Mechanical & Materials Engineering, Department of
Date of this Version
2012
Citation
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 59, no. 8, Au gust 2012, PP. 1774-1780; DOI: http://dx.doi.org/10.1109/TUFFC.2012.2381
Abstract
We study shear-horizontal free vibrations of an elastic cylinder with an oblate elliptical cross section and a traction-free surface. Exact vibration modes and frequencies are obtained. The results show the existence of thickness-shear and thickness-twist modes. The energy-trapping behavior of these modes is examined. Trapped modes are found wherein the vibration energy is largely confined to the central portion of the cross section and little vibration energy is found at the edges. It is also shown that face-shear modes are not allowed in such a cylinder. The results are useful for the understanding of the energy trapping phenomenon in contoured acoustic wave resonators.
Comments
Copyright 2012 IEEE