
- Dates
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Issue 28 (16 July 2008)
Received 4 March 2008, in final form 5 May 2008
Published 3 June 2008
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Engineering molecular mechanics: an efficient static high temperature molecular simulation technique
Arun K Subramaniyan and C T Sun 2008 Nanotechnology 19 285706
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