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Development and Experimental Evaluation of a Vehicle Rear Suspension Vibration Model

[+] Author Affiliations
Shung H. Sung, Donald J. Nefske, Douglas A. Feldmaier, Spencer J. Doggett

General Motors Corporation, Warren, MI

Paper No. IMECE2002-39148, pp. 267-276; 10 pages
doi:10.1115/IMECE2002-39148
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Design Engineering
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Design Engineering Division
  • ISBN: 0-7918-3628-2 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

A finite-element model of a vehicle rear suspension is developed and experimentally evaluated for predicting the vibration response of the rear suspension to 300 Hz. The suspension model is developed from ten major component finite-element models that were individually correlated to 300 Hz prior to assembly. The bushing and isolator connections between the components are represented using measured dynamic stiffness and damping rates, and a modal tire model is used to represent the tire-wheel assembly. Shaker excitation tests were conducted with the rear suspension supported in a specially designed test fixture to obtain the measured vibration response of the suspension. Comparisons are made of the predicted and measured frequency response functions (FRFs) and modes to experimentally assess the accuracy of the suspension model to 300 Hz. The accuracy of a traditional rigid-link rear suspension model is also assessed.

Copyright © 2002 by ASME
Topics: Vehicles , Vibration

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