Dynamic Stresses Created by a Moving Crack

[+] Author and Article Information
B. R. Baker

Lockheed Missiles and Space Division, Sunnyvale, Calif.

J. Appl. Mech 29(3), 449-458 (Sep 01, 1962) (10 pages) doi:10.1115/1.3640588 History: Received May 16, 1961; Online September 16, 2011


A solution is obtained for the case in which a sem-infinite crack suddenly appears and grows at constant velocity in a stretched elastic body. The problem, one of mixed boundary values on a half plane, is solved by transform methods including the Weiner-Hopf and Cagniard techniques. Among the graphical results presented is the time variation of the transverse stress at a fixed point on the line of fracture as the tip of the crack approaches. Asymptotic forms for the stresses near the crack tip are also obtained and are compared with results of other studies in crack propagation.

Copyright © 1962 by ASME
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