DOIONLINE 
DOIONLINE Publish In |
International Journal of Mechanical and Production Engineering (IJMPE)-IJMPE |
 Journal Home Volume Issue |
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Issue |
Volume-10,Issue-10 ( Oct, 2022 ) | |||||||||
Paper Title |
Impact of Frequency up-Conversion on the Performance of Pendulum Equipped with Dynamic Vibration Absorber | |||||||||
Author Name |
Shahryar Nazari Abkenar, Aref Afsharfard, Kyung Chun Kim | |||||||||
Affilition |
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Pages |
92-95 | |||||||||
Abstract |
Abstract - This paper addresses a study on the impact of frequency up-conversion on the vibration behavior of a pendulum designed for an energy harvester mechanism. The equations of motion are developed for 4 degrees of freedom mathematical model using the Lagrange method. The proposed mechanism consists of a pendulum that is located near a barrier and a shock absorber. The presence of a shock absorber reduces the range of displacement of the mass, and at the same time, the frequency up-conversion effect by barrier allows the use of a structure with a frequency higher than the excitation frequency. Both of these effects lead to smaller device sizes. Simulation results reveal that, relative to a simple pendulum structure, the RMS velocity of the mass may be increased, while the displacement of the mass is simultaneously decreased, resulting in an improved energy density. Keywords: Frequency Up-Conversion, Pendulum Vibration, Low-frequency Excitation. | |||||||||
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