Analysis of Rigid Flange Couplings | Open Access Journals

ISSN ONLINE(2319-8753)PRINT(2347-6710)

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Analysis of Rigid Flange Couplings

V.G.Vijaya
Department of Mechatronics Engineering, Bharath University, Chennai – 600073, India
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Abstract

This project deals with stress analysis of rigid flange couplings subjected to torsion using ansys. The theory related to the title will be studied from ‘FUNDAMENTALS OF MACHINE DESIGN by T.J.PRABHU, page no- 12.3Analytical solution will be obtained. To obtain computer solution ANSYS will be used. A comparison of results obtained from 2 & 3 will be presented.

I.INTRODUCTION

A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. Rigid flange coupling are designed for heavy loads or industrial equipment. When joining shafts within a machine, mechanics can choose between flexible and rigid couplings. The connecting methods for flange couplings are usually very strong because of either the pressure of the material or the sometimes hazardous nature of materials passed through many industrial piping systems.

II.DESIGN AND CALCULATION

Input Parameters

Material: Mild Steel
Power transmit: 80 kw at 200 rpm
Allowable shear stress in shaft: 45 N/mm2
Allowable shear stress for key material: 45 N/mm2
Crushing stress for bolt and key: 160 N/mm2
Shear stress for bolt material: 30 N/mm2
Shear stress for cast iron: 8 N/mm2

Calculation

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There are several methods analysis software’s have been used for analyzing. In this project we are using Ansys software for analyzing. Ansys is a leading finite element analysis software developed by ansys inc. it is use friendly graphical user interface package. In a linear static we determine the stresses, displacements, strain and reaction in the fem. Static analysis deals with computation of displacement and stress due to static loads refers to loading but doesn’t cause inertial or damping effects to be significant for consideration in the analysis. The material
The material used here is grey cast iron, the Poisson’s Ratio of grey cast iron is 0.28 and the Young's Modulus is 1.1e+005 Mpa
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IV.CONCLUSION

It was found that the stress obtained from the Ansys software is slightly less than the stress obtained in the theoretical calculation. The shear stress and crushing results obtained from Ansys was compared with the theoretical calculation as tabulated. Hence the results obtained from Ansys matches theoretical calculations so the design is safe

References

1. T.J.PRABHU ,“ FUNDAMENTALS OF MACHINE DESIGN”,2009

2. PSG College of Technology, “DESIGN DATA BOOK OF ENGINEERS” April 2010