NEW RIGID BODY EQUATIONS OF MOTION FOR MOLECULAR DYNAMICS

被引:1
|
作者
Perram, John W. [1 ]
Petersen, Henrik G. [1 ]
机构
[1] Odense Univ, Dept Math & Comp Sci, DK-5230 Odense M, Denmark
关键词
Rigid body; rotation; lagrangian; hamiltonian; molecular dynamics;
D O I
10.1080/08927028808080946
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We derive new constrained equations of motion for the principal axis vectors of a rotating rigid body. The equations of motion in both Lagrangian and Hamiltonian form arc derived and, for a simple example. are shown to be equivalent to equations obtained using generalized coordinates. Methods for correcting numerical instabilities are given and the method is ilustrated for two small scale simulations of a model for propane.
引用
收藏
页码:239 / 247
页数:9
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