Computer Simulation Of An F-4 Phantom
Crashing Into A Reinforced Concrete Wall
Author(s)
M. Itoh, M. Katayama & R. Rainsberger
Abstract
This paper presents a numerical simulation of an aircraft crashing into a
reinforced concrete wall by using a general-purpose hydrocode AUTODYN®.
Computational results are compared with the experimental ones obtained by a
full-scale aircraft impact test conducted at Sandia National Laboratories in New
Mexico, USA, in 1988. An actual F-4 Phantom jetfighter was used in the test.
The geometry of the finite element model of the aircraft is adjusted to fit to the
data given in the test report and also available publicly. Two engines, a fuel
tank, and water to simulate the fuel weight are considered in the numerical
model. The numerical results show good agreements with the experimental ones
as to an impact force, damage to the wall and the crushing behaviour of the
aircraft.
Keywords: numerical simulation, aircraft impact, F-4 phantom, reinforced
concrete, hydrocode, AUTODYN®, impact force, finite element.
1 Introduction
An aircraft generally consists of many components such as a fuselage, main
wings, tail wings, engines, landing gears, avionics equipments, ribs/stringers,
seats, fuel tanks with fuel inside, and so forth. To take every component into
account in a numerical model requires a lot of human resources in addition to
increasing loads on a computing capacity, because it is not an easy task in most
cases to obtain detailed data on the geometrical arrangements of these parts
especially of a military aircraft.
In this study we propose a finite element model which is reasonably simple
and accurate enough to simulate the impact of an aircraft on a deformable target.
Keywords
numerical simulation, aircraft impact, F-4 phantom, reinforced
concrete, hydrocode, AUTODYN®, impact force, finite element.
Related Book
Other papers in this volume
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