Author: Chen, Yue
Title: Nonlinear frequency domain analysis and design of vehicle suspension systems
Degree: M.Phil.
Year: 2012
Subject: Automobiles -- Springs and suspension -- Design and construction.
Hong Kong Polytechnic University -- Dissertations
Department: Department of Mechanical Engineering
Pages: xix, 98 leaves : ill. ; 30 cm.
Language: English
Abstract: In the analysis and design of vehicle suspension systems, springs and dampers, which are usually inherently nonlinear, are the most crucial elements to improve the ride comfort, assure the stability and increase the longevity of spring to a large extent. Therefore, it is of great significance to determine proper stiffness and damping characteristics to meet various requirements in practice. In this study, a nonlinear frequency domain analysis method is introduced for nonlinear analysis and design of vehicle suspension systems. The explicit relationship between system output spectrum and model parameters is derived by using the nonlinear frequency domain analysis method and the characteristic parameters of interest can therefore be analyzed directly. The optimal nonlinear stiffness and damping characteristics of the nonlinear vehicle suspension system can then be achieved. Comparative studies indicate that the optimal nonlinear damping characteristics demonstrate obviously better dynamic performance than the corresponding linear counterparts and the existing nonlinear optimal damping characteristics. Simulation studies based on the full vehicle dynamic model verify the nonlinear advantages in terms of three different vehicle evaluation standards. The study shows that the nonlinear optimal damping characteristic obtained by using the nonlinear frequency domain analysis method is very helpful in the improvement of vehicle vibration performance and decrease of suspension stroke. Meanwhile, the optimal nonlinear damper will not cause any negative effect on the handling capability.
Rights: All rights reserved
Access: open access

Files in This Item:
File Description SizeFormat 
b26158589.pdfFor All Users2.56 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: