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Technical Briefs

Hole Crack Problems in Infinite Plate Subjected to Uniform Internal Pressure

[+] Author and Article Information
Xiangqiao Yan, Baoliang Liu

 Research Laboratory on Composite Materials, Harbin Institute of Technology, Harbin 150001, P. R. China

J. Pressure Vessel Technol 133(6), 064502 (Oct 03, 2011) (5 pages) doi:10.1115/1.4003954 History: Received October 15, 2010; Revised March 23, 2011; Published October 03, 2011; Online October 03, 2011

This brief deals with crack(s) emanating from a hole in infinite plate subjected to uniform internal pressure. Such a crack problem is called a hole crack problem for short. By using a hybrid displacement discontinuity method (a boundary element method) proposed recently by Yan, three hole crack problems (an elliptical hole crack problem, a rhombus hole crack problem, and a triangle hole crack problem) in infinite plate subjected to uniform internal pressure are analyzed in detail. By changing hole geometry form and hole geometry parameters and by comparing the stress intensity factors (SIFs) of the hole crack problem with those of the center crack problem, the effect of the hole geometry form and hole geometry parameters on the SIFs is revealed. It is found that a hole has a shielding and an amplifying effect on the SIFs of crack(s) emanating from the hole. The shielding and amplifying effects are varied with hole geometry form and hole geometry parameters.

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Copyright © 2011 by American Society of Mechanical Engineers
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Figures

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Figure 1

Hole crack problems in infinite plate subjected to uniform internal pressure p: (a) a pair of cracks emanating from an elliptical hole; (b) a pair of cracks emanating from a rhombus hole; (c) and a crack emanating from a triangle hole

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Figure 2

Normalized SIFs of a pair of cracks emanating from an elliptical hole in infinite plate subjected to uniform internal pressure p

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Figure 3

Normalized SIFs of a pair of cracks emanating from a rhombus hole in infinite plate subjected to uniform internal pressure p

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Figure 4

Normalized SIFs of a crack emanating from a triangle hole in infinite plate subjected to uniform internal pressure p

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Figure 5

Normalized SIFs of circular hole crack, square hole crack, and triangle hole crack

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