| 表面椭球凹坑缺陷的三维应力集中分析 |
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| 引用本文： | 官春平.表面椭球凹坑缺陷的三维应力集中分析[J].广东轻工职业技术学院学报,2011(4):13-16,19. |
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| 作者姓名： | 官春平 |
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| 作者单位： | 广东轻工职业技术学院,广东广州510300 |
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| 摘 要： | 凹坑是最为常见的机械零件体积型缺陷。由于凹坑会造成应力集中,导致裂纹萌生,直接影响零部件的使用寿命。因此本文以三维有限元仿真技术分析了表面椭球凹坑缺陷的应力集中问题。研究表明在凹坑附近会产生很大的应力集中,特别是凹坑底部,而且椭球凹坑长短轴上的点的应力集中系数的变化与椭球的长短轴之比呈线性关系。
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| 关 键 词： | 椭球 凹坑 缺陷 应力集中 |
Analysis on Three-Dimensional Stress Concentration of Ellipsoid Surface Notch Defects |
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| Guan Chunping.Analysis on Three-Dimensional Stress Concentration of Ellipsoid Surface Notch Defects[J].Journal of Guangdong Industry Technical College,2011(4):13-16,19. |
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| Authors: | Guan Chunping |
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| Institution: | Guan Chunping(Guangdong Industry Technical College,Guangzhou 510300,China) |
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| Abstract: | Notch is the most common type of volume defects of mechanical parts.The notch will cause stress concentration,lead to crack initiation,directly affect the service life of parts.In this paper,stress concentration of ellipsoid surface notch defect was analyzed by using three-dimensional finite element simulation technology.Research shows that large stress concentration will be produced near the notch,especially in the bottom of notch,and the changes of stress concentration factors of point of long axis and short axis of the ellipsoid notch has a linear relationship with the ratio of long axis and short axis of the ellipsoid. |
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| Keywords: | Ellipsoid notch defect stress concentration |
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