Delocalization and Vibration Control of Nearly Periodic Structures using Piezoelectric Networks
Abstract
In this investigation, novel piezoelectric networks have been developed to create additional coupling channels among the substructures and destroy vibration localization. It was found that with proper selection of circuitry elements, the level of vibration localization the nearly periodic structure could be reduced. Parametric studies were carried out to explore the underlining mechanism for delocalization approach. The robustness of the proposed delocalization scheme was also examined, where analysis showed that circuitry imperfections have little effect on the system performance. Through working with the Wright Patterson Research Lab, non-dimensional generic study has been extended to investigate the feasibility of utilizing such a technology on turbo-machinery structures. It was shown that one can achieve the delocalization effect with very reasonable system parameters. Multi-harmonic vibration suppress ion under external forcing scenario has been investigated. A new algorithm was synthesized to analytically decide the piezoelectric damped absorber parameters. It was shown that, with capacitance networking and electrical coupling, this approach can suppress all the spatial harmonics, which cannot be achieved by traditional piezoelectric shunts. At the end of this research program, based on the findings and experience obtained from the study, several challenging issues that need to be addressed in let investigations for the realization of the new idea have been identified.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 18, 2004
- Accession Number
- ADA427108
Entities
People
- Kon-Well Wang
Organizations
- Pennsylvania State University