A New Formula for Determination of Tangential and Residual Stresses around a Hole in Plate for a Variety of Biaxial Loading.

Document Type : Research Studies

Author

Assistant Professor., Mechanical Power Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Abstract

 This work deals with development analytical formula which may satisfy the original problem of both tangential stress distribution as well as residual stress around the boundary of a hole in plate subjected to a variety of biaxial loading.
The developed equation has been employed for computing the tangential stress around a hole for different biaxial loading conditions.
Photoelastic coating technique has been used formeasuring the residual stress that remain in plates after performing a hole by piercing, drilling, forming or machining processes.
Moreover, based on the strain gauge experimental technique the residual stress has been computed.
Comparison of the results indicates the applicability of the developed equation in Computing both Tangential stress distribution as well as residual stress.
Moreover, the use of photoelastic coating technique facilitate the experimental tests and provide full field experimental method for determination of stress distribution at points on the surface and in interior of specimens. Thus, the birefringent coating technique has many advantages for measuring residual stresses as compared to strain gauge method. 

Main Subjects

MEJ- Mansoura Engineering Journal
Volume 18, Issue 2
With Cover
June 1993
Pages 36-48

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