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| Study on stress intensity factor with single edge defect crack under tensile load |
| Received:September 27, 2013 Revised:November 04, 2013 |
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| DOI：10.7511/jslx201501014 |
| KeyWord:crack stress intensity factors boundary element displacement discontinuity crack tip element |
| Author | Institution |
| 刘宝良 |
哈尔滨工程大学 航天与建筑工程学院, 哈尔滨 ;黑龙江科技大学 理学院, 哈尔滨 |
| 邹广平 |
哈尔滨工程大学 航天与建筑工程学院, 哈尔滨 |
| 闫相桥 |
哈尔滨工业大学 复合材料与结构研究所, 哈尔滨 |
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| Abstract: |
| This paper deals with the rectangular tensile sheet with the single edge defect (crack,half-circular-hole crack and half-square-hole crack) by using the hybrid displacement discontinuity method (a boundary element method) proposed recently by the author.Detail solutions of the SIFs of the three plane elastic crack problems are given,which can reveal clearly the effect of geometric parameters of the cracked bodies on the SIFs.By comparing the calculated SIFs of the single edge half-circular-hole crack and the single edge half-square-hole crack with those of the single edge crack,in addition,a shielding effect of the half-circular hole and the half-square hole on the SIFs of the single edge crack is discussed.It is illustrated that the boundary element method is simple,yet accurate for calculating the SIFs of complex crack problems in finite plate. |