Abstract
A stepped beam model is developed to predict analytically the natural frequencies and mode shapes at different piezoelectric sensor/actuator locations. The modal solution obtained by including the inertia and stiffness of the surface-bonded piezoelectric materials is applied to investigate the interaction of structure vibration and piezoelectric actuation under closed circuit condition. It is shown that a generalized stiffness from electromechanical coupling is induced by the interaction. The generalized stiffness is a function of structure mode shapes and piezoelectric sensor/actuator locations, thus either softening or stiffening system stiffness is achievable in closed circuit condition. All analytical predictions are validated by modal testing.
| Original language | English |
|---|---|
| Article number | 012 |
| Pages (from-to) | 494-500 |
| Number of pages | 7 |
| Journal | Smart Materials and Structures |
| Volume | 3 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1994 Dec 1 |
All Science Journal Classification (ASJC) codes
- Signal Processing
- Civil and Structural Engineering
- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Electrical and Electronic Engineering