Dynamic Stress Intensity Factor for Subsurface Inclined Cracks
Publication: Journal of Engineering Mechanics
Volume 120, Issue 3
Abstract
To gain insight into the phenomenon of the interaction of stress waves with material defect, the transient problem of a half‐space containing a subsurface inclined semi‐infinite crack subjected to dynamic antiplane loading on the boundary of the half‐space is investigated in this study. The solutions are determined by superposition of the fundamental solution in the Laplace transform domain. The fundamental solution is the exponentially distributed traction on crack faces. The exact close form transient solutions of dynamic stress intensity factor are expressed explicitly in time domain. These solutions are valid for an infinite length of time and have accounted for the contributions coming from incident, reflected and diffracted waves. Numerical results of dynamic stress intensity factors are obtained and compared with the corresponding static values. The transient solution is shown to approach the static value after the first few waves interactive with the crack tip have passed.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 120 • Issue 3 • March 1994
Pages: 483 - 498
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Jan 25, 1993
Published online: Mar 1, 1994
Published in print: Mar 1994
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