摘要
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.
| 原文 | English |
|---|---|
| 文章編號 | 012 |
| 頁（從 - 到） | 494-500 |
| 頁數 | 7 |
| 期刊 | Smart Materials and Structures |
| 卷 | 3 |
| 發行號 | 4 |
| DOIs | |
| 出版狀態 | Published - 1994 12月 1 |
All Science Journal Classification (ASJC) codes
- 訊號處理
- 土木與結構工程
- 原子與分子物理與光學
- 材料科學(全部)
- 凝聚態物理學
- 材料力學
- 電氣與電子工程