Finite element analysis of a beam structure attached with tuned vibration absorbers
In this study, the concept of vibration dynamic absorbers used to analyze vibration of a beam structure where simulation has been done by ANSYS APDL. The dynamic vibration absorbers were attached to the fixed-fixed end beam with four different conditions according to its location of placement. The b...
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| Format: | Thesis |
| Published: |
2015
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| Online Access: | http://eprints.uthm.edu.my/7554/ http://eprints.uthm.edu.my/7554/1/NOOR_ASLAMIAH_BINTI_MAT_JUSOH.pdf |
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| Summary: | In this study, the concept of vibration dynamic absorbers used to analyze vibration of a beam structure where simulation has been done by ANSYS APDL. The dynamic vibration absorbers were attached to the fixed-fixed end beam with four different conditions according to its location of placement. The beam modelled by ANSYS was divided into twenty elements. There are twenty one nodes on the beam and distance between nodes is 0.04m. The length of beam, L is 0.8m. The DVA was mounted at node 3 (side of the beam) and node 12 (center of the beam). This research is about the vibration characteristics of the fixed-fixed end beam and dynamic vibration absorbers when placed together and harmonic force,F0 exerted on the beam. The vibration amplitude of the beam structure without DVA and with attached DVAs were compared. The simulation results show amplitude at the natural frequency of beam was decrease close to zero and at the same time amplitude of DVAs were increased. The amplitude of the fixed-fixed end bean and DVAs can be observed significantly at graph were constructed. It is proved that the DVAs absorb vibration at the beam structure. The percentage of reduction for the beam amplitude based on location of DVAs that was placed at the beam. |
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