Abstract
Molecular dynamics simulations were carried out to find the underlying
structures of a Magnetorheological (MR) fluid while taking into
account dipolar forces, viscous drag, and the Brownian force. Three
different structures were found: the bct lattice, chains, and a liquid
state. The conditions under which these structures are found is based
on two parameters A and B which are the ratios of the dipolar force to
the viscous drag force and the Brownian force to the dipolar force
respectively.