ANALYSIS OF DEEP GROOVE BALL BEARINGBASED ON STATIC, DYNAMIC AND FREQUENCY ANALYSIS USING ANSYS R3

Ashutosh Bhalerao and Sumeet Mujumdar BE, Mechanical Department, Rajiv Gandhi Institute of Technology, India. ...................................................................................................................... Manuscript Info Abstract ......................... ........................................................................ Manuscript History Received: 30 November 2019 Final Accepted: 31 December 2019 Published: January 2020


ISSN: 2320-5407
Int. J. Adv. Res. 8(01), 1065-1072 1066 analysis by inference. It has since been recognized that the life of the ball set concerning the races is different for a deep-groove ball bearing and an angular contact ball bearing as well as being dependent on the relative contact (Hertz) stresses at the inner and the outer races. However, the standard does not distinguish between the deep-groove (radially loaded) nor does it separate the effect of the ball life from that of the raceway. Analysis report determined the effect of the ball-race conformity on the ball bearing life and considers the life of the ball set independent of the lives of the races

Methodology:-
The methodology starts with the appropriate selection of ball bearing based on real-life applications. Initially, the ball bearings are classified and the simplest yet effective bearing i.e. DGBB is chosen. The next step is to select a suitable application on the selected ball bearing. The application is restricted to industry and accordingly, four major applications are found. The next step is based on the calculations of Static, dynamic and natural frequency on the given load conditions. Based on it the graphical calculations are performed on the software and it is compared with analytical results. The results portray the differences obtained in the software and the analytical calculations and based on it a suitable action is recommended in the conclusion. The Solidworks software is developed by Dassault Systems. The software has been advocating the convenience and efficiency of the 3D CAD software. It is a simple and effective user-friendly software used for designing process. In the process of design, using feature, size and constraint function, the model is designed. It is also used widely for modal analysis of various mechanical components. The designed model can be assembled with the help of assembly tool provided in Solidworks by applying number of relationship and constraints between mating parts.
Ansys Software: ANSYS Mechanical Enterprise is the flagship mechanical engineering software solution that uses finite element analysis (FEA) for structural analysis using the ANSYS Mechanical interface [2]. It covers an enormous range of applications and comes complete with everything you need from geometry preparation to optimization and all the steps in between. With Mechanical Enterprise one can model advanced materials, complex environmental loadings and industry-specific requirements in areas such as offshore hydrodynamics and layered composite materials.
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In the transient domain both implicit and explicit solvers enable you to model time dependent scenarios. The Rigid Body Dynamics capability lets you solve mechanisms rapidly. It also enables to include Component Mode Synthesis (CMS) parts to add flexibility to models while still accelerating the simulation. Acoustic simulations can be carried out to understand the vibroacoustic behavior of systems, with or without structural pre-loading. One can also create waterfall plots to more conveniently understand results over varying frequencies.

Three-Dimensional Model:
The 3-D model is created using Solidworks tools. The design specification is shown are shown in Table 4

Analytical Calculation:
For a given application the following standard data is considered of the maximum equivalent load (P e ) that the bearing can sustain is 2.2 KN, the speed (N) of motor is 1440 rpm. This bearing is subjected to pure radial load thus no effect of axial load.

Standard data from PSG Design data book [3] for 6312 bearing is taken as given below:
Dynamic load (C) =6400 kgf Static load (C 0 ) = 4800 kgf

Radial load (Fr) for given bearing can be calculated as:
Pe= (VXF r + YF a ) S …. (1) Where V= Ring rotating factor (as outer ring is fixed and inner ring is rotating) = 1.1 X=Dynamic Radial Load Factor (bearing subjected to pure radial load) =1 Y=Dynamic Axial Load factor (bearing subjected to pure radial load, no axial load) = 0 F r = Radial Load F a =Axial Load S = Service factor for medium duty = 1.