LIGHTWEIGHT COMPOSITE LEAF SPRINGS FOR IMPROVED VEHICLE PERFORMANCE
Abstract
The use of fibre reinforced polymer (FRP) composites in the manufacturing of leaf springs for automotive suspension systems has gained significant interest due to their high strength-to-weight ratio, excellent fatigue resistance, and durability. This paper presents a study on the dynamic behavior and mechanical properties of composite leaf springs that can improve the performance of heavy loaded vehicles. The manufacturing process of FRP leaf springs and the comparison of their properties with conventional EN45 steel are discussed. The analysis of FRP leaf springs using CAD software, SOLIDWORKS and ANSYS workbench, indicates that the composite material reduces interleaf friction, resulting in improved riding qualities and fuel efficiency. Various types of matrices and fibers suitable for making composite leaf springs, such as S-glass and LY556 epoxy resin, are also evaluated. The results indicate that composite leaf springs can reduce the unsprung weight of automobiles and improve their performance through their high elastic strain energy storage capacity. The study concludes that the use of FRP composites in the manufacturing of leaf springs is a promising approach for weight reduction without compromising the load carrying capacity and stiffness of the suspension system.
