A Comparative Study of Lumped Parameter Models for Assessing the Performance of Vehicle Suspension Systems

Paper #:
  • 2015-01-0620

Published:
  • 2015-04-14
DOI:
  • 10.4271/2015-01-0620
Citation:
Mahala, M., Deb, A., and Chou, C., "A Comparative Study of Lumped Parameter Models for Assessing the Performance of Vehicle Suspension Systems," SAE Technical Paper 2015-01-0620, 2015, https://doi.org/10.4271/2015-01-0620.
Pages:
14
Abstract:
Idealized mathematical models, also known as lumped parameter models (LPMs), are widely used in analyzing vehicles for ride comfort and driving attributes. However, the limitations of some of these LPMs are sometimes not apparent and a rigorous comparative study of common LPMs is necessary in ascertaining their suitability for various dynamic situations. In the present study, the mathematical descriptions of three common LPMs, viz. quarter, half and full car models, are systematically presented and solved for the appropriate response parameters such as body acceleration, body displacement, and, pitch and roll angles using representative passive suspension system properties. By carrying out a comparison of the three stated LPMs for hump-type road profiles, important quantitative insights, not previously reported in the literature, are generated into their behaviors so that their applications can be judicious and efficient.
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