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Kim, Sung Youb
Computational Advanced Nanomechanics (CAN) Lab
Research Interests
  • Computational Mechanics
  • Nanomechanics
  • Molecular Dynamics
  • FEM

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An introductory overview of action-derived molecular dynamics for multiple time-scale simulations

Cited 14 times inthomson ciCited 15 times inthomson ci
Title
An introductory overview of action-derived molecular dynamics for multiple time-scale simulations
Author
Lee, In-HoKim, Sung YoubJun, Sukky
Keywords
Action-derived molecular dynamics; Activation energy; Infrequent event; Least action principles
Issue Date
2004-05
Publisher
ELSEVIER SCIENCE SA
Citation
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, v.193, no.17-20, pp.1633 - 1644
Abstract
In this introductory paper, we briefly review the action-derived molecular dynamics (ADMD) that has recently been developed for the atomistic simulation of infrequent-event systems such as surface diffusion process and complex molecular formation. The method is specifically designed to find a dynamical trajectory when the final atomic configuration is given as a priori. ADMD has its theoretical foundation in the least action principles. According to the formulation, the most probable dynamical trajectory connecting the initial and final atomic configurations, is determined through minimizing an appropriate object function that is derived from the classical action by imposing dynamical conditions as required as the conservations of total energy. It thus enables us to find the actual dynamical path of the systems, which is a distinguishing feature compared with other similar methods such as the nudged elastic band method. In this paper, we present our recent simulation results using ADMD, as well as an introduction to its theoretical background and enhanced algorithms.
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DOI
10.1016/j.cma.2003.12.043
ISSN
0045-7825
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