| 内压作用下斜接弯管纵向半穿透裂纹应力强度因子研究 |
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| 引用本文： | 王冉,李惠荣,闻拓.内压作用下斜接弯管纵向半穿透裂纹应力强度因子研究[J].化工装备技术,2012,33(4):14-17. |
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| 作者姓名： | 王冉 李惠荣 闻拓 |
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| 作者单位： | 大连理工大学化工机械学院 |
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| 摘 要： | 采用三维有限元技术,应用ANSYS对内压作用下含纵向半穿透裂纹斜接弯管的应力强度因子进行了系统的分析。建立了三维有限元裂纹模型,对裂纹前沿应力强度因子的影响因素进行了研究,分析了不同内压下无量纲参数裂纹相对深度a/t、裂纹相对形状b/a、管壁相对厚度Do/t对应力强度因子的影响。
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| 关 键 词： | 斜接弯管 应力强度因子 半穿透裂纹 有限元分析 管道 |
Study on the Stress Intensity Factor of Axially Part Through-wall Cracks on the Mitred Bend under Internal Pressure |
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| Wang Ran
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Li Huirong
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Wen Tuo.Study on the Stress Intensity Factor of Axially Part Through-wall Cracks on the Mitred Bend under Internal Pressure[J].Chemical Equipment Technology,2012,33(4):14-17. |
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| Authors: | Wang Ran Li Huirong Wen Tuo |
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| Affiliation: | Wang Ran Li Huirong Wen Tuo |
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| Abstract: | The finite element method has been used to study the stress intensity factor（SIF） of axially part through-wall cracks located on the inner surface of a mitred bend under internal pressure.A 3D finite element model is established to investigate the SIF of the crack front.And the effects of dimensionless parameters on the stress intensity factor under different internal pressure,such as crack relative depth a/t,crack aspect ratio b/a and wall relative thickness Do/t are analyzed. |
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| Keywords: | Mitred bend SIF Part through-wall crack Finite element method Pipeline |
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