Abstract
The micro-vibration monitoring and control of vibration-sensitive precision facilities are important and the accurate measurement of micro-vibrations is necessary. The piezoelectric sensors such as piezoelectric shell structure have better electrical-mechanical coupling properties and less effect of bulk and weight. This paper studies the response characteristics of an interceptive spherical piezoelectric shell under stochastic boundary micro-vibration excitations. The equation for electric potential is integrated, and the displacement is transformed and expanded to yield the ordinary differential equations for the shell. The frequency-response function, power spectral density and correlation function matrices of the shell system response are derived. Then the root-mean-square displacement, stress and electric potential of the piezoelectric shell can be calculated. The numerical results are given to illustrate the stochastic electrical-mechanical coupling properties and the relation between boundary electric potential responses and micro-vibration excitations.
| Original language | English |
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| Title of host publication | 2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) |
| Number of pages | 4 |
| Publisher | IEEE |
| Publication date | 2011 |
| ISBN (Print) | 9781467310789 |
| DOIs | |
| Publication status | Published - 2011 |
| Externally published | Yes |
| Event | 2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) - Shenzhen, China Duration: 9 Dec 2011 → 11 Dec 2011 |
Conference
| Conference | 2011 Symposium on Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA) |
|---|---|
| Country/Territory | China |
| City | Shenzhen |
| Period | 09/12/2011 → 11/12/2011 |
Keywords
- Engineering
- Physics
- Piezoelectric spherical shell
- Micro-vibration excitation
- Stochastic response