Frequency domain analysis and design of nonlinear vehicle suspension systems

Research output: Chapter in book / Conference proceedingChapter in an edited book (as author)Academic researchpeer-review

1 Citation (Scopus)

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 suspension systems to a large extent. Therefore, it is of great significance to determine a 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 vehicle suspension systems can then be achieved. Comparative studies indicate that the optimal nonlinear damping characteristics demonstrate better dynamic performance than the corresponding linear counterparts and several existing nonlinear optimal damping characteristics obtained by simulations. 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 improvement of vehicle vibration performance and decrease of suspension stroke. Meanwhile, the optimized nonlinear damper will not cause any negative effect on the handling capability.
Original languageEnglish
Title of host publicationHandbook of Vehicle Suspension Control Systems
PublisherInstitution of Engineering and Technology
Pages357-399
Number of pages43
ISBN (Electronic)9781849196345
ISBN (Print)9781849196338
DOIs
Publication statusPublished - 1 Jan 2013

Keywords

  • Dampers
  • Decrease suspension stroke
  • Elastic constants
  • Frequency domain design
  • Frequency-domain analysis
  • Full vehicle dynamic model
  • Mechanical stability
  • Model parameters
  • Nonlinear frequency domain analysis method
  • Nonlinear optimal damping characteristic
  • Nonlinear vehicle suspension systems
  • Optimal nonlinear stiffness
  • Proper stiffness determination
  • Ride comfort improvement
  • Shock absorbers
  • Springs
  • Springs (mechanical)
  • Stability assurance
  • System output spectrum
  • Vehicle dynamics
  • Vehicle evaluation standards
  • Vehicle vibration performance improvement
  • Vibrations

ASJC Scopus subject areas

  • Engineering(all)

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