REVIEW ON DESIGN OPTIMIZATION AND ANALYSIS OF COMPOSITE LEAF SPRING FOR LIGHT WEIGHT VEHICLE

Authors

Mr. Mangesh Angadrao Bidve, Scholar
Department of Civil Engineering (Ph.D.), Oriental University, Indore (M.P), India.

Dr. Manish Billore, Guides
Department of Civil Engineering (Ph.D.), Oriental University, Indore (M.P), India.

Abstract

Leaf springs are commonly used in the suspension system of automobiles and are subjected to millions of varying stress cycles leading to fatigue failure. If the unspring weight (the weight, which is not supported by the suspension system)is reduced, then the fatigue stress induced in the leaf spring is also reduced. Leaf spring contributes for about 10-20% of unspringweight. Hence, even a small amount of weight reduction in the leaf spring will lead to improvements in passenger comfort as well as reduction in vehicle cost. In this context, the replacement of steel by composite material along with an optimum design will be a good contribution in the process of weight reduction of leaf springs. Different methods are in use for design optimization, most of which use mathematical programming techniques. This paper presents an ACO approach for the design optimization of composite leaf spring. On applying the ACO, the optimum dimensions of a composite leaf spring have been obtained, whichcontributes towards achieving the minimum weight with adequate strength and stiffness. A considerable reduction of weight is achieved when a seven-leaf spring is replaced with a mono-leaf composite spring under identical conditions of design parameters and optimization.