TY - JOUR
T1 - Design Considerations for Optimal Absorption of Energy from a Vibration Source by an Array of Harvesters
AU - Sriramdas, Rammohan
AU - Rastogi, Shreevar
AU - Pratap, Rudra
N1 - Funding Information:
The current work is supported by National Program on Micro and Smart Systems grant through the facilities created at Centre for Nano Science and Engineering, Indian Institute of Science. Rammohan expresses earnest gratitude to Mr. Vamsy Godthi for sharing his expertise in experimental setup with vibrometer and several valuable discussions during the course of this research work.
Publisher Copyright:
© 2016 by De Gruyter 2016.
PY - 2016
Y1 - 2016
N2 - Dynamic vibration absorption is a passive technique for suppressing unintended vibrations. Optimal absorption of energy from a vibration source entails the determination of absorber parameters such as resonant frequency and damping. In the present work, we propose a method to obtain these parameters for a generic case of large number of identical vibration absorbers placed on a vibration source. We discuss an iterative procedure to find the optimum absorber resonant frequency and damping by minimizing the total energy absorbed by the system. We also analyse the influence of damping of the entire set of absorbers on the total energy absorbed and the effect of the absorber mass on the bandwidth of absorption. The proposed method is verified by analysing the response of a set of cantilever absorber beams placed on a vibrating cantilever plate. The resonant frequencies of the system with different number of absorbers are verified experimentally. We identify, using our method, the absorber mass, resonant frequency and damping of the absorber at which significant amount of energy supplied to the system flows into absorbers. A potential application of this method in the context of energy harvesting is the design of harvesters for a given vibration source. We emphasize through our work that monitoring energies in the system and optimizing them is both rational and vital for designing multiple harvesters that absorb energy from a given vibration source optimally.
AB - Dynamic vibration absorption is a passive technique for suppressing unintended vibrations. Optimal absorption of energy from a vibration source entails the determination of absorber parameters such as resonant frequency and damping. In the present work, we propose a method to obtain these parameters for a generic case of large number of identical vibration absorbers placed on a vibration source. We discuss an iterative procedure to find the optimum absorber resonant frequency and damping by minimizing the total energy absorbed by the system. We also analyse the influence of damping of the entire set of absorbers on the total energy absorbed and the effect of the absorber mass on the bandwidth of absorption. The proposed method is verified by analysing the response of a set of cantilever absorber beams placed on a vibrating cantilever plate. The resonant frequencies of the system with different number of absorbers are verified experimentally. We identify, using our method, the absorber mass, resonant frequency and damping of the absorber at which significant amount of energy supplied to the system flows into absorbers. A potential application of this method in the context of energy harvesting is the design of harvesters for a given vibration source. We emphasize through our work that monitoring energies in the system and optimizing them is both rational and vital for designing multiple harvesters that absorb energy from a given vibration source optimally.
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U2 - 10.1515/ehs-2015-0021
DO - 10.1515/ehs-2015-0021
M3 - Article
AN - SCOPUS:85126326963
SN - 2329-8774
VL - 3
SP - 121
EP - 131
JO - Energy Harvesting and Systems
JF - Energy Harvesting and Systems
IS - 2
ER -