Abstract
The combustion of fuel takes place inside the cylinder with the oxygen of the air, producing a very high-pressure combustion gas. The combustion gas does work on the piston and then passes through the connecting rod to the crankshaft. The reciprocating translational motion of the piston may damage the connecting rod. A simulation using ANSYS was performed on each of the three connecting rod materials. Results showed that the maximum deformation occurred in the connecting rod made of structural steel, aluminium alloy, and titanium alloy was 0.239 mm, 0.672 mm, and 0.496 mm, respectively.
Highlights
Piston utilises one or more cylinders in which the reciprocating translational motion of the piston is converted to rotational motion by the crankshaft
The reciprocating translational motion of the piston results in rotational motion at the crankshaft and vice versa, the rotation of the crankshaft causes the translational motion of the piston [1]
Materials commonly used for making connecting rods are structural steel, aluminium alloy, and titanium alloy [4]
Summary
Piston utilises one or more cylinders in which the reciprocating translational motion of the piston is converted to rotational motion by the crankshaft. The combustion gas does work on the piston and passes through the connecting rod to the crankshaft. The reciprocating motion of the piston may damage the connecting rod [2][3]. A connecting rod should be strong enough to withstand high pressures but light enough to reduce inertia forces. Proper selection of materials is necessary to produce fully functioning connecting rods [4]. The damage analysis was performed using finite element method with ANSYS Workbench 15 [5], and the connecting rod was designed using CAD software called Autodesk Inventor 2014
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