Optimizing Piezoelectric Material Location and Size for Multiple-Mode Vibration Reduction of Turbomachinery Blades
- Univ. of Central Florida, Orlando, FL (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Modern turbomachinery blades have extremely low inherent damping, which can lead to high transient vibrations and failure through high-cycle fatigue. Smart materials enable vibration reduction while meeting strict blade requirements such as weight and aerodynamic efficiency. In particular, piezoelectric-based vibration reduction offers the potential to reduce vibration semi-actively while simultaneously harvesting sufficient energy to power the implementation. The placement and the size of the piezoelectric material is critical to the vibration reduction capabilities of the system. Furthermore, the implementation should target multiple vibration modes. In this study, we develop a procedure to optimize electromechanical coupling across multiple vibration modes for a representative turbomachinery blade with surface-mounted piezoelectric patches. Experimental validation demonstrates good coupling across three targeted modes with a single piezoelectric patch. Placing the piezoelectric material in regions of high signed strain energy for all targeted modes enables vibration reduction across all of the targeted modes.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE; US Department of the Navy, Office of Naval Research (ONR)
- Grant/Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1670190
- Report Number(s):
- SAND--2020-6608J; 686984
- Journal Information:
- Journal of Vibration and Acoustics, Journal Name: Journal of Vibration and Acoustics Journal Issue: 2 Vol. 143; ISSN 1048-9002
- Publisher:
- The American Society of Mechanical Engineers (ASME)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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