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| Time-dependent Damage Performance Study of Piezoelectric Ceramics for Vibration Control of Flexible Plates |
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| DOI：10.7643/issn.1672-9242.2022.09.004 |
| KeyWord:flexible plate active vibration control piezoelectric ceramics time-dependent damage inverse piezoelectric effect simulation |
| Author | Institution |
| QIU Zhi-yong |
State Key Laboratory of Dynamics and Control of Mechanical Structures, Nanjing University of Aeronautics & Astronautics, Jiangsu Nanjing , China |
| WANG Ke |
State Key Laboratory of Dynamics and Control of Mechanical Structures, Nanjing University of Aeronautics & Astronautics, Jiangsu Nanjing , China |
| LIN Ye |
Beijing Aerospace Technology Institute, Beijing , China |
| LI Qiang |
Beijing Aerospace Technology Institute, Beijing , China |
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| Abstract: |
| This paper aims to provide a reference for the piezoelectric ceramics participating in the vibration control efficiently for a lengthy time. The time-dependent performance of the piezoelectric ceramics in vibration control of the flexible plate is studied by the test and simulation based on the inverse piezoelectric effect. On the one hand, to realize the vibration control of the flexible plate, an active vibration control system is built, and the time-dependent damage is simulated by means of decreasing the driving voltage of the piezoelectric Ceramics; On the other hand, the dynamic finite element model of the structure is established for response analysis. The time-dependent damage of the piezoelectric ceramics is simulated with the aid of reducing the driving forces produced by the piezoelectric ceramics. When the piezoelectric ceramics are in different degrees of time-dependent damage, the vibration control rates are calculated after the dynamic responses before and after vibration control are measured. Among the rates, when the degree of the time-dependent damage of all piezoelectric ceramics reaches 80%, the vibration control rate of a flexible plate test piece is decreased to 60.4% of the initial vibration control rate. The influence rule of the time-dependent damage of piezoelectric ceramics on vibration control is obtained by evaluating the vibration control rates calculated from the experimental results and simulated results under various conditions. Both the experimental and simulated results indicate that the finite element simulation can be used to simulate the impact on vibration control of flexible plate when the piezoelectric ceramics are subject to the time-dependent damage, and the degree of the time-dependent damage of piezoelectric ceramics can be tested by adjusting its operating voltage. |
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