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| Analysis of Stresses Near an Elliptical Hole With a Random MicroCrack |
| ZHOU Sheng,LI Zhaoxia |
| (Department of Engineering Mechanics, Southeast University, Nanjing 210096, China) |
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Abstract Abstract： In view of the problem of analysis of stress field near an elliptical hole with a random microcrack, which existed widely in practical projects, a theoretical model was proposed in this paper. According to local conformal properties of microcrack in smallscale, the approximate composite conformal mapping function was established. By splitting the microcrack and macrohole, different scale stress fields were obtained, which extended the application range of the complex function method. The research results show that the stress fields and stress intensity factor (SIF) near the microcrack can be obtained by constructing and scale separating composite conformal mapping function. On the condition that the infinite plane containing an ellipse hole with a random microcrack is under vertical uniform load, the bigger the ratio of long axis and short axis of ellipse hole is, the faster the KI is decreased around the edge of ellipse, and the greater the maximum is. When the ratio is sufficiently small, the microcrack position does not affect stress intensity factor of the microcrack.
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Received: 23 December 2014
Published: 29 February 2016
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| [1] |
HE Shijiu,ZHANG Xiaojing,WANG Hai. Analytical Methodology of Predicting Mode Ⅰ Stress Intensity Factor for Cracked Panels with Bonded Stiffener[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2016, 50(02): 251-256. |
| [2] |
HUANG Xiang-Long, ZHANG Xiao-Jing, BAI Guo-Juan, XU Wu, WANG Hai. Residual Strength Analysis of Thin-Walled Structures with Multiple Site Damage Based on Crack Tip Opening Angle Method[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(04): 519-524. |
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