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Dynamic mode I perturbation solution for a moving crack unsteadily

โœ Scribed by Li Xiang-Ping; Liu Chun-Tu

Book ID
104141295
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
905 KB
Volume
34
Category
Article
ISSN
0020-7683

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โœฆ Synopsis

Rice et al. (Journal oJ'Mechanics and Physics of Solids 42, 813-843) analyze the propagation of a planar crack with a nominally straight front in a model elastic solid with a single displacement component. Using the form of Willis et al. (Journal qf the Mechanics and Physics qf Solids 43, 319-341), of dynamic mode I weight functions for a moving crack, we address that problem solved by Rice et al. in the 3D context of elastodynamic theory. Oscillatory crack tip motion results from constructive-destructive interference of stress intensity waves. Those waves, including system of the dilatational, shear and Rayleigh waves, interact on each other and with moving edge of crack, can lead to continuing fluctuations of the crack front and propagation velocity.

๐Ÿ“œ SIMILAR VOLUMES

T-Stress solutions for a semi-elliptical
T-Stress solutions for a semi-elliptical axial surface crack in a cylinder subjected to mode-I non-uniform stress distributions
โœ Toshiyuki Meshii; Tomohiro Tanaka; Kai Lu ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 800 KB

This paper presents the T-stress solutions (T 11 and T 33 ) for semi-elliptical axial surface cracks in a cylinder subjected to mode-I non-uniform stress on the crack surface. Two cylindrical geometries with inner radius (R i ) to wall thickness (t) ratios R i /t = 5 and 10 were considered. The T-st