A leaf spring is a simple form of spring, generally used for the suspension in Automotive. It is also used as a shock absorber in Automotive. It looks like a slender arc-shaped having length of a spring steel of rectangular cross-section. The automobile industry has shown increased interest in the replacement of steel springs with fiberglass reinforced composite leaf springs. Therefore, the aim of this project is to analyse leaf spring and to replace the material by composite. A single leaf, variable thickness spring of glass fibber reinforced plastic (GFRP) with similar mechanical and geometrical properties of the multi-leaf steel spring.

This project is based on a complete design and analysis of leaf spring. Here Finite element models were developed to optimize the material and geometry of the composite elliptical spring based on the spring rate, long life and shear stress. The influence of the elasticity ratio of performance of composite elliptical springs was investigated computationally