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FP5

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

Reported by

INSTITUT NATIONAL DE RECHERCHE ET DE SÉCURITÉ
Laboratoire de Modélisation des Systèmes Mécaniques de Prévention, Service I.E.T., Institut National de Recherche et de Sécurité, Avenue de Bourgogne, B.P. no 27
54501 VANDOEUVRE CEDEX
France