Safety Investigation On Rail And Road Vehicles
Exposed To Cross-wind: Wind Tunnel Tests And
Multi-body Simulations
Author(s)
F. Cheli, R. Corradi, D. Rocchi, E. Sabbioni & G. Tomasini
Abstract
A methodology aimed at evaluating the limit safety conditions of road and rail
vehicles when exposed to cross wind is presented in this paper. The procedure
integrates wind-tunnel experimental tests and numerical simulations with
Multi-Body (MB) vehicle models. The main results of the proposed
methodology are the vehicle Critical Wind Curves, representing the combination
between wind and vehicle speed, corresponding to the overcoming of the vehicle
safety limit.
Keywords: MB simulations, wind tunnel testing, safety, aerodynamic forces.
1 Introduction
Over the years the effects of strong winds on road and rail vehicles have become
of increasing concern for transportation system operators. The main risk
associated with cross wind is the vehicle rollover, which is particularly critical
when the vehicle exits a tunnel or when the vehicle runs in a curve on exposed
sites such as viaducts, embankments or long-span bridges. Traffic disruption,
economic loss, injury, mortality and risks connected with the transported goods,
such as hydrocarbons, toxic, flammable and explosive substances, etc. result as a
consequence.
Aim of the work is to describe the methodology developed for assessing of
the limit safety conditions of road and rail vehicles in terms of Critical Wind
Curves (CWC) that represent the combination of vehicle speed and wind mean
speed which leads to the overcoming of the safety limits. The methodology
integrates wind-tunnel experimental tests and numerical simulations with Multi-
Body (MB) vehicle models. The experimental analysis (wind tunnel testing)
Keywords
MB simulations, wind tunnel testing, safety, aerodynamic forces.
Related Book
Other papers in this volume
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