Abstract
KL crankshaft is one of the core parts of an internal combustion diesel engine for truck. The crankshaft bears complex loads and it’s working environment is harsh. During the use of the KL crankshaft, fracture failure occurs multiple times. Firstly, physical and chemical analysis of KL crankshaft were done, fatigue failure is the main initial reason of crankshaft. Then the modal analysis and fatigue analysis of crankshaft were calculated by FEM software of ANSYS Workbench. We tested the bending and torsion fatigue on the KL crankshaft to verify the simulation results. Based on the physical and chemical analysis, simulation analysis and failure test of the KL crankshaft, it is concluded that the main factor of crankshaft failure is fatigue caused by overload.
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