Oct Ijmte - KR
Oct Ijmte - KR
effective conservative energy can produce in the To Determine Stress Intensity Factor, Crack Extension
hybrid vehicle. Force, Crack Opening Displacement. . From Dynamics
Shrikant V. Bhoyar, G.D. Mehta, J.P. Modak, have And Fracture Mechanics, It Is Well Known That
make designed for the load lifting application Accelerated Crack Nucleation And Micro-Crack
Conference, 14th July 2013, Tirupati, India, ISBN: Formation In Components Can Occur Due To Various
978-81-927147-9-0 In this study, a simple Reasons, Such As Transient Load Swings, Higher Than
transmission system consisting gearbox, clutch and Expected Intermittent Loads, Or Defective Component
engine are specially designed for lifting of load Materials. Normal Wear Causes Configuration Changes
application. Stiffness and equivalent stiffness of all the That Contribute To Dynamic Loading Conditions That
three shafts have been calculated. Equivalent mass Can Cause Micro Crack Formation At Material Grain
moment of inertia is also calculated. From by using Boundaries In Stress Concentrated Regions (Acute
this data, given by Prof. DOW, have calculated the Changes In Material Geometry). So, Finally They
engagement duration period for the selected Conclude That If The Crack Propagates In The
transmission power system and the dissipation of Composite Materials, They Tend To Fail Faster Than
energy has been plotted during the engagement. The Aluminum Alloys Thereby Reducing Their Life. So
excitation effect of torque and damping coefficient on Care Should Be Taken For Composite Materials Not To
the amplitude of vibration is plotted for various values Get The Crack.
of excitation speeds. Results shows increment in TYPES OF CLUTCHES
damping coefficient and the amplitude of vibration Following are the two main types of clutches
decreases with the decrease in the excitation of torque commonly used in engineering practice:
and the vibration amplitude also be decreases. Positive clutches
Karanjkar A. S., Barve P. C., Adhav R. B., Pandey M. Friction clutches
D., Prof. Londhe B.C. Prof. Bhane A.B., "Modeling Positive clutches
and Simulation of Multi-Drive Clutch (ISSN 2347- The positive clutches are used when a positive drive is
6435(Online) Volume 4, Issue 4, April 2015) they required. The simplest type of a positive clutch is a jaw
have stated in this paper the design of clutch by or claw clutch. The jaw clutch permits one shaft to
combining the operation of the centrifugal action in drive another through a direct contact of interlocking
the single plate clutch system of the transmission jaws. It consists of two halves, one of which is
mechanism to overcome the wearing effect when there permanently fastened to the driving shaft by a sunk key.
is the transmission of power from one shaft to that of The other half of the clutch is movable and it is free to
the other shaft that is from driving shaft to the driven slide axially on the driven shaft, but it is prevented from
shaft. turning relatively to its shaft by means of feather key.
P. Naga Karna, Tippa Bhimasankara Rao," Analysis of A square jaw type is used where engagement and
Friction Clutch plate using FEA", e-ISSN: 2278-067X, disengagement in motion and under load is not
p-ISSN: 2278-800X, Volume 6, Issue 2 (March 2013), necessary. This type of clutch will transmit power in
PP. 81-87 they have compared the two materials like either direction of rotation. The spiral jaws may be left-
aluminum and the steel of wet clutch plates by taking hand or right-hand, because power transmitted by them
the observations of the stress distribution and the is in one direction only. This type of clutch is
temperature distribution of the clutch plate by taking occasionally used where the clutch must be engaged
the dimensions of the plate in existence and also take and disengaged while in motion. The use of jaw
models in the pro-e and the analysis have been taken by clutches are frequently applied to sprocket wheels,
using the ansys. gears and pulleys. In such a case, the non-sliding part is
Static And Dynamic Analysis of Clutch Plate with made integral with the hub.
Crack by N.V. Narasimharao has Done Research Work
On Investigate How A Crack Propagates And Grows In
A Clutch. A Clutch Plate Is Analyzed For Crack
Propagation For Different Materials Aluminum Alloy
6061, Aluminum Alloy 7475, Composite Materials S2
Glass And Kevlar. Theoretical Calculations Are Done Fig.2: Square jaw clutch
SOLIDWORKS
Solid Works is mechanical design automation
software that takes advantage of the familiar
Microsoft Windows graphical user interface.
It is an easy-to-learn tool which makes it possible
Fig.3: Spiral jaw clutch for mechanical designers to quickly sketch ideas,
Friction clutches experiment with features and dimensions, and
A friction clutch has its principal application in the produce models and detailed drawings.
transmission of power of shafts and machines which A Solid Works model consists of parts, assemblies,
must be started and stopped frequently. Its application and drawings.
is also found in cases in which power is to be delivered Typically, we start with a sketch, make a base
to machines partially or fully loaded. The force of element, and after that add more highlights to
friction is used to start the driven shaft from rest and the model. (One can likewise start with an
gradually brings it up to the proper speed without insert surface or strong geometry).
excessive slipping of the friction surfaces. In We are allowed to refine our plan by including,
automobiles, friction clutch is used to connect the changing, or reordering highlights.
engine to the drive shaft. In operating such a clutch,
Associativity between parts, assemblies, and
care should be taken so that the friction surfaces engage
drawings that progressions made to one view are
easily and gradually bring the driven shaft up to proper
consequently made to every other view.
speed. The proper alignment of the bearing must be
We can create illustrations or congregations
maintained and it should be located as close to the
whenever in the design procedure.
clutch as possible. It may be noted that:
Several ways a part can be builded like
1. The contact surfaces should develop a frictional
Layer-cake approach: The layer-cake approach
force that may pick up and hold the load with
constructs the section one piece at a time, including
reasonably low pressure between the contact
each layer, or feature, onto the past one.
surfaces.
Potter’s wheel approach:
2. The heat of friction should be rapidly *dissipated
The potter's wheel approach manufactures the part as a
and tendency to grab should be at a minimum.
solitary rotated feature. As a solitary draw speaking to
3. The surfaces should be backed by a material stiff
the cross area incorporates all the data and
enough to ensure a reasonably uniform distribution
measurements important to influence the part as one to
of pressure.
include.
TYPES OF CLUTCH FAILURES
Manufacturing approach:
1. Burnt hub, Pulley, and/or Coil.
In an assembly, the simple to draw relations is mates.
2. Bearing failure.
Similarly as outline relations characterize conditions,
3. Noisy Bearing.
for example, tangency, parallelism, and concentricity
4. Un-burnished clutch.
as for portray geometry, get together mates
5. Improper rotor to hub air gap.
characterize identical relations as for the individual
6. Misaligned belt or use of wrong clutch.
parts or segments, permitting the simple development
7. Open circuit inside field coil.
of assemblies. Solid Works likewise incorporates extra
8. Failed field coil mounting flange welds.
propelled mating highlights, for example, designed
9. Faulty lead wire.
gear and cam supporter mates, which permit
TYPES OF FRICTION CLUTCHES
displayed, adapt congregations to precisely recreate
Though there are many types of friction clutches, yet
the rotational development of a real apparatus prepare.
the following are important from the subject point of
At long last, sketches can be made either from parts or
view:
congregations. Perspectives are naturally produced
Disc or plate clutches (single disc or
from the strong model, and notes, measurements and
multiple disc clutch),
resistances would then be able to be effortlessly added
Cone clutches, and
Centrifugal clutches
to the illustration as required. The illustration module ANSYS has come to considerably facilitate by
incorporates most paper sizes and norms. conveying this innovation in an inventive reenactment
A Solid Works display comprises of parts, assemblies, structure, ANSYS Workbench 16.0. The ANSYS
and drawings. Workbench condition is the paste that ties the
(1) Part: Individual segments are attracted the type of reproduction procedure; this has not changed with
part illustrations. version.16.0. In the first ANSYS Workbench, the
(2) Assembly: The individual parts are collected in this client cooperated with the investigation in general
district. utilizing. The stage's undertaking page: propelling the
(3) Drawings: This contains definite data of the get different applications and following the subsequent
together. documents utilized during the time spent making an
MODELLING OF CLUTCH PLATE examination. Tight joining between the segment
applications yielded remarkable usability for setup and
arrangement of even complex multi material science
reproductions.
4. ANSYS program helps in outlining the PC models FOR 5mm DIAMETER HOLE
and concentrate the physical reactions, for example, Material: Structural steel
feelings of anxiety, temperature appropriation.
ANALYSIS OF CLUTCH PLATE
Material properties:
Material Density Poison Young’s
3
(Kg/mm ) ratio modulus
(Pa) Fig.13: Maximum stress view of 5mm clutch plate
Structural 7850 0.3 2E+11 for Structural steel material at constant pressure
steel
Stainless 7750 0.31 1.93E+11
steel
Table.1: Material properties
At constant pressure:
Modal analysis:
Material: Structural steel
Fig.44: Maximum stress view of 7mm clutch plate Fig.49: Mode shape 3 of 7mm clutch plate for
for Stainless steel material at constant pressure Structural steel material at constant pressure
Material: Stainless steel
Fig.58: Maximum strain view of 5mm clutch plate Fig.64: Maximum strain view of 6mm clutch plate
for Structural steel material at applied torque for Stainless steel material at applied torque
For 6mm hole diameter For 7mm hole diameter
Material: Structural steel Material: Structural steel
Fig.59: Maximum stress view of 6mm clutch plate Fig.65: Maximum stress view of 7mm clutch plate
for Structural steel material at applied torque for Structural steel material at applied torque
Fig.60: Total deformation view of 6mm clutch plate Fig.66: Total deformation view of 7mm clutch plate
for Structural steel material at applied torque for Structural steel material at applied torque
Fig.62: Maximum stress view of 6mm clutch plate Fig.68: Maximum stress view of 7mm clutch plate
for Stainless steel material at applied torque for Stainless steel material at applied torque
Fig.63: Total deformation view of 6mm clutch plate Fig.69: Total deformation view of 7mm clutch plate
for Stainless steel material at applied torque for Structural steel material at applied torque
GRAPH
Deformation 1
1185 STRUC
FOR 7mm DIAMETER HOLE TURAL
1180
Materials Maximu Total Maximu STEEL
m stress deformatio m strain 1175
(MPa) n (mm) 1170 STAINL
1165 ESS
Structura 282.17 0.30332 0.0014111
234 236 238 STEEL
l steel
Stainless 282.19 1.31332 0.001462 DEFORMATION (mm)
steel Fig.78: Graph of Modal analysis (Frequency Vs
Table.6: Static analysis results of 7mm diameter hole Deformation) at three different modes for 7mm hole
clutch plate at constant pressure diameter
Deformation 2 GRAPH
Deformation Vs Frequency
1190 Maximum strain Stainless
Frequency(Hz)
STRUCTUR steel
1180 Total deformation (mm)
AL STEEL
1170 Maximum stress (MPa)
1160 STAINLES Structural
230 235 240 245 Torque (KN-mm) steel
S STEEL
DEFORMATION (mm) 0 50
Fig.79: Graph of Modal analysis (Frequency Vs
Fig.81: Graph of Static analysis results of 5mm
Deformation) at three different modes for 7mm hole
diameter hole clutch plate at theoretical torque results
diameter
HOLE DIAMETER OF 6mm
TORQUE CALCULATION RESULTS
Materi Torque Maxim Total Maxim
Materials Torque (KN-mm)
als (KN- um deforma um
5mm 6mm 7mm mm) stress tion strain
Structura 29.114725 28.7688982 28.360193 (MPa) (mm)
l steel 05 5 8 Struct 28.76889 38.14 0.007144 0.00019
ural 825 6 232
Stainless 32.349694 32.0475083 31.511326
5 5 steel
steel
Stainle 32.04750 42.539 0.008262 0.00022
Table.8: Theoretical Toque results ss steel 83 6 228
GRAPH Table.10: Static analysis results of 6mm diameter
hole clutch plate at theoretical torque results
Torque (KN-mm)
7mm GRAPH:
Stainles
s steel Maximum strain
6mm
Stainless
Total deformation… steel
5mm
Structur Maximum stress (MPa)
al steel
25 30 35 Torque
Structur
0 50 al steel
Fig.80: Theoretical torque distribution for two
different materials at various configurations
Fig.82: Graph of Static analysis results of 6mm
RESULTS FOR TORQUE APPLY
diameter hole clutch plate at theoretical torque results
HOLE DIAMETER OF 5mm
HOLE DIAMETER OF 7mm
Materi Torque Maxim Total Maxim
Materi- Torque Maximum Total Maximum
als (KN- um deforma um
als (KN- stress deforma- strain
mm) stress tion strain
mm) (MPa) tion
(MPa) (mm)
(mm)
Struct 29.11472 37.423 0.006934 0.00018
Structu- 28.3601 38.092 0.00742 0.00019
ural 505 7 9
ral steel 9385 88 188
steel
Stain- 31.511 42.389 0.00856 0.00022
Stainle 32.34969 41.649 0.008000 0.00021 less 3265 81 29
ss steel 45 2 798 steel
Table.9 Static analysis results of 5mm diameter hole Table.11: Static analysis results of 7mm diameter
clutch plate at theoretical torque results hole clutch plate at theoretical torque results