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VIBSEAT Résumé de rapport

Project ID: G3RD-CT-2002-00827
Financé au titre de: FP5-GROWTH
Pays: France

Numerical assessment of fore-and-aft suspension performance to reduce whole body vibration of wheel loader drivers

While driving off-road vehicles, drivers are exposed to whole-body vibration in all directions. Seat manufacturers supply products equipped with fore-and-aft suspension but only a few studies report their performance. The work done proposes a numerical method applicable to design fore-and-aft suspensions for off-road vehicle seats. 5 steps were required to achieve this goal:
a) Measurements of realistic vibration and shock signals on the cab floor in a wheel loader during working operations.
b) Measurements in laboratory of the dynamic response of a seated subject exposed to fore-and-aft random vibrations
c) Development of a numerical model describing the dynamical response of the seat/man system
d) Definition of criteria to assess the vibration performance of a fore-and-aft suspension and realisation of simulations to optimise suspension properties
e) Verification in laboratory of the increased performance with a suspension prototype


Gerard FLEURY, (Engineer)
Tél.: +33-38-3502125
Fax: +33-38-3502186