In a large number of experiments it has been shown that plastic deformation
of quasicrystals can occur by a dislocation mechanism. By molecular dynami
cs simulations close to zero temperature we have investigated the applicati
on of shear stress to a three-dimensional model quasicrystal consisting of
Lennard-Jones particles and containing an edge dislocation of the Peierls-N
abarro type. Various visualization methods have been used to trace the disl
ocation line. To determine suitable Burgers vectors we have calculated the
gamma surface, that is the misfit energy obtained by a rigid shift of two p
robe halves along a glide plane. Glide motion of the dislocation on differe
nt glide planes was observed. In its wake a plane of phasonic defects was d
etected.