Design Optimization And Dynamic Analysis Of Composite Leaf Spring Using Fea

  Kolli Suribabu,  K Sandeepsunandh,  G Suneel Kumar

A leaf spring is a simple form of suspension springs, commonly used in automobiles. There are different types of leaf springs and out of those the commonly used type is the semi elliptic type and the two forms of leaf springs that are mainly used under semi elliptic type are multi leaf springs and mono leaf springs. In this project, first a four leaf steel spring is designed by considering the design parameters used in rear suspension of light vehicles and is analyzed. First static analysis is carried out for steel spring. By considering the results of stresses and deflections of steel leaf spring, an optimized composite leaf spring made from fiber glass with epoxy resin i.e. E-glass/epoxy is designed. Main consideration is given to optimization of spring geometry. The main objective is to design a spring with minimum weight and minimum stresses and deflections for the given external forces. Also the modal analysis is carried out for both the steel and composite springs. Harmonic analysis is also carried out for determining the dynamic behavior for both the steel and composite springs. Transient analysis for both the steel and composite springs is also done for determining the dynamic response under time varying loads. In addition to that four different composite materials like S2-glass/epoxy, carbon/epoxy, graphite/epoxy, boron/aluminium are taken after optimum design and static analysis, modal analysis, harmonic analysis and transient analysis are carried out for all the composite materials and the results are compared for steel and all the composite materials. The main objective is to compare all the results of static analysis, modal analysis and transient analysis for steel and all the composite materials and to conclude which one is best suitable for the leaf spring. It is identified that boron/aluminium and graphite/epoxy are best suitable for the leaf spring.

Keywords- Leaf spring, Epoxy, Carbon, Graphite, Static Analysis, Model Analysis, Transient analysis

Unique Identification Number - IJEDR1804025
Page Number(s) - 138-144
Pubished in - Volume 6 | Issue 4 | November 2018
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Kolli Suribabu,  K Sandeepsunandh,  G Suneel Kumar,   "Design Optimization And Dynamic Analysis Of Composite Leaf Spring Using Fea", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.6, Issue 4, pp.138-144, November 2018, Available at :http://www.ijedr.org/papers/IJEDR1804025.pdf