| 苏文献1，朱国梁1，周飞鸽2.基于欧美压力容器规范的开孑L接管结构疲劳寿命研究[J].轻工机械,2016,34(2): |
| 基于欧美压力容器规范的开孑L接管结构疲劳寿命研究 |
| Study on Fatigue Life of Piping Connections Based on International Codes of Pressure Vessel |
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| DOI：10. 3969/j. issn. 1005 -2895. 2016. 02. 010 |
| 中文关键词: 压力容器 接管结构 疲劳寿命 ASMEⅧ一2标准 EN 13445标准 |
| 英文关键词:pressure vessel pipe structure fatigue life ASME Ⅷ-2 EN 13445 |
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| 中文摘要: |
| 针对金属结构失效中，超过80%都是由疲劳引起的现象，以压力容器中的开孔接管结构为例，用ANSYS软件对
其进行弹性和弹一塑性分析。根据有限元分析结果，分别采用ASMEⅧ一2规范和EN 13445规范中的方法进行疲劳评定。
比较各种疲劳设计方法得到的许用循环次数与试验寿命，讨论异同和适用性。结果表明：规范中的疲劳评定方法预测的
寿命都小于试样的实际寿命。ASMEⅧ一2弹一塑性分析法和EN 13445详细评定法得出的疲劳寿命最接近实际值。 |
| 英文摘要: |
| Over 80% of metal structural failure is caused by fatigue. In opening nozzle case. the parametric model of
pipe connection structure was established by ANSYS. According to the results of elastic and elastic-plastic stress
analysis, fatigue assessments were carried out respectively with the methods of ASME Ⅷ-2 code and EN 13445 code.
Detailed comparison of fatigue life was made between numerical simulation and fatigue experiment. The results show that
all the permissible numbers of cycles obtained from different assessment methods are less than the actual life of
specimen. The elastic stress analysis method from ASME Ⅷ-2 code and the detailed assessment of fatigue life from EN
13445 code are closer to the test value than others. |
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