Magnetostatic Fields

Magnetic Shielding

By changing the permeability of the rectangular shaped magnetic material one can see how the distribution of the magnetic flux lines is influenced by the material. The flux lines are broken along the magnetic material border line resulting in a reduction of the magnetic field inside the shielded volume.

(1) The symbols "x" and "o" shown in red do denote impressed currents of opposite directions in conductors of infinite length oriented perpendicular to the drawing plane. The positions of these current sources can be changed by dragging with the mouse.
(2) Click on the red triangles to change the value of the magnetic permeability of the material.

Attention: The magnetic flux lines are calculated using the finite element method. Because the computations are very time-consuming it is necessary to run the applet on a fast computer (>800MHz) in order to get good performance and high responsivness. We will improve the overall-performance of this applet in a future release by further optimizing the algorithms.