Development Of A Device To Increase The
Protection Of Vulnerable Road Users In The Case
Of Impact Against Heavy Vehicles
Author(s)
M. Avalle, G. Belingardi & A. Giorda
Abstract
The protection of vulnerable road users in urban traffic is nowadays a major
issue in vehicle construction. Numerical techniques to perform virtual tests are of
great help in dealing with these vehicle design problems.
The objective of this research is the selection of an optimal configuration for
a pedestrian protection system based on the adaptive surfaces in Heavy Vehicles
(HV). These adaptive surfaces can be an add-on solution for the front grille and
bumper, and are moved by means of actuators in pre-impact situations.
A numerical multibody model has been developed with MADYMO code to
simulate a 30 km/h truck-pedestrian impact. This model has been used to set-up
a full factorial plan with three variables in order to reduce the possible biological
damage to the pedestrian. The damage risk is evaluated by means of the Head
Injury Criterion (HIC). The optimal solution with respect to the three variables
has been determined by means of a regression model.
Keywords: passive safety, optimisation, adaptive surfaces, pedestrian impact,
heavy vehicles.
1 Introduction
Pedestrian impact study is currently a relevant topic in vehicle safety design
[1,2]. The goal of approval rules such as the 2003/102/CE directive that is
compulsory for all new vehicles starting from 2010, and rating rules such as
EuroNCAP tests [3] is to improve the passive safety performance of the vehicles,
with particular attention to the VRUs (Vulnerable Road Users) such as
pedestrians.
Meeting these safety requirements means reducing the aggressivity of the
external vehicle structure against pedestrians in order to limit as much as
Keywords
passive safety, optimisation, adaptive surfaces, pedestrian impact,
heavy vehicles.
Related Book
Other papers in this volume
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