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Fatigue life prediction: A comparative study for a three layer EN45A parabolic leaf spring

There are literally several studies accomplished to predict the fatigue life of leaf springs but estimation of fatigue life of a parabolic leaf spring by using CAE tools has not yet been executed in the past. Parabolic spring is an important component in a vehicle suspension system. | Fatigue life prediction A comparative study for a three layer EN45A parabolic leaf spring Engineering Solid Mechanics 3 2015 157-166 Contents lists available at GrowingScience Engineering Solid Mechanics homepage www.GrowingScience.com esm Fatigue life prediction A comparative study for a three layer EN45A parabolic leaf spring Krishan Kumar and M. L. Aggarwal Assistant Professor Mechanical Deptt. YMCA University of Science amp Technology A Haryana State Govt. University Faridabad Haryana India ARTICLE INFO ABSTRACT Article history There are literally several studies accomplished to predict the fatigue life of leaf springs but Received 6 January 2015 estimation of fatigue life of a parabolic leaf spring by using CAE tools has not yet been Accepted 10 May 2015 executed in the past. Parabolic spring is an important component in a vehicle suspension Available online system. It needs to have excellent fatigue life and in today s scenario manufacturers rely on 12 May 2015 Keywords constant loading fatigue analysis. The objective of this work is to perform the fatigue analysis Parabolic leaf spring of parabolic leaf spring by three different methods where CAE analysis is performed to observe Fatigue life the distribution of stress fatigue life and damage using Goodman approach. In this work fatigue CAE analysis life of the parabolic leaf spring is determined as per SAE spring design manual and experimentally by testing on full scale fatigue testing machine. ANSYS is used for CAE solution for the prediction of leaf springs fatigue life considering stress theory. The fatigue life estimated by all three modes is then compared for the purpose of validation. The methodology used in this paper brings a practical approach to the professionals in the industries who are engaged for design of mechanical components. 2015 Growing Science Ltd. All rights reserved. 1. Introduction A spring is an elastic devise used to store mechanical energy usually made out of hardened steel. .