Design And Analysis Of Chain Outer Link By Using Composite Material

IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE)
e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 12, Issue 1 Ver. II (Jan- Feb. 2015), PP 46-50
www.iosrjournals.org
DOI: 10.9790/1684-12124650 www.iosrjournals.org 46 | Page
Design And Analysis Of Chain Outer Link By Using Composite
Material
Tushar.S.Shahane1
, Prof.Ameeth.M.Umbrajkaar2
1
(Design Engineering, P.G.M.C.O.E,Savitribai Phule Pune University,India)
2
(Mechanical Engineering,S.K.N.C.O.E,Savitirbai Phule Pune University,India)
Abstract: Chain Link assembly is extensively used in the industry, the scope of this paper is to review the
applications in the industry and explore the design considerations that go into the design of the assembly. The
paper delves into various application aspects and manufacturing aspects to formulate an idea of the system.
Finally Finite Element Analysis (FEA) has been used to conduct shape optimization. Since lot of work has
already been done in other components, in this paper the focus has been narrowed down to specific component
of outer link [1]. We have to use of composite material for chain out link to minimize the weight of link.
Keywords: Roller chain, link plate, FEM analysis, stress analysis, shape optimization
I. Introduction
Chain drives have been established as one of the most effective forms of power transmission in
mechanical systems. The major advantages of using chain drives are the relatively cheap components, the high
reliability and durability, the relatively high efficiency, the flexibility in selecting shaft center position and
distance, and the ability to drive more than one shaft. However, chain drives introduce some problems such as
noise and vibrations. Although the chain drive has been used for a long time, most of the published research on
it has been concentrated to the latter half of the 20th century. This is caused by the development of powerful
computers, which have made it possible to numerically solve some of equations given by the chain drives’
complicated mechanisms [2]
Roller conveyor chains are generally used in production or assembly lines where individual large
objects need to be conveyed. Typical applications of roller conveyors are carrier conveyors for the transport of
steel coils in a steel plant or slat conveyors that carry objects. A slat conveyor consists of two or more endless
strands of chain with attached non interlocking slats or metal flights to carry the material. Other examples are
conveying pallets, tree-stumps or even whole cars. Wheeled cars, for example, can be carried by the chain but
can also be pulled by the chain [3]. Applications can be divided in two basic conveying modes:
• The material is supported and carried entirely by the chain and attachments.
• The chain does not support the material, but it is pushed, pulled or scraped.
Roller chains are widely used as pulling and driving members of chain mechanisms in escalators,
passenger conveyors and especially in conveyors[4].Roller conveyor chains differ from transmission roller
chains such as a bicycle chain, which is used to transfer torque instead of conveying goods. Conveyor chains
have a large pitch which is efficient in bridging large distances with fewer shackles, they generally have thicker
side plates and rollers with large diameter. Therefore they can withstand higher tensile and shock loads than
transmission chains. Furthermore they can bear large amounts of wear before breakage occurs. On the other
hand, roller conveyor chains have a necessary clearance that easily becomes contaminated with particles from
the conveyed material.A rigid-body analysis is presented of the forces which occur in chain bearing in an
articulation. The analysis differentiates between the two types of chain bearing open end leading or open end
trailing and the results show that the force characteristics in each are significantly different[5] Chain is the most
important element of the industrial processes required for transmitting power and conveying of materials[6].
Chain strips are machine elements that are subjected to extreme service conditions, such as high tensile
loads, friction, and sometimes aggressive operating environment. As these chains operate under various forces,
failure of chain assembly is the major problem.The faulty manufacturing processes are another source of failure
initiation. Main parts of roller conveyor chain are rollers, bushings, bins and chain strip also known as link plate.
In roller conveyor chain there are two chain strips outer and inner respectively.
As the chain revolves on the sprocket continuous repetitive loads are acting on the strips. The tensile
forces are applied by pins which are assembled through holes in the strips. The holes in the strips are significant
stress risers. The chain strips are primarily tension members, and they also are subjected to substantial bending
and stress concentrations around the holes. The chain strips must have enough strength to withstand the tensile
forces without deforming or breaking, and they must have enough ductility to withstand substantial bending and
to resist fatigue[7].

Design and analysis of chain outer link by using composite material
II. Design
A. Hand Calculation
Transported material brown coal
Conveyor length 30 m
Flow 30 T/h
Conveyor conduit width 350 mm
Conveyor conduit height 250 mm
Number of chains 1
Number of teeth of the sprocket 9 (pre-selected)
Load distribution even
Corresponding type of chain according to DIN 8167 (ISO 1977) is MRC 80 x 125
Maximum force = 11679 N
Total length of the pin 55 mm from the table of ISO Standard .
Find out diameter of the roller pin .
Material of pin - Stainless Steel.
S= 200 N/ mm2
.
6 = 200 = 133.33 N/mm2
.
1.5
Summation F = 0.
Summation M = 0 .
6 = P
A
6 = P
Π .d2
4
133.33 = 11679 X 4
3.14Xd2
d2
= 11679 X 4
3.14 X133.33
d2
= 111.58
d = 10.56 mm
Therefore d= 11 mm
Diameter of pin of roller = 11 mm
Force = 11679 N.
Material of link – Carbon steel C40 ,Hardness 44 HRC.
6 = 580 MPa.
Total Area of Cross Section ,
Ac = H X t = 50 X t.
Cross section area of hole = 2 π d t = π d t .
2
Total Area
= 50 t – π d t
= ( 50 – π X 12 ) t
= 12.32 t.

Now 6allow = 580 = 199.99 N/ mm2
3
Also,
6allow = Force
Area
193.33 = 11679
12.32 t
Therefore t = 3 mm.
For safe design take t= 4 mm.
B. Material properties
Table.1
Sr.no Properties E-Glass/
Epoxy
Original
material
1 EX(MPa) 43000
200002 EY(MPa) 6500
3 EZ(MPa) 6500
4 PRXY .27
0.35 PRYZ .06
6 PRZX .06
III. Ansys Results
In ANSYS,in order to calculate the maximum stress and deformation for both the original outer link
selected and the glass fiber link,statistical structural analysis is done and from the hand calculation ,the
maximum force of 11679 N is applied at both the flat hole in outward direction.The ANSYS results formulated
for both the links are as below:
Fig.2 Original chain link deformation From above figure, the original chain link maximum
deformation from structural analysis=0.03699mm.
Fig.3 Original Chain Link Stress From above figure, the original chain link maximum
stress from structural analysis=131.31 mpa

Fig.4 Glass Fiber Chain Link Deformation From above figure, the glass fiber chain link
maximum deformation from structural analysis=0.044641mm.
Fig.5 Glass Fiber Chain Link Stress From above figure, the glass fiber chain link
Maximum stress from structural analysis=53.692 mpa.
IV. Results And Discussion
A. Hand Calculation
Sr.No. Part Stress
1 Original 133.33 mpa
2 Glass fiber 108.81 mpa
Table.2
B. Ansys
Sr.No. Part Stress Deformation
1 Original 131.31mpa 0.03699mm
2 GlassFiber 53.692mpa 0.04464mm
Table.3
V. Conclusion
For original chain outer link, the weight of the link is 0.3135 kg alongwith 7805 nodes and 3963
elements on meshing. For glass fiber chain outer link, the weight of the link is 0.2407 kg with 1276 nodes and
629 elements on meshing.
By using glass fiber link, there is reduction in weight of the outer link material. Also comparing the
hand calculations and the ANSYS results tabulated in Table 2 and Table 3, there is a slight difference in the
hand calculation and ANSYS values for original outer link stress but there is a variation in glass fiber stress
.With increase in glass fiber link thickness, the stress is reduced to a great extent.The reduction in weight and
maximum stress is obtained by using glass fiber as compared to original outer chain link.

References
[1]. Tushar D. Bhoite,Prashant M.Pawar & Bhaskar.D.Gaikwad,“ Fea based study of effect of radial variation of outer link in a typical
roller link chain assembly”in IJMIE,ISSN No 2231-6477,Vol-1,Issue-4,
[2]. 2012.
[3]. Çiçek Özes,Mine Demirsoy “Stress analysis of pin-loaded woven-glass fiber reinforced epoxy laminate conveying chain
components” ,published by Composite structures,Copyright©2004 Elsevier Ltd .
[4]. Kerremans1
et al “Wear of conveyor chains with polymer rollers” in Sustainable Construction and Design 2011, Copyright © 2011
by Laboratory Soete.
[5]. M. Koray KESİKÇİ*1, M. Cüneyt FETVACI2, C. Erdem İMRAK1,
[6]. “Stress distribution of the chain link by means of boundary element and finite element method” in Journal of Engineering and
Natural Sciences,Sigma 2004/4.
[7]. Hollingworth N.E. and Hills D.A., “Forces in Heavy-duty Drive Chain During Articulation,” Proe Instn Mech Vol. 200 No
C5,1985.
[8]. Jagtap M. D., Gaikwad B. D., Pawar P. M. “Study of Roller Conveyor Chain Strip under Tensile Loading”, IJMER, ISSN: 2249–
6645, Vol‐4, Issue‐5,May 2014.
[9]. Jagtap M. D, Gaikwad B. D, Pawar P. M, B. P Ronge “Use of Strain gauges to analyse the behaviour of roller conveyor chain
strip”, International Conference on Computer Science and Mechanical Engineering, 10th August 2014, Jaipur, India, ISBN: 978-93-
84209-42-1.

Design And Analysis Of Chain Outer Link By Using Composite Material

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Design And Analysis Of Chain Outer Link By Using Composite Material