Advanced effective road profile filter for a rigid ring tyre quarter-vehicle model
by James R. Allen II; Moustafa El-Gindy
International Journal of Vehicle Performance (IJVP), Vol. 1, No. 1, 2013

Abstract: This paper describes the development and integration of an advanced effective road profile filter with an in-plane rigid ring tyre quarter-vehicle model. This novel fully integrated model improves upon the standard twin-cam effective road profile filter developed by taking into account the effects of vertical loading on tyre deflection and contact length; the model developed herein is said to be a force-dependent effective road profile (FDERP) rigid ring quarter-vehicle model (RRQVM) because the effective road shape parameters are treated as functions of the vertical contact force at each integration time step. The model is capable of simulating the dynamic response of a free rolling tyre over arbitrarily uneven road surfaces. The RRQVM is validated with tyre spindle vertical acceleration data from virtual finite element analysis (FEA) quarter-vehicle model (QVM) tests. A baseline in-plane RRQVM with a standard - force-independent effective road profile (FIERP) - twin-cam effective road profile filter is also developed for comparison with the FDERP RRQVM. Results for a described durability test event show that the FDERP RRQVM predicts the vertical tyre spindle acceleration more accurately than the FIERP RRQVM.

Online publication date: Sat, 12-Jul-2014

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