Locally periodic Timoshenko rod: Experiment and theory

• DOI: 10.1121/1.1880732
• Publication Date: 2005-05-02T13:34:49Z
• Authors: A. Dı́az-de-Anda; A. Pimentel; J. Flores; A. Morales; L. Gutiérrez; R. A. Méndez-Sánchez
• Keywords: Timoshenko beam theory; Transfer matrix; Transfer-matrix method (optics); Mode (computer interface)

The flexural vibrations of a locally periodic rod, which consists N unit cells, are discussed both from the experimental and theoretical points view. Timoshenko’s beam theory transfer matrix method used to calculate normal-mode frequencies amplitudes. values then compared with ones, obtained using an electromagnetic acoustic transducer (EMAT). Good agreement between numerical results measurements is obtained. It shown that as grows, band spectrum emerges.