| 压力容器接管区应力强度因子的数值分析 |
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| 引用本文： | 崔建华.压力容器接管区应力强度因子的数值分析[J].合肥工业大学学报(自然科学版),2005,28(12):1582-1584. |
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| 作者姓名： | 崔建华 |
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| 作者单位： | 安徽建筑工业学院,土木工程系,安徽,合肥,230022 |
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| 基金项目： | 安徽省自然科学基金资助项目(050440506)，安徽省教育厅自然科学基金资助项目(2006kj291B) |
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| 摘 要： | 该文针对压力容器接管区高峰应变的特征,在不同孔径异形模拟试板应力应变场的光弹性分析基础上,应用奇异等参元,分析了裂纹尖端处应力强度因子,数值结果表明,与双参数法获得的应力强度因子较为吻合,为压力容器接管部位的设计和裂纹疲劳扩展分析提供了可靠依据。
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| 关 键 词： | 压力容器 应力强度因子 有限元 数值分析 |
| 文章编号： | 1003-5060(2005)12-1582-03 |
| 修稿时间： | 2005年6月24日 |
Numerical analysis of stress intensity factors at the junction of the pressure vessel shell and the nozzle |
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| CUI Jian-hua.Numerical analysis of stress intensity factors at the junction of the pressure vessel shell and the nozzle[J].Journal of Hefei University of Technology(Natural Science),2005,28(12):1582-1584. |
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| Authors: | CUI Jian-hua |
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| Abstract: | In view of the severe stress concentration and the characteristic of high strain gradients at the junction between the pressure vessel shell and the nozzle,photoelastic analysis of the stress-strain field of the simulating special shape plate of pressure vessel nozzles is carried out,two types of special shape plates is studied and the finite element models are established by using the singular isoparametric element.The stress intensity factors around cracks are obtained by means of the FEM which guarantees harmony of conjoint elements.The calculation results are in accordance with those by the double parameters method.This study provides a reliable basis for the design of the junction between the pressure vessel shell and the nozzle and the analysis of extending cracks. |
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| Keywords: | pressure vessel stress intensity factor finite element method numerical analysis |
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