| Author: | Cheng, Fan |
| Title: | Vibration suppressing using viscoelastic material |
| Advisors: | Wong, W. O. (ME) |
| Degree: | M.Sc. |
| Year: | 2016 |
| Subject: | Vibration. Damping (Mechanics) Viscoelasticity. Hong Kong Polytechnic University -- Dissertations |
| Department: | Department of Mechanical Engineering |
| Pages: | vi, 74 pages : illustrations |
| Language: | English |
| Abstract: | Optimizations of the traditional dynamic vibration absorber (DVA) in single degree of freedom (SDOF) have been well researched by many scholars. However, optimizations of viscoelastic vibration absorber haven't been completed yet. Some researchers use existing material and take the geometrical factor as the optimization parameter, which limits the design efficiency and flexibility. Some others tried to find optimal modulus curves for viscoelastic material, regardless of the limitation of material property. Derivation of fixed-points theory is presented in this thesis. Optimization of viscoelastic dynamic absorber with modified viscoelastic material is proposed, which may be guidance for material engineer to design better material for viscoelastic dynamic absorber. And viscoelastic dynamic absorber with parallel connected spring is proposed, making the viscoelastic dynamic absorber using existing viscoelastic material more effective. The optimization of viscoelastic dynamic absorber with parallel connected spring is also derived, which have been proved to perform better than traditional design, especially under low frequency. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b29109413.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 3.92 MB | Adobe PDF | View/Open |
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