In this research, spur gears made from graphite epoxy normal and shear stresses are examined. The stresses of spur gear are calculated from outer to interior divided into three zones for different angles reinforcement fibres. 3D finite element model (FEM) was used in this study. Also, a novel design, model, and analyse the differential gears by using composite materials. The manual transmission consists of cast iron or mild steel. Composite materials may be an alternative to conventional materials due to the advantages of low weight, rust and less maintenance. Modelling spur gears performed by stable applications and finite element analysis will be performed in Ansys. Eight-node three-dimensional isoperimetric elements are chosen as the finite element method. In the study calculation of normal and shear stresses in different fibre reinforcement orientations has been carried out and are plotted in the graphs.

Keywords : Spur Gear; Composite Material; Stress Analysis; FEM; Steel; Cast Iron.