Transient Elasto-Dynamic Response of a Circular Crack in a Thick Plate Under Torsion

[+] Author and Article Information
E. P. Chen

Systems Safety Technology Division 4442, Sandia Laboratories, Albuquerque, N.M. 87185

J. Pressure Vessel Technol 101(3), 207-209 (Aug 01, 1979) (3 pages) doi:10.1115/1.3454624 History: Received March 01, 1979; Online October 25, 2010


The elasto-dynamic response of a thick plate under torsion is considered in this study. A penny-shaped crack is assumed to exist in the center of the plate such that the problem is axisymmetric in nature. The crack is pressurized suddenly along its surfaces resulting in transient conditions. This problem is also equivalent to that of sudden appearance of a crack in the loaded plate. Hankel and Laplace transforms are used to reduce the problem to the solution of a pair of dual integral equations. A numerical Laplace inversion routine is used to recover the time dependence of the solution. The dynamic stress intensity factor is determined and its dependence on time and geometry is discussed.

Copyright © 1979 by ASME
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