Design and Analysis of Leaf Spring

Abstract

A multi-leaf spring is one of the most important components of automobile suspension system. Leaves are basically a
series of flat plates, usually of semi-elliptical shape. Generally, a multi-leaf spring used in automobile suspension, consists of two
types of leaves i.e., graduated-length leaves and full-lengthleaves.Thepresentworkisanattempttoestimatethe
magnitudeofbendingstressesintheabove-mentionedleavesfor a semi-elliptic multi-leaf spring made of steel. A lot of research work
has been carried out in the context of leaf spring considering its material and a significant progress has been observed in the field of
weight reduction, improvement of load carryingcapacitywhenwereplacethematerialofthespringby any advanced material like
composites as E- glass/epoxy, carbon/epoxy etc. Finally referring to the results obtained in these research studies, the present work
proposes a new idea regarding the construction of multi-leaf spring based on practical applications. Dimensions of the multi-leaf
spring are taken from practical understanding and calculate dimension manually from standard chart of automobile spring.
Themulti-leaf spring was modeled in CATIA V5R18 and the same were analyzed under similar conditions using ANSYS
(Workbench 12.0) software considering structural-steel as the spring material.