Research Information System
6th International Mediterranean Science and Engineering Congress (IMSEC 2021), Antalya, Turkey, 25 - 27 October 2021, pp.579-584, (Full Text)
The crankshaft is defined as one of the large components with complex geometry in the internal combustion engine, which is
subjected to cyclical loads in the form of bending and torsion. Crankshafts have usage areas in various branches of engineering
where there is a need to rotate or reverse the reciprocating linear motion. In this paper, the design of the crankshaft of a 4-cylinder
diesel engine choosing three different materials and the fatigue analysis of the designed crankshaft are discussed. With the modeling
and analysis of the crankshaft, the effect of loads on the crankshaft will be determined, various materials will be compared and an
alternative way to future fatigue analysis studies will be presented. Firstly, the original design of the crankshaft was made through
the CATIA (Computer Aided Three-Dimensional Interactive Application) program, and then the analyzes were carried out using
ANSYS software using the finite element method (FEM). In the analysis of the deformation and stresses in the results, the finite
element method will provide the highest stress concentration regions to find the most compatible material. In the results, damage,
life, equivalent stress, total deformation, and safety factor values of three different materials are presented. The analysis results
showed that 42CrMo4 steel defined on the crankshaft had higher fatigue life and safety factor values than SAE – AISI 1046 and AISI
4340 materials.