Target of this work is the analysis of a concertina motion with the Method of finite elements. In previous experimental
studies the behaviour of a cylindrical worm-like structure consisting of a ferrofluid in a silicon-hull is investigated. This
structure is placed in a tube, above and below the tube coils are placed. The coils are periodically turned on and off.
Because of the resulting magnetic fields the worm structure moves similar to concertina motion of snakes. The forces
on the structure resulting from the magnetic fields are investigated by FEM-models and analytic functions in previous
works. These analyses are the basis for the mechanical FEM-model in this work. The developed FEM-model is compared
with experimental results. The resulting movement-function can be described by a linear function, superimposed by a
sinusoidal function. After the modelling process the dependence of the movement of the structure from the thickness of
the worm, the diameter of the surrounding tube, the coefficient of friction between worm and tube and the material
properties of the worm was investigated. An exponential function between coefficient of friction and the speed of the
worm movement was found.