Design and Finite Element Analysis of Single Cylinder Crankshaft Subjected to Dynamic load.

Abstract

The static structural and dynamic loads were analyzed analytically which, results in the load applied to crankpin bearings. The study selection of best material by comparing the Static structural analysis on a crankshaft from a single cylinder crankshaft. The need of load history in the FEM analysis necessitates performing a detailed static and dynamic load analysis. Therefore, this study consists of two major sections: (1) static and load analysis, (2) FEM and stress analysis. In this study static and dynamic simulation was conducted on three crankshafts Forged steel (AISI 1045 steel), Ductile cast iron and Medium carbon steel.. Finite element analysis was performed to obtain the variation of stress magnitude at critical locations. Finally select suitable material.The stress and dynamic analysis was done analytically and was verified by simulations in SOLIDWORK which resulted in the load spectrum applied to crankpin bearing. This load was then applied to the FE model in ANSYS, and boundary conditions were applied according to the engine mounting conditions. The analysis was done for different engine speeds and as a result, critical engine speed and critical region on the crankshafts were obtained. The value of von-misses stresses of analysis is less than the material yield stress so this design is safe. By comparing von-mises stress and deformation values, from three different materials Therefore the finite element results show that the forged steel (AISI 1045 steel material) is the best material of all. The maximum load occurs at the crank angle of 355 degrees for this specific engine. At this angle only bending load is applied to the crankshaft.