Frequency domain analysis and design of nonlinear vehicle suspension systems

Frequency domain analysis and design of nonlinear vehicle suspension systems

For access to this article, please select a purchase option:

Buy chapter PDF
(plus tax if applicable)
Buy Knowledge Pack
10 chapters for £75.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Handbook of Vehicle Suspension Control Systems — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

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.

Chapter Contents:

  • Abstract
  • 13.1 Introduction
  • 13.2 System model and the output frequency response function (OFRF) method
  • 13.2.1 System model
  • 13.2.2 Determination of the system OFRF
  • 13.2.3 Optimization and system analysis
  • 13.2.4 Conclusion
  • 13.3 Comparative studies
  • 13.3.1 Existing nonlinear damping characteristics
  • 13.3.2 Damping characteristics designed via the OFRF-based analysis method
  • 13.3.3 Comparative studies
  • 13.3.4 Dynamic model verification
  • 13.3.5 Conclusion
  • 13.4 Application on a dynamic vehicle model
  • 13.4.1 Dynamic vehicle model
  • 13.4.2 Simulation study
  • 13.4.3 Summary
  • 13.5 Conclusion and future work
  • References

Inspec keywords: vibrations; springs (mechanical); frequency-domain analysis; shock absorbers; vehicle dynamics; elastic constants; mechanical stability

Other keywords: ride comfort improvement; full vehicle dynamic model; proper stiffness determination; vehicle vibration performance improvement; nonlinear optimal damping characteristic; model parameters; nonlinear frequency domain analysis method; decrease suspension stroke; system output spectrum; springs; nonlinear vehicle suspension systems; stability assurance; vehicle evaluation standards; dampers; optimal nonlinear stiffness; frequency domain design

Subjects: Elasticity (mechanical engineering); Vibrations and shock waves (mechanical engineering); Buckling and instability (mechanical engineering); Mechanical components; Mathematical analysis; Vehicle mechanics

Preview this chapter:
Zoom in

Frequency domain analysis and design of nonlinear vehicle suspension systems, Page 1 of 2

| /docserver/preview/fulltext/books/ce/pbce092e/PBCE092E_ch13-1.gif /docserver/preview/fulltext/books/ce/pbce092e/PBCE092E_ch13-2.gif

Related content

This is a required field
Please enter a valid email address