DESIGN AND ANALYSIS OF AUTOMOBILE BOMBERS WITH THE CAPACITY OF ENERGY RELEASE

Document Type : Primary Research paper

Authors

1 Assistant Professor, Department of Aeronautical Engineering Nehru Institute of Technology, Coimbatore

2 Assistant Professor, Department of Aeronautical Engineering Nehru Institute of Technology, Coimbatore.

Abstract

The goal of this work is to
mitigate the degree of damage to passengers
caused by automobile collisions. Crash
phenomena involving road vehicles were
investigated for the purpose of developing
an impact attenuation design that can with
stand speeds higher than the current
specified range of upto 4km/h (forabumper).
Different impact attenuation systems in the
vehicle were studied with emp has is on the
bumper modeling, analysis and design. A
mathematical model for a bumper was
developed. Simulation of impact of the
bumper against a fixed barrier was
performed.A passive friction element was
introduced into the bumper system to
improve on the attenuation of the impact and
kinetic energy absorption capacity.
Amathematical modelofthebumper-damper
system was formulated and used to simulate
impact phenomena for a 1900kg mass
moving at a speed of
70km/h(19.4m/s),17.5times the speed of a
typical design specification. The simulation
revealed that the energy absorption capacity
ofthe bumper was
improvedwiththeadditionofa
frictionelement.Designparametersforthefricti
on damperwereextractedfromtheresultsof
thesimulation.Theextracteddesign
parametersincludestiffness,k,andcoefficiento
fthe damping,c, ofthebumper.The use
oftheresultsfromthesimulationinthedesign
ofthebumperwaspursuedwith
success.Frictiondamperdesignswerepropose
d.Twoofthesedesignswerebuilt
andusedinexperimentstoverifytheireffectiven
essandtovalidatethesimulationresults.Theexp
erimentsrevealedthathigherenergyabsorption
couldbeachieved
withtheadditionofafrictionelementtotradition
albumpers.
Int. J. of Aquatic Science
Volume 12, Issue 3 - Serial Number 3
ICMMNT-2021 International Virtual Conference on Materials, Manufacturing and Nanotechnology, 30th June, 2021.
June 2021
Pages 675-681

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