Frequency veering and mode degeneration of a rectangular disc |
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| Authors: | Francois Brouet Jens Twiefel Jörg Wallaschek |
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| Institution: | Leibniz Universität Hannover, Institut für Dynamik und Schwingungen, Appelstr. 11, 30167 Hannover, Germany |
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| Abstract: | In typical applications as ultrasonic welding horns, the oscillators are designed to be driven in the longitudinal mode. Modal interactions occur at critical aspect ratios, resulting in a poor uniformity of the output surface and assessing the geometry as critical. In this contribution, a method is presented for a simple rectangular disc how to eliminate the modal interaction and decouple the longitudinal mode from other modes. (© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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