Experimental and Analytical Investigation of Dynamic Stress Concentrations at a Circular Hole

[+] Author and Article Information
S.-J. Fang, J. H. Hemann, J. D. Achenbach

Department of Civil Engineering, The Technological Institute, Northwestern University, Evanston, Ill.

J. Appl. Mech 41(2), 417-422 (Jun 01, 1974) (6 pages) doi:10.1115/1.3423303 History: Received October 01, 1972; Online July 12, 2010


The hoop stresses which are generated at the circumference of a circular hole in a large plate when a pressure wave is diffracted, were measured by photoelastic methods. A plane pressure pulse of short duration and approximately triangular shape was generated by the detonation of a strip-explosive over one edge of the plate. Measurements were carried out for three values of the ratio, 2a/Λ, of the diameter of the hole to the length of the stress pulse. Dimensionless hoop stresses are plotted versus the time after detonation and versus the ratio 2a/Λ. The dimensionless hoop stress decreases as 2a/Λ increases. The measured values show good agreement with analytical computations.

Copyright © 1974 by ASME
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