Design and Analysis of Composite Parabolic Leaf Spring Under Fatigue Load Condition

Suspension is considered as a link between the wheels and the body. It absorbs fatigue loading and energy. Leaf spring is one of the oldest suspension types. Nowadays, parabolic leaf spring is mainly used in heavy load vehicles and machines. Design fundamentals of parabolic leaf spring are based on the strength and comfort. The strength properties of leaf spring are usually determined based on the suspension type and loading. The advantage of the parabolic leaf spring is due to its simple construction, low cost, and easy maintenance. The design also helps in providing the axle support. This paper mainly deals with the suspension uses of parabolic leaf spring. The difference between the normal leaf spring and the parabolic leaf spring is the total number of leaves. A parabolic leaf does not need of more number of leafs because the stress is distribution to the leaf are equally due to its parabolic shape.