Automobile Bumper Beam Analysis to Improve Energy Absorption
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Date
2017-10
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Publisher
AAU
Abstract
Automotive Bumper is one of the main parts which is used as protection for passengers
from front and rear collision. Bumpers beam play an important role in preventing the
impact load from being transferred to the automobile and passengers. So it becomes an
important part of a vehicle as a safety and performance point of view. The basic use of
bumper is to absorb energy in case of a collision. The main purpose of this paper is to
design a bumper beam which is to improve crashworthiness of the bumper and analyzes
the impact behavior of a composite car bumper beam made from s-glass fiber reinforced
epoxy composite materials with a volume fraction 60% fiber and 40% matrix.
Crashworthiness is the ability of the bumper beam to prevent occupant injuries in the
event of an accident and this is achieved by minimizing the impact force during the
collision. The existing lifan 520 model bumper beam is replaced with composite bumper.
The internal energy which is absorbed by steel material is 1200.9 J where the composite
material is 1960 J which is 38.7 % higher than that of steel. The study is performed using
ANSYS software for the design of the new car bumper made from s-glass fiber
reinforced epoxy composite materials and the internal energy absorbed by the materials,
total deformation as well are evaluated by use of finite element method.
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Keywords
glass fiber, epoxy, impact load, total deformation, internal energy