International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 04 | Apr 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1822 Analysis of Automobile Rim on Strain criteria S.S. Pote 1 , R.S. Nimse 2 , A.S. Kshatriya 3 , G.D. Shinde 4 1 Ass. Prof. Department of Mechanical Engineering, SIEM, Nashik 422213 (M.S.), India. 2,3,4 Student, Department of Mechanical Engineering, SIEM, Nashik 422213 (M.S.), India. ---------------------------------------------------------------------***---------------------------------------------------------------------- Abstract – In this work the Multi Objective Analysis approach for Replacement of Spot welds by Arc weld on Automobile Steel Wheel Rim using Finite Element Analysis Method will be studied. Spot welded rim must pass certain tests like Weld Strength Test (WST), Dynamic Cornering Fatigue Test (DCFT) and Radial Fatigue Test (RFT). Here we studies the multiple objective for analysis of the rim like in Weld Strength test a shear force is applied on the spot weld using Universal Testing Machine. In dynamic cornering fatigue Test a moment is applied on the rim as specified by the company standards. In Radial Fatigue Test Influence of Tire pressure and vehicle load are studied. We choose three parameters for optimization namely, Length of Arc, Angle of Arc & Thickness of Arc. Finite Element Analysis Models are developed for the tests mentioned. Experiments of three tests will be carry out. FEA results and Experimental results will be compared for best combinations of selected parameters. Also, in DCFT by use of Finite Element Model we will study the pattern of stresses on the rim as well as the disc. In RFT using FEA method we will study influence of maximum tire air pressure and maximum loading conditions. Key Words: Steel Rim, Strain Gauges, CFT, RFT. 1.INTRODUCTION Automobile rim is one of the critical part of vehicle during designing as it has to bear all the vehicle load. Till date Steel Rims are most preferred due to its low manufacturing cost. The conventional method uses Spot- weld method for joining the two parts of Steel Rim, but due to certain disadvantages of Spot-welding method now a days Arc-welding is also used. Wheels can be looked upon as safety related components. Consequently, fatigue performance and state of stress distribution in the rim, under various loading conditions, is a subject of concern. Furthermore, a comprehensive study of performance of the rotating wheel continues to receive significant importance as increased emphasis is laid on decreasing weight by either using lightweight materials or using materials of thin gauge. Although the loads applied on the rotating wheel are complex in nature and the resultant state of stress is usually high, the weight of the rotating body continues to remain as one of the most significant requirements desiring attention. This has necessitated the emergence and use of cast aluminum alloys in both existing and emerging rim designs. Lightweight rims made from a lightweight aluminum alloy are increasingly popular. Further, end-users consider the nature of the rotating wheel on their vehicle as a symbol of status. The sustained drive to reduce fuel consumption provided the impetus for car manufacturers to make rapid strides in altering traditional vehicle designs. Research efforts have found that a smooth outer wheel surface facilitates a reduction in air resistance. The conjoint influence of inflation pressure and radial load on stress and concomitant displacement distribution in the rim of a rotating body, the wheel, is studied. The influence of circumferential angle on stress and displacement distribution is also examined. Influence of tire inflation pressure on performance of the rotating body is rationalized. 1.1 Problem Statement In traditional welding method wheel parts are joined with the help of spot welding. Production time required for wheel parts i.e. wheel hub and wheel rim is few seconds and time required for joining two parts by spot welding is few minutes therefore welding process requires much more time compare to production time which increases holding time on production line. Presently 24 spots are used to join disc and rim on spot weld machine having 3 stations. One cycle of 3 spots requires 6-7 seconds. There are 8 cycles of welding and 7 time indexing. One indexing requires and each indexing takes 4- 5 seconds. Loading and unloading time is near about 3 seconds. So for production of one rim will require near about 94 seconds. Other operations need maximum 35 seconds. Now there is a bottleneck at this stage of production, in a shift with other operations 900 to 960 rims are produced but at welding machine 300 to 306 rims are produced. To cope up with this problem 2 Welding machines are installed still the maximum production of rims is 612 rims per shift. So this thesis aims at replacing spot welding method by arc welding method, which will increase the production rate as compare to spot weld arc weld requires much lesser welding time. If we can replace the spot weld by arc weld by keeping the same weld strength then much more time can be saved. 1.2 Objective a. The objective of theorist to replace tempted by arc weld without affecting the fatigue life of a wheel to improve productivity.