Author: Yu, Shihao
Title: Analysis and optimal design of a multi-DOF vibration isolation platform
Advisors: Jing, Xingjian (ME)
Degree: M.Sc.
Year: 2021
Subject: Vibration
Damping (Mechanics)
Hong Kong Polytechnic University -- Dissertations
Department: Department of Mechanical Engineering
Pages: 60 pages : color illustrations
Language: English
Abstract: In this paper, a new quadruped 3-DOF vibration isolation platform based on bio-inspired X-shaped structure is studied. A three-layer X-shaped structure is adopted as legs to construct a passive platform. Because of the flexible X-shape structure, the stiffness and damping characteristics of the system can be adjusted by changing the structural parameters. Therefore, it can be designed to achieve excellent performance including stability and high-static-low-dynamic-stiffness isolation effect in z-axis translation and x-axis and y-axis rotation and bearing the target load in the vertical direction. The mechanic model is established and static analysis of the static stiffness, working range and loading capacity is studied in this paper. The analysis of the static stiffness and vibration response of the system shows that (a) the X-shaped structure platform has high static nonlinear stiffness, which can provide target loading capacity, as well as very low dynamic stiffness to achieve excellent vibration isolation performance; (b) compared with linear spring-damping system, the X-shaped-structure-based 3-DOF platform has much lower resonant frequency, which means a better vibration isolation performance; (c) both static and dynamic stiffness is adjustable and designable with structure parameters and very easy to implement.
Rights: All rights reserved
Access: restricted access

Files in This Item:
File Description SizeFormat 
5923.pdfFor All Users (off-campus access for PolyU Staff & Students only)1.67 MBAdobe PDFView/Open

Copyright Undertaking

As a bona fide Library user, I declare that:

  1. I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
  2. I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
  3. I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.

By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.

Show full item record

Please use this identifier to cite or link to this item: