Title: Analysis of torsion loads on vehicle structures and suspension systems by simplified elastic models

Authors: K.S.R.K. Prasad, M.V. Subba Rao

Addresses: Department of Aeronautical Engineering, I.I.T., Bombay, India. ' Vehicle Research Development Establishment, Ahmednagar, India

Abstract: Recognising the need for simplified modelling of a variety of complex multi-axled vehicle structural systems, a comprehensive elastic spring model system is developed to facilitate (a) optimal design and (b) computation of ground reactions for torsional loads that arise during complex operational conditions (viz. terrain unevenness, lateral accelerations in addition to high and eccentric loads). Applications of this system for two-, three- and four-axled vehicles are illustrated. The resulting equations and the principal steps involved in computer-aided solutions are delineated. A parametric study of a typical two-axled medium commercial vehicle is attempted, employing a personal computer with the aid of these simplified elastic models. Inferences are drawn from this simple study that are pertinent to both the design and operational parameters of this vehicle and suspension system to demonstrate the utility of the models.

Keywords: vehicle structures; computer-aided asymmetric analysis; torsion loads; chassis frame; suspension systems; elastic spring models; ground reactions; boundary conditions; modelling; vehicle design.

DOI: 10.1504/IJVD.1989.061557

International Journal of Vehicle Design, 1989 Vol.10 No.6, pp.687 - 702

Published online: 26 May 2014 *

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