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EMD is able to analyze the dynamic behavior of gear drives, for example, a planetary gear. The angle of the rotation-dependent rigidity of the meshing engagement may be used for the analysis of any bending and torsion-elastic rotor systems.

The forces of the meshing are applied as reaction forces between the gears and can stimulate vibrations of the associated structure. Due to continuous change of the torsional stiffness in the tooth engagement higher harmonic excitations can be triggered.