Influence of curved piezo-actuator parameters on lower-order shell mode coupling

Venkata R. Sonti; James D. Jones

doi:10.1117/12.174223

1 May 1994 Influence of curved piezo-actuator parameters on lower-order shell mode coupling

Venkata R. Sonti, James D. Jones

Proceedings Volume 2192, Smart Structures and Materials 1994: Mathematics and Control in Smart Structures; (1994) https://doi.org/10.1117/12.174223
Event: 1994 North American Conference on Smart Structures and Materials, 1994, Orlando, FL, United States

Abstract

Several features of the analytical curved piezo-actuator model (in-phase and out-of-phase) are presented including the influence of actuator size, location, thickness, and shell aspect ratio on the excitation of shell modes. It is shown that in-phase driven piezo-actuators are better than out-of-phase driven actuators for exciting low circumferential order cylindrical shell modes. The angular wrap, angular location, and the shell aspect ratio are important factors which influence the shell response. Also, the coexistence of in-plane (theta) line force and pressure load in the in-phase model naturally cancel at certain high circumferential (n) modes so that no extra efforts need to be expended in suppressing them. The simplicity of the problem depends on the shell aspect ratio. It is more complicated for shells with aspect ratios between 3 and 7. The reason being that several medium axial (m) order modes coexist close to the excitation frequency and also several circumferential orders are resonant.

Citation Download Citation

Venkata R. Sonti and James D. Jones "Influence of curved piezo-actuator parameters on lower-order shell mode coupling", Proc. SPIE 2192, Smart Structures and Materials 1994: Mathematics and Control in Smart Structures, (1 May 1994); https://doi.org/10.1117/12.174223

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