Abstract
Stress analysis of a crankshaft using traditional method is complicated and needs modification by considering its stress concentration factors. To solve this problem, the crankshaft strength of a four-cylinder four stroke gasoline engine is modeled and analyzed using finite element method (FEM) in this paper. For this purpose, the crankshaft is modeled using CATIA software in detail. Then, the model is imported in ANSYS. In the recent software, the model is meshed into a number of finite elements. After defining the boundary and loading conditions, the stresses occur in the crankshaft are analyzed in order to identify critical locations on it.
Highlights
Engine crankshaft is an important component of an engine as it converts the reciprocating displacement of the piston to a rotary motion
In the traditional crankshaft stress calculation methods, such as the method of beam supported of both ends and the continuous beam method, the calculation process is complicated and needs to modify the crankshaft stress that calculated by stress concentration factor [2]
Finite element method (FEM) is a numerical calculation method based on variation principle for solving mathematical and physical problems [3]
Summary
Engine crankshaft is an important component of an engine as it converts the reciprocating displacement of the piston to a rotary motion. The crankshaft effectively absorbs forces from the explosion, transmits energy to the engine flywheel, which transfers energy to a shaft connected to the driven machinery [1]. Since the crankshaft experiences a large number of load cycles during its service life, it is important to study and analyze the strength of this component in evaluating their performance and lifetime of the crankshaft. Finite element method (FEM) is a numerical calculation method based on variation principle for solving mathematical and physical problems [3]. It is a powerful tool to analyze various structural problems and provide theoretical basic for the design [4]
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