Classical force fields and methods of molecular dynamics

  • William A. Goddard

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The practical size and time scale for QM based MD (QM-MD or AIMD) is 200 atoms for 50 ps. But we want to do MD on systems with 100,000 to 3 million atoms for 100’s of ns. Thus the forces from QM must be replaced for analytic functions that depend directly on distances and angles. The parameters could be trained with QM but better is to develop rules that lead to an acceptable accuracy for wide classes of materials. Thus we developed DREIDING for main group elements (columns 14–17) and later UFF for all elements (up to Lr, Z=103) aimed at inorganic materials. These are aimed at structures but not bond breaking. For bond breaking we developed the ReaxFF and RexPoN FF described in chapter 47.

Original languageEnglish
Title of host publicationSpringer Series in Materials Science
PublisherSpringer Science and Business Media Deutschland GmbH
Pages1063-1072
Number of pages10
DOIs
Publication statusPublished - 1 Jan 2021
Externally publishedYes

Publication series

NameSpringer Series in Materials Science
Volume284
ISSN (Print)0933-033X
ISSN (Electronic)2196-2812

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