Regensburg 2016 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 28: Poster - Complex Fluids, Granular Matter, Glasses

DY 28.8: Poster

Dienstag, 8. März 2016, 18:15–21:00, Poster C

Measuring the buckling of a chain of permanent magnets under load — •Lucas Bartosch and Reinhard Richter — Experimentalphysik 5, Universität Bayreuth

A one-dimensional chain of spherical neodymium-iron-boron magnets responds to mechanical loadings in a manner reminiscent of an elastic rod, which was recently described by introducing an effective magnetic bending stiffness [1]. We are investigating the deformation of such a chain resting on a plain by means of images recorded by a digital camera. The positions of the magnets are extracted utilizing OpenCV for image processing. The distance between the two endpoints of the chain is manipulated via a computer controlled stepper motor. Moreover, the lateral force is recorded with a magnetic insensitive force gauge. We compare our quantitative results with the model proposed in [1].

1. D. Vella, E. du Pontavice, C. L. Hall and A. Goriely, Proc. R. Soc. A 470, 20130609 (2013).