FATIGUE ANALYSIS OF CHAIN SPROCKET USING FINITE ELEMENT ANALYSIS

Abstract

In any automobile the power is transmitted from one shaft to another by using chain sprocket assembly.
Chain assembly consists of chain, driving sprocket and driven sprocket. The driving sprocket is connected to engine
output shaft, which transfer power to driven sprocket by chain. Further this driven sprocket transfer power to drive shaft.
The material used for driving sprocket is mild steel. The design of this sprocket plays a vital role in efficient running of
the automobile. Because of this reason careful efforts are required in design chain sprocket. In this paper a two wheeler
automobile chain sprocket is designed and detailed finite element analysis is carried out to calculate stresses and
deflections on the sprocket. Later the analysis is extended to fatigue analysis to estimate the life of the chain sprocket.
Initially, the 3D model of the chain sprocket is done from design obtained from previous literatures. Finite element
analysis is carried out by applying the forces evaluated from the calculations. From the analysis principle stresses are
calculated and are used as fatigue inputs for making Goodman diagram. NX-CAD software is used for doing 3D model
and Ansys is used for doing finite element analysis.