Vishwakarma International Journal on Emerging Technologies 14(2): 53-56(2023) 53 International Journal on Emerging Technologies 14(2): 53-56(2023) ISSN No. (Print): 0975-8364 ISSN No. (Online): 2249-3255 Structural & Thermal Analysis of V6 Engine’s Piston for Different Alloys of Aluminium Anand Vishwakarma 1* , Abhinav Prajapati 1 , Ankush Singh 1 and Amol A. Talankar 2 1 Graduate Scholar, Department of Mechanical Engineering, BGIEM, Jabalpur (Madhya Pradesh), India. 2 Director, Department of Mechanical Engineering, SPU, Balaghat (Madhya Pradesh), India. (Corresponding author: Anand Vishwakarma*) (Received 02 August 2023, Revised 04 September 2023, Accepted 21 October 2023) (Published by Research Trend, Website: www.researchtrend.net) ABSTRACT: The target of this research work is to find out the best suitable material for the piston of an internal combustion engine. In this work, the main challenge is to find out the suitable material for piston which can withstand high thermal and structural stresses and also it should be of minimum weight. For this, we have uses four different alloys of aluminium, namely AlSi, AlMgSi, AlSiC12 and Al6061 have been selected for analysis. The piston has been designed in Solidworks 2021 and then imported that model of piston in ANSYS 14.5 software to perform Static Structural and Steady State Thermal analysis of the piston. For structural analysis, pressure of 6.5 MPa has been applied assuming frictionless supports on its outer surface and the temperature of about 800⁰C on the crown of the piston is assumed for thermal analysis, applying convection in all surfaces of the piston. Final results are like that, the AlSi and AlSiC12 are best suitable materials for the piston in terms of Structural and thermal stresses. Keywords: Piston, Total deformation, Equivalent stress, Total heat flux, Temperature distribution, Solidworks, ANSYS 14.5. Abbreviations: AlSi, Aluminium Silicon, AlMg Si, Aluminium-Magnesium-Silicon alloy, AlSiC12, Aluminium -Silicon -arbide-12, Al606, Aluminium alloy-6061, CAD, Computer Aided Design. INTRODUCTION The internal combustion engine is the main carrier in our society since its invention in the last quarter of the 19 th century. The purpose of I.C. engine is to induce mechanical power from the chemical energy contained in the hydrocarbon fuel which is released during the combustion of the fuel inside the engine’s cylinder. Etienne Lenoir 1859 has successfully developed the first commercial internal combustion engine, however; Nicolaus A. Otto got the credit for the development of the first modern internal combustion engine in 1866. Inside the engine there is one mechanical element known as piston which is the most important part not only for reciprocating engines but also for plunger type pumps, compressors and pneumatic cylinders. The purpose of the piston is to act as a medium to convey the force which is obtained by expansion of gases inside the cylinder to the crankshaft via a piston rod (Kaushik, 2019). The I.C. engine has different types of cylinder arrangements, based on which it is classified in various types. Some select classifications are as follows: (a) Inline (b) Horizontally opposed (c) Radial (d) V type The inline or the straight engine is an internal combustion engine having all cylinders arranged in one row and having no offset. Horizontally opposed engines are too known as Flat engines because, in this type of engines the cylinders are placed on both side of a central crank shaft. The radial engines are the type of reciprocating internal combustion engine. In this, the cylinder “radiates” outward from a central crank case like the spokes of a wheel. A V-engine is an ordinary arrangement for IC engines. It carries two-cylinder chambers usually having the equal count of cylinders in each chamber attached to a single crankshaft. These cylinders chambers are set out at certain angle to each other to form a “V” shape when viewed from the axis of the crankshaft. V engines generally have a shorter length as compared to inline engines; however, the tradeoff is a large width V4, V6 and V8 engines are the most frequent format used in an automobile sector having four, six and eight cylinders respectively (Dhotare et al., 2019). Piston is the mechanical component of an I.C. engine whose work is to transfer the forces to the crankshaft which is generated inside the cylinder after the expansion. The piston reciprocates inside the cylinder and form the gas tight contact through the piston rings (Ajay et al., 2018). Other than I.C. engines, Piston is also used in reciprocating pumps, gas compressors, and in pneumatic and hydraulic cylinders (Dhotare et al., 2019). There are commonly three types of pistons: a. Flat head piston b. Dome head piston c. Dish head piston MATERIALS PROPERTIES Material selection is an important process for designing and manufacturing any mechanical component. Pistons are mostly made of a Cast Aluminium Alloy due to its e t