Experimental Analysis to Evaluate the Effect of Dynamic Absorber / M. Azhan Anuar...[et al.]

Anuar*,, M. Azhan and A. Samat, Syafirah and Mat Isa, A.A. (2017) Experimental Analysis to Evaluate the Effect of Dynamic Absorber / M. Azhan Anuar...[et al.]. Journal of Mechanical Engineering (JMechE), SI 4 (4). pp. 242-262. ISSN 18235514

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Abstract

Passive Dynamic Absorber (PDA) is a mechanical device used to tackle unwanted vibration resonance within the operational frequency of the system. Theoretically, resonance can be avoided if the excitation (operating) frequency is far away from the natural frequencies of the structures. Hence, it is important to identify the structural natural frequencies, to ensure this condition did not occur. In this study, an experimental main system is designed and fabricated and then, tested using Operational Modal Analysis (OMA) to obtain the natural frequency. PDAs are developed based on Dunkley Method (DM) and Randy Fox Method (RFM) and applied to the main vibrating system. Frequency Response Function (FRF) for both models is obtained using OMA and its effectiveness is evaluated. It is shown that the PDA reduces the magnitude of FRF of the main system at the selected resonance frequency and splitting it into two new resonance frequencies. Hence, it can be predicted that the vibration can be effectively suppressed at a specific frequency when the PDA is attached to the main system. This study enables verification of the effectiveness of dynamic absorber to tackle resonance problem. In future, these results will be helpful to evaluate the performance of PDA based on DM and RFM methods.

Metadata

Item Type: Article
Creators:
Creators
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Anuar*,, M. Azhan
UNSPECIFIED
A. Samat, Syafirah
UNSPECIFIED
Mat Isa, A.A.
UNSPECIFIED
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TJ Mechanical engineering and machinery > Mechanics applied to machinery. Dynamics
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Mechanical Engineering
Journal or Publication Title: Journal of Mechanical Engineering (JMechE)
UiTM Journal Collections: UiTM Journal > Journal of Mechanical Engineering (JMechE)
ISSN: 18235514
Volume: SI 4
Number: 4
Page Range: pp. 242-262
Item ID: 39185
Uncontrolled Keywords: Dynamic absorber; Dunkerley method; Randy Fox method; Frequency Response Function; Operational Modal Analysis.
URI: https://ir.uitm.edu.my/id/eprint/39185

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39185

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