VSRD International Journal of Mechanical, Civil, Automobile and Production Engineering, Vol. VI Issue I January 2016 / 1 e-ISSN: 2249-8303, p-ISSN: 2319-2208 © VSRD International Journals: www.vsrdjournals.com RESEARCHPAPER STRUCTURE ANALYSIS OF SHOCK ABSORBER SPRING USING FINITE ELEMENT ANALYSIS Vikky Kumhar Department of Mechanical Engineering Christian College of Engineering & Technology, Bhilai, Chhattisgarh, INDIA. Corresponding Email ID: vask82@gmail.com ABSTRACT This paper analyzed the effectiveness of the shock absorber in spring frequency under load condition. The shock absorber is commonly used at all vehicles today. The purpose of this research paper is to investigate and identified the problem in shock absorber spring during ride a motor cycle on bump. After identified problem we can decreases stress, deformation and increases its frequency capability by changing its coil diameter of spring. There are some problem happen at the vehicle when ride at the bumping road condition. One of the problems is that the vehicle bounce continuously more than one times and it is called as bouncing problems. The scope of study for this paper includes, experimental of suspension systems and bouncing problem in vehicle, apply structural analysis and model analysis on the shock absorber spring and application of Finite Element Analysis (FEA). To study the stress pattern of shock absorber spring in its loaded condition, a solid model of Shock absorber is prepared with the help of Creo Parametric 2.0 software. Pattern of stress distribution in 3D model of shock absorber spring is obtained using ANSYS 15.0 software. In this present work, the obtained stresses by using finite element analysis with different coil spring as same material and validate to other research work (reduce stress & Deformation by changing material property. Keywords: Shock Absorber Spring, Stress concentration, Deformation, Frequency and ANSYS (FEA) etc. 1. INTRODUCTION Motivation: Operators of automobile are exposed with high level of vibrations. The driver and bikers work continuously many hours on the automobile, especially during the busy working time. These working conditions not only harm the health and physical condition of the driver, but also create early fatigue and reduce his efficiency. On the other hand, present necessities for lower expense in automobile manufacturing leads to an important requirement for faster transportation. Under these circumstances, upgrading the ride comfort and ride safety of automobiles is an important requirement. This improvement can be achieved by using a good suspension system. Primary conventional vehicles have only the tires as the elastic component between road and tires, whereas tires are unable to provide proper suspension characteristics. Now, modern vehicles are equipped with the different kinds of suspension systems, which are including from the simple seat suspension to the new chassis suspension. Seat and cabin suspensions are able to improve only the ride comfort, whereas chassis suspension can increase road stability besides the ride comfort of tractors. Suspension System: A suspension system or shock absorber is a mechanical device designed to smooth out and dissipate kinetic energy. The shock absorbers function is to absorb or dissipate energy. In a vehicle, it reduces the effect of travelling over rough ground, leading to improve ride quality, and increase in comfort due to substantially reduced amplitude of disturbances. Basic safety and also travelling ease and comfort to get a car’s motorist are usually equally influenced by the particular vehicle’s suspension method. Safety refers to the vehicle’s handling and braking capabilities. Shock absorbers are a critical part of a suspension system, connecting the vehicle to its wheels. Basically shock absorbers tend to be products which lessen a good behavioural instinct skilled with an automobile, as well as properly absorb the actual kinetic power. Almost all suspension systems consist of springs and dampers, which tend to limit the performance of a system due to their physical constraints. Suspension systems, comprising of springs and dampers are usually designed for passenger’s safety and do little to improve passenger comfort. Objectives of Suspension System:  To provide good ride and handling performance: o Vertical compliance providing chassis isolation o Ensuring that the wheels follow the road profile o Very little tire load fluctuation  To ensure that steering control is maintained during maneuvering: o Wheels to be maintained in the proper position with respect to road surface  To ensure that the vehicle responds favorably to control forces produced by the tires during : o Longitudinal braking o Accelerating forces, o Lateral cornering forces and