Steady State Thermal and Structural Analysis of Disc Brake Using Solidworks And Ansys (Case Study on Disc Brake of Volvo B11r Model Bus)
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Date
2020-08
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
Braking system represents one of the most fundamental and critical safety components in modern
vehicles. Brake absorbs kinetic energy of the rotating parts (Wheels) and the energy dissipated in
the form of heat energy to the surrounding atmosphere. It decelerates or stops the vehicle. The
thesis describes the finite element analysis techniques to predict the failure region on the pre
maturity faller on disc brake to identify the critical locations of the components. The disc brake
implemented on the front axle model with gray cast iron materials were studied in Disc brake
which commonly used in auto motives. Despite all the stresses experience by the disc doesn’t
damage the disc due to high tensile strength but the disc may fail under fatigue loading. There is
frictional heat generated over disc surfaces, which leads to high temperature. Due to number of
brake actuation, stress and deformations have generated on the disc surface. Hence, it reduce the
overall performance and efficiency of the brake system. The problem in Volvo B11R Bus of
ODAA integrated plc, which is imported in May, 2019 is that their disc brake is involving premature
failure.
i.e
before
service
life
of
500,000
km.
This
will
initiate
accident
and
leads
to
loss
to
the
supplier
due
to
complain
from
the
customer.
The
objective
of
this
paper
was
to
model and
steady state thermal and static structural analysis using finite element method (FEM). The method
used to this research is to obtain necessarily data to study parametric values are retention time,
force and torque. In order to make compare between actual prematurity failure and ANSYS result
values decreasing torque and force while keeping retention time and mesh size at constant result
in decreasing in both total deformation and Von miss stress. The maximum total deformation is
2.2424e-005m, the Von miss stress is 1.067e+008 Pa compressive ultimate strength 8.2e+008 pa,
tensile ultimate strength 2.4e+008, compressive yield strength 1.e+009, tensile yield strength
1.e+008 and temperature result 420 ℃ . The ANSYS result shows that the crack that is happening
in the bus’s disc break is due to the increase in toque, force and temperature which result in higher
deformation and stress. Thus we obtained the values of total deformation, Von-miss stress and
thermal effects on disc brake, and interpreted them to explain the cause of the failure.
Description
Keywords
Disc Brake, Solid work, ANSYS, FEA (finite element analysis)