Experimental evaluation of the dynamic stiffness and loss factor of elastomeric vibration isolators
TS1925.D46 2018
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2024
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my.uniten.dspace-337292024-10-13T02:03:21Z Experimental evaluation of the dynamic stiffness and loss factor of elastomeric vibration isolators Denash Gunaseharan TS1925.D46 2018 Dynamic characteristics of elastomeric vibration isolators are difficult to be determined theoretically because of the unique design with complicated geometry. The aim of this project is to enhance the understanding on the dynamic behaviour of the elastomeric isolator which is widely used in the mechanical industry and also to design and fabricate an experimental rig for the evaluation of the dynamic properties of the isolators. Another purpose of this project is to compare the dynamic properties of the silicone and natural elastomeric isolators. Impact hammer excitation technique has been used on the designed experimental setup to evaluate the dynamic properties of the isolators in both compression and shear setup. This experimental rig is designed based on the single degree of freedom system and the dynamic stiffness and loss factor of the natural and silicone isolators with different preloaded mass has been identified by using the measured receptance and phase angle. Based on the findings, the dynamic properties of natural and silicone isolator are crucially relies on the frequency and preloaded mass. The dynamic stiffness of both natural and silicone elastomer increases when weight of the preload mass is higher in both configurations. The dynamic stiffness of these isolator increases with the frequency and it shows non- linear behaviour as well. The dynamic stiffness of the silicone isolators are slightly higher when compared with the natural isolators because deformation occurrence at a higher intensity. However, the loss factor attained from this experiment are difficult to be predicted because of its inconsistent result due to the resonance effect. The method presented in this experiment has been validated by reconstructing the receptance function and compared directly with the measured receptance function. The results obtained for the shear configurations is more accurate compared to the compression configuration for both type of elastomeric isolators. Natural isolator has more accurate results in the compression configuration than the silicone isolators. 2024-10-07T04:38:32Z 2024-10-07T04:38:32Z 2018 Resource Types::text::Final Year Project https://irepository.uniten.edu.my/handle/123456789/33729 en application/pdf |
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Universiti Tenaga Nasional |
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UNITEN Library |
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Asia |
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Malaysia |
| content_provider |
Universiti Tenaga Nasional |
| content_source |
UNITEN Institutional Repository |
| url_provider |
http://dspace.uniten.edu.my/ |
| language |
English |
| description |
TS1925.D46 2018 |
| format |
Resource Types::text::Final Year Project |
| author |
Denash Gunaseharan |
| spellingShingle |
Denash Gunaseharan Experimental evaluation of the dynamic stiffness and loss factor of elastomeric vibration isolators |
| author_facet |
Denash Gunaseharan |
| author_sort |
Denash Gunaseharan |
| title |
Experimental evaluation of the dynamic stiffness and loss factor of elastomeric vibration isolators |
| title_short |
Experimental evaluation of the dynamic stiffness and loss factor of elastomeric vibration isolators |
| title_full |
Experimental evaluation of the dynamic stiffness and loss factor of elastomeric vibration isolators |
| title_fullStr |
Experimental evaluation of the dynamic stiffness and loss factor of elastomeric vibration isolators |
| title_full_unstemmed |
Experimental evaluation of the dynamic stiffness and loss factor of elastomeric vibration isolators |
| title_sort |
experimental evaluation of the dynamic stiffness and loss factor of elastomeric vibration isolators |
| publishDate |
2024 |
| _version_ |
1814061087312576512 |
| score |
13.232405 |