19 International Journal for Modern Trends in Science and Technology
Design and Analysis of IC Engine Connecting Rod by using Composite Materials
Seeram Srinivas
1| P Satya Lakshmi
2
1,2
Vishaka Institute of Engineering & Technology, Narava, Visakhapatnam, Andhra Pradesh, India.
To Cite this Article
Seeram Srinivas and P Satya Lakshmi, “Design and Analysis of IC Engine Connecting Rod by using Composite Materials”, International Journal for Modern Trends in Science and Technology, Vol. 04, Issue 06, June 2018, pp: 19-25.
The connecting rod is the transitional part between the piston and the crankshaft. . Its essential capacity is to transmit the push and pull from the piston pin to the crank pin, in this way changing over the reciprocating motion of the cylinder into turning movement of the crank. Generally connecting rods are manufactured using Structural steel and recently using aluminium alloys. In this thesis, aluminium alloy is replaced with composite materials like Carbon ceramics and Epoxy Carbon where I section design parameters were changed according to material properties. For design reference Bajaj Pulsar 150cc connecting rod is used.
The connecting rod is designed utilizing PTC Creo software and analysed utilizing ANSYS software. The Analysis carried out on two different materials with thermal and structural loads, the results are compared to the former material and new material found to have better stiffness at less weight.
Copyright © 2018 International Journal for Modern Trends in Science and Technology All rights reserved.
I. INTRODUCTION
A connecting rod is a shaft, which connects a piston to a crank or crankshaft in a reciprocating engine. Together with the crank, it forms a simple mechanism that converts reciprocating motion into rotating motion.
A connecting rod may also convert rotating motion into reciprocating motion, its original use. Earlier mechanisms, such as the chain, could only impart pulling motion. Being rigid, a connecting rod may transmit either push or pull, allowing the rod to rotate the crank through both halves of a revolution. In a few two-stroke engines, the connecting rod is only required to push.
Engine properties Displacement 149 cc
Maximum Power 13.8 Bhp @ 8000 rpm Maximum Torque 13.4 Nm @ 6000 rpm Number of Cylinders1
Ignition 5-Map CDI Bore 57.0 mm Stroke 56.4 mm Pressure calculation
Density of petrol at 288.855 K - 737.22*10-9kg/mm3
Molecular weight M - 114.228 g/mole Ideal gas constant R – 8.3143 J/mol.k From gas equation,
ABSTRACT
Available online at: http://www.ijmtst.com/vol4issue6.html
International Journal for Modern Trends in Science and Technology
ISSN: 2455-3778 :: Volume: 04, Issue No: 06, June 2018
20 International Journal for Modern Trends in Science and Technology PV=m. Rspecific. T
Where, P = Pressure V = Volume
m = Mass
Rspecific= Specific gas constant T = Temperature
But, mass = density * volume m =737.22E-9*180E3
m = 0.1326 kg Rspecific= R/M
Rspecific= 8.3143/0.1326 Rspecific= 62.702
P = m.Rspecific.T/V
P = 0.1326*62.702*288.85/180E3P = 13.34MPaP
~ 13 MPA
II. CONNECTING ROD DESIGN IN PTC CREO
Step 1 draw a sketch
21 International Journal for Modern Trends in Science and Technology III. ANALYSIS OF CONNECTING ROD IN ANSYS
Step 1 Geometry Imported
Step 2 Geometry Meshed
Epoxy carbon connecting rod without I section
Geometry imported and meshed
22 International Journal for Modern Trends in Science and Technology Step 3 Temperature Loads
Step 4 Compressive loads applied along with temperature loads
Temperature Distribution 1. Structural steel
2. Al6062
3. Carbon ceramics
4. Epoxy carbon (without I section)
Total Deformation
23 International Journal for Modern Trends in Science and Technology 1. Structural steel
2. AL6062
3. Carbon ceramics
1. Epoxy Carbon(without I section)
Elastic Strain 1. Structural Steel
2. AL6062
3. Carbon Ceramics
24 International Journal for Modern Trends in Science and Technology 1. Epoxy Carbon(without I section)
Equivalent Stress 1. Structural steel
2. AL6062
3. Carbon Ceramics
1. Epoxy Carbon(without I section)
Analysis results comparison
1 2 3 4
168.5
43.5 36.16 44.71
WEIGHT
1 2 3 4
234.7 238.92
295.5
54.6
STRESS
Materia l Name
Weight(
g)
Total deformati
on (mm)
Strain Mm/m
m
Stres s MPa Structur
al steel
168.5 0.109 0.001 234.7 Al6062 43.5 0.139 0.003 238.9
2 Carbon
ceramic
36.16 0.373 0.009 295.5
Epoxy carbon
44.71 0.057 0.006 54.6
25 International Journal for Modern Trends in Science and Technology IV. CONCLUSION
By comparing and analysing the results, weight of the connecting rod reduced by around 75% and Epoxy carbon connecting rod without I section can bear high amounts stress and manufacturing this type of composite connecting is simple without I section.
REFERENCES
[1] International Journal of Advances in Science Engineering and Technology, ISSN:
2321-9009Volume- 3, Issue-2, April-2015 FINITE ELEMENT ANALYSIS OF CONNECTING RODUSING ANSYS nikhilu.thakare, nitin d. bhusale, rahulp.shinde, maheshm.patil
[2] International Journal of Automotive Engineering and Technologies Vol. 4, Issue 4, pp. 245–253,2015 Original Research Article Fatigue and Structural Analysis of Connecting Rod’sMaterial Due to (C.I) Using FEA Puran Singh, DebashisPramanik, Ran Vijay Singh
[3] International Journal of Emerging Engineering Research and Technology Volume 2, Issue 4, July 2014, PP 242-249 ISSN 2349-4395 (Print) &
ISSN 2349-4409 Numerical and Experimental Analysis of Connecting Rod Fanil Desai
[4] International Journal of Innovative Research in Science, Engineering and Technology Vol. 2, Issue 6, June 2013 ANALYSIS AND OPTIMIZATION OF CONNECTING ROD USING ALFASiC COMPOSITES Kuldeep B1, Arun L.R2, Mohammed Faheem3
[5] International journal of innovations in engineering research andtechnology [ijiert] issn: 2394-3696 volume 3, issue 3, march-2016 analysis offatigue failure of connecting rod used in a light commercialvehicle (lcv) through feamr.gajanandinkarrao
[6] International Journal of Modern Engineering Research (IJMER) www.ijmer.com Vol.3, Issue.1, Jan-Feb. 2013 pp-65-68 ISSN: 2249-6645 Analysis of Connecting Rod Using Analytical and Finite Element Method Prof.N.P.Doshi, 1 Prof .N.K.Ingole [7] IOSR Journal of Mechanical and Civil Engineering
(IOSR-JMCE) e-ISSN:
2278-1684,p-ISSN:2320-334X, Volume 10, Issue 1 (Nov. - Dec. 2013), PP 47-51 www.iosrjournals.org Static StressAnalysis of Connecting Rod Using Finite Element Approach AbhinavGautam1, K Priya Ajit2 [8] International Journal of Advanced Mechanical
Engineering. ISSN 2250-3234 Volume 4, Number7 (2014), pp. 782-802 © Research India Publications http://www.ripublication.com Fatigue Analysis of Connecting Rod Using Finite Element Analysis to Explore Weight and Cost Reduction Opportunities for a Production of Forged Steel Connecting Rod Ambrish Tiwari, Jeetendra Kumar Tiwari, Sharad Kumar Chandrakar
[9] International Journal of Mechanical Engineering and Technology (IJMET) Volume 7, Issue 4,July–Aug 2016, pp.212–220, Article ID: IJMET_07_04_022
Available online at
http://www.iaeme.com/ijmet/issues.asp?JType=IJ MET&VType=7&IType=4 Journal Impact Factor(2016): 9.2286 (Calculated by GISI) STUDY AND ANALYSIS OFCONNECTING ROD PARAMETERS USING ANSYS ANIL KUMAR VISHWAKARMA
[10] International Journal of Scientific and Research Publications, Volume 3, Issue 2, February 20131 ISSN 2250-3153 Stress Analysis of Connecting Rod for Weight Reduction- A Review Christy V Vazhappilly*, P.Sathiamurth
1 2 3 4
0.001
0.003
0.009
0.006
STRAIN
1 2 3 4
0.109 0.139
0.373
0.057