A heavy rotating wheel which increases the momentum and provides greater stability or acts as a reservoir of available energy is termed as a 'Flywheel'. The rotational speed of the rotor coupled with the material strength of flywheel directly determines the kinetic energy level that could be produced.This paper mainly focuses on investigating the effects of flywheel geometries and various materials on the capacity of flywheel storing / delivering of maximum kinetic energy. In this paper, the flywheel is redesigned for a given dimensions and geometries of three cross-sections namely; rectangular, diamond-shaped and elliptical using 3D modelling software SOLIDWORKS 2015. After performing series of finite element analysis, it was observed that with the change in flywheel geometry and its material, there is a significant effect on the performance with a reduction in weight of the flywheel. This paper particularly examines the three different geometries of flywheel coupled with two different materials namely Cast Iron and Graphene.It was found that diamond shaped flywheel stores specific kinetic energy of 21545.69 KJ/kg. It was also observed that there was reduction in the weight of the flywheel by 88%.
Keywords: Energy storing capacity, Flywheel geometry, Finite Element Analysisand Graphene.