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Vibration control of structure using multiple passive vibration absorbers

Zaman @ Bujang, Izzuddin and Ali, Yaacub Zaki and Nasoha, Mahyan (2012) Vibration control of structure using multiple passive vibration absorbers. Other thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

Vibrations are undesired phenomenon in mechanical structures. It can cause damage, discomfort, destruction and disturbance of the system or the structure. In this study, the application of passive vibration absorber is investigated and its effectiveness are further researched by comparing the use of single and multiple absorber for the structural vibration control. The vibration absorber system is designed to minimize the vibration amplitude of a simply-supported beam and a simply-supported plate. The beam and plate's vibration characteristic, such as natural frequency and mode shape are determined using three approaches: experimental testing, analytical equations and finite element analysis. In the initial stage, a finite element simulation study is conducted using Ansysm to validate the analytical equations of Matlab and experimental results of a simply-supported beam and a simply-supported plate. The preliminary result indicates that the first four natural frequencies of a simply-supported beam and a simply-supported plate are well-correlated between finite element, analytical and experiment results. Later the research works are further performed with attached single and multiple vibration absorbers. The result shows that multiple vibration absorber produced better results compare to single vibration absorber attachment in reducing the structural's resonance amplitude. The outcomes of overall global vibration reduction for multiple absorber is 9 times while single absorber is only 6 times. In the end, we can conclude that multiple vibration absorber is more effective and shows better result in reducing the resonance vibration of the structure.

Item Type: Thesis (Other)
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA349-359 Mechanics of engineering. Applied mechanics
Depositing User: Normajihan Abd. Rahman
Date Deposited: 14 May 2015 07:27
Last Modified: 14 May 2015 07:27
URI: http://eprints.uthm.edu.my/id/eprint/6900
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