Material Optimization of the Connecting Rod by using Finite Element Approach

International Journal of Research and Scientific Innovation (IJRSI) | Volume VI, Issue II, February 2019 | ISSN 2321–2705

Material Optimization of the Connecting Rod by using Finite Element Approach

Venkatesh C1, A. Jagatheeswaran2

1,2Department of Mechanical Engineering,
Arignar Anna Institute of Science and Technology, Sriperumbudur, Chennai, Tamil Nadu, India

Abstract – Connecting rod is the intermediate link between the piston and the crank. And is responsible to transmit the push and pull from the piston pin to crank pin, thus converting the reciprocating motion of the piston to rotary motion of the crank. Generally connecting rods are manufactured using carbon steel and in recent days aluminum alloys are finding its application in connecting rod. In this work connecting rod material optimization is done by replacing the existing model with aluminum based 6061 – T6 alloy material and SiC reinforced with Zirconium diboride. And it also describes the modeling and analysis of connecting rod. The 3D modeling of the part has been created by using CATIA V5 and FEA analysis was carried out by using ANSYS WORKBENCH. The parameter like von misses stress, von misses strain and deformations were obtained from ANSYS software considering two materials.

Keywords: material optimization, FEA analysis, Catia V5, Al 6061 – T6 alloy and SiC reinforced with Zirconium diboride


A connecting rod is a rigid member 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. Today, the connecting rod is best known through its use in internal combustion piston engines, such as automobile engines. These are of a distinctly different design from earlier forms of connecting rod used in steam engines and steam locomotives.

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