ANALYTICAL DESCRIPTION AND OPTIMIZATION OF THE DYNAMIC BEHAVIOUR OF PASSIVELY SUSPENDED ROAD VEHICLES

✍ Scribed by M. GOBBI; G. MASTINU

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 406 KB
• Volume: 245
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.2001.3591

✦ Synopsis

A simple two-degree-of-freedom linear model is used to derive a number of analytical formulae describing the dynamic behaviour of passively suspended vehicles running on randomly pro"led roads. Two di!erent power spectral densities are considered for modelling the road irregularity. The derived analytical formulae can be used either during preliminary design or for other special purposes, especially when approximated results are acceptable.

An optimization method, based on Multi-Objective Programming and Monotonicity analysis, is introduced and applied for the symbolic derivation of analytical formulae featuring the best compromise among con#icting performance indices pertaining to the vehicle suspension system, i.e., discomfort, road holding and working space. The optimal settings of the relevant vehicle suspension parameters (i.e., tyre radial sti!ness, spring sti!ness and damping) are derived either symbolically and/or numerically.