Stress concentration around a circular opening.

Aman-Ul-Mulk; Siddique-Akbar; Mazhar Rafiq

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Stress concentration around a circular opening.

Author(s)

Aman-Ul-Mulk Mineral Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

Siddique-Akbar Mineral Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

Mazhar Rafiq Mineral Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

Abstract

This study deals with the stress concentration around circular opening using photo elastic method. The Plexiglas with a circular hole at its center was used as model material. This model was subjected to different amount of pointed loads and the resulting fringes were observed and recorded with the help of attached camera. The lateral constraints were assumed to be absent (i.e. M=o). The model material was calibrated for the determination of fringe value "f σ". the variation of angle under observation was from 0 degree to 45 degrees with the horizontal axis. The study reveals that maximum stresses are developed at the boundary of the opening and that the increase in r/a ratio, results in decrease in stress concentration factor. The data recorded was compared with the theoretical values.

Publication Details

Page(s) 1-6

DOI DOI not available

Published Journal: Journal of Engineering and Applied Sciences, Volume: 17, Issue: 2, Year: 1998

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