Abstract: Leaf springs are one of the oldest suspension components which are still frequently used, especially in automobile vehicles. These are used to absorb the fluctuating loads from the vehicle. Leaf spring is also known as laminated spring or carriage spring or flat spring. The main function of leaf spring is not only to support vertical load but also to isolate road induced vibrations. It is subjected to millions of load cycles leading to fatigue failure. In this connection an attempt is made to study the design and analysis of master leaf spring Suspension failure including bushes and U-bolts. Propose the improved design of leaf spring, bushes & its installation. This work is carried out on a master leaf spring used by a commercial vehicle. The finite element modelling and analysis of a master leaf spring has been carried out. The material of the leaf spring is SUP9.The FE model of the leaf spring has been generated in CATIA or Pro-E and imported in ANSYS- for finite element analysis, which are most popular CAE tools. The FE analysis of the leaf spring has been performed by discretization of the model in infinite nodes and elements and refining them under defined boundary condition. Bending stress and deflection are the target results. A comparison of both i.e. experimental and FEA results have been done to conclude.
Keywords: Leaf springs, suspension, automobile vehicles, vibrations, cycles leading, U-bolts.
Title: Design of rear suspension system of car Master leaf spring by using the bump load
Author: Miss. Dipmala Savale, Mr. P. G. Damle
International Journal of Mechanical and Industrial Technology
ISSN 2348-7593 (Online)
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