STRUCTURAL AND TRANSIENT THERMAL ANALYSIS OF ......RESULTS OF ANSYS 5.4.1. STATIC STRUCTURAL ANALYSIS Figure 4 Deformation of AL alloy Figure 5 Maximum shear stress of AL alloy Figure
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International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 3, March 2018, pp. 962 969, Article ID: IJMET_09_03_098 –Available online at http://iaeme.com/Home/issue/IJMET?Volume=9&Issue=3 ISSN Print: 0976-6340 and ISSN Online: 0976-6359
STRUCTURAL AND TRANSIENT THERMAL ANALYSIS OF PISTON USING ANSYS
WORKBENCH 15.0 I.V.Syeswanth
Assistant Professor, Mechanical Engineering, QIS Institute of Technology, Ongole, India
N. Mani Parasad Assistant Professor, Mechanical Engineering, QIS Institute of Technology, Ongole, India
ABSTRACT The study aims at replacing the aluminum alloy as piston material and replace
with composite materials without affecting the reliability of the component. The objective of the project is to reduce the weight of the piston so as to increase the fuel efficiency by replacing the conventional aluminum material with composites. If engine is the heart of the engine then piston is the most crucial component of the automobile. The piston is designed for a 4 stroke petrol engine using Design data book by PSG publications. The piston is modeled in CATIAV5R20 software by taking the side view of the piston and shaft command is applied to develop the piston. Composite materials are chosen as per the requirement of the piston and Structural and Transient thermal
analysis are performed to study the performance of piston and the results are compared with aluminum alloy to find out the best suitable material. Key words: Piston, CATIA V5R20, Structural Analysis, Transient Thermal Analysis
Cite this Article: I.V.Syeswanth and N. Mani Parasad, Structural and Transient Thermal Analysis of Piston Using Ansys Workbench 15.0, International Journal of
Mechanical Engineering and Technology, 9(3), 2018, pp. 962 969. –
1. INTRODUCTION Piston is one of the most crucial components in mechanical engineering. Piston finds its wide applications in various mechanical systems like IC Engine, Pneumatic cylinders, Hydraulic cylinders etc. The present paper aims at design of piston for automobile applications. Piston is one of the crucial components in the design of IC Engine in an automobile. The function of a piston in an IC engine is to transfer the gases produced in the cylinder to the crank shaft. The
piston designed for IC Engines should possess good strength, thermal properties, and minimum weight. Weight reduction of piston increases fuel efficiency and composite
materials are the best materials for the weight reduction of piston. The main reasons why a piston gets damaged is due to wear and fatigue but more importantly the failure of the piston
is due Mechanical and Thermal Stresses. The piston model of a four stroke petrol engine is designed in CATIAV5 R20 and Simulation software Ansys 15.0 is used to study the
performance of the piston. In Static Structural Analysis of piston a pressure is applied on the top of piston to study the deformation, Stresses. Transient Thermal analysis is performed on the piston to study the thermal effects on the piston. Three different composite which are have suitable characteristics have been identified, analyzed and compared with standard material.
Anup kumar shetty [1] discuses about use of different alloy materials as piston materials and using ANSYS software the best material for piston is chosen based on Static Structural
and Steady State Thermal Analysis. Dilip Kumar Sonar [2] discusses about the failure of piston is due to wear, fatigue load temperature but thermal stresses and mechanical stresses developed in the piston play important more important role in the damage of piston. Isam
Jasim Jaber [3] discusses about replacing the al alloy with composite materials. By using composite materials around 20-40 % weight of the piston is reduced without affecting the
reliability of the piston. Reduction of weight in the piston proved to be efficient in reducing the fuel consumption. P.Viswabharathy [4] discusses about optimizing the piston model using optistruct model in Hyper mesh. The CAD model is created using AUTOCAD software and hyper mesh is used to mesh the design. The result shows that though the weight of the piston is increased the modified design gives reduced fuel consumption and the increase in weight is well with in design consideration.
2. PROBLEM DESCRIPTION The main aim of the project is to replace the Al alloy material of the piston with composite materials to reduce the weight of the piston which decreases the consumption of fuel.
To Design the Model of the piston using PSG DATA book To check the suitability of the composite material without effecting the reliability of the
component
3. SIGN METHODOLOGY DE
Figure 1
Structural and Transient Thermal Analysis of Piston Using Ansys Workbench 15.0
Property Symbol Value units Young’s Modulus of Elasticity E 113800 M Pa
Poisson’s ratio µ 0.342 Density Ρ 443 Kg/
Tensile Yield Strength 880 M pa
5. DESIGN AND ANALYSIS OF PI STON
5.1. DESIGN OF PISTON USING CATIAV5R20 The Design of Piston as per the dimensions calculated from engine specification and designed using PSG Data book is modeled in CATIAV5R20.
The side view of profile of the piston is drawn in sketcher and revolved to get the piston designed. The model is converted into IGES format for importing into Ansys 15.0
Figure 2 Modeled diagram of piston
5.2. ANALYSIS OF PISTON The model design is imported in to ANSYS 15.0 and meshed and the mesh type is tetrahedral (10,128) elements are formed.
Figure 3 Meshing in ANSYS
Structural and Transient Thermal Analysis of Piston Using Ansys Workbench 15.0
5.3. STATIC STRUCTURAL ANALYSIS Structural Analysis is performed to observe the deformation and stresses absorbed by the
piston when a pressure of 3.5MPa is applied on the piston with piston pin being constrained and frictional supports are given for piston ring.
5.3.1. TRANSIENT THERMAL ANALYSIS Transient Thermal analysis is used to determine the temperatures and thermal quantities that changes over time. The loads applied in transient thermal analysis are the function of time. The temperature applied is about 10000C and temperature distribution and heat flux is noted for different element
5.4. RESULTS OF ANSYS
5.4.1. STATIC STRUCTURAL ANALYSIS
Figure 4 Deformation of AL alloy Maximum shear stress of AL alloy Figure 5
Figure 6 Von Moises stress of AL alloy Deformation of AL 4032 Figure 7
Figure 8 Maximum shear stress of AL 4032 Von mosies stress of AL 4032 Figure 9
(MPa) Al alloy 0.0064 61.99 35.79 Al 4032 0.0056 60.98 35.12
AlSic 0.0022 64.03 39.96 Titanium Ti-
6AL-4V 0.0039 61.4 35.45
6.2. THERMAL ANALYSIS
Table 8 Transient Thermal Analysis
Material Heat Flux (W/m2) Al alloy 75.15e5 Al 4032 64.74 e5 AlSic 26.26 e5
Titanium Ti-6AL-4V 8.86 e5 From the above the results it can be concluded that Al alloy can be replaced AlSiC
without effecting reliability of the component.
REFERENCES
[1] Anup Kumar Shetty, Abijeet TK, James William Machado, Shrivathsa, Design and Analysis of Piston using Aluminium Alloys, International Journal of Innovative Research in Advanced Engineering (IJIRAE) ISSN: 2349-2163, Issue 04, Volume 4 (April 2017) (SPECIAL ISSUE)
[2] G.Siva Prasad, K.Dinesh , Achari E.Dileep Kumar Goud, M.NagarajuK.Srikanth, Design and Analysis of piston of internal combustion engine on different materials using cae tool ansys, International Journal of Engineering and Techniques - Volume 2 Issue 3, May - June 2016
[3] Isam Jasim Jaber and Ajeet Kumar Rai, International Journal of Mechanical Engineering and Technology (IJMET), ISSN 0976 6340 (Print) ISSN 0976 6359 (Online) Volume – –
5, Issue 2, February (2014), pp. 64-73 [4] P.Viswabharathy, N.Jeyakumar, P.kannan, A.Vairamuthu, Design and Analysis of Piston
in Internal Combustion Engine Using ANSYS, International Journal of Emerging Technologies in Engineering Research (IJETER) Volume 5, Issue 3, March (2017).
[5] Imad R. Mustafa, Dr. Feirushah Salih. Comparison of Analysis of Folded Plate Structures by Simplified Bending Theory and ANSYS Program. International Journal of Civil
Engineering and Technology, 8(12), 2017, pp. 796-803. [6] Rajesh Prabha N, Edwin Raja Dhas J and Ramanan G, Finite Element Structural Analysis
of Connecting Rod of Aa7075-Tic Composite Using ANSYS, International Journal of Mechanical Engineering and Technology 8(7), 2017, pp. 1102 1110. –