| 基于欧美压力容器规范的平封头角焊缝疲劳寿命研究 |
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| 引用本文： | 苏文献,周飞鸽,范斌.基于欧美压力容器规范的平封头角焊缝疲劳寿命研究[J].上海理工大学学报,2015,37(4):350-354. |
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| 作者姓名： | 苏文献 周飞鸽 范斌 |
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| 作者单位： | 上海理工大学 能源与动力工程学院, 上海 200093;上海理工大学 能源与动力工程学院, 上海 200093;上海妍杰机械工程有限公司, 上海 201314 |
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| 摘 要： | 以大型有限元分析软件ANSYS为工具,对平封头结构进行弹性和弹-塑性分析。根据有限元分析结果,分别采用ASME VIII-2规范和EN 13445规范中的方法对平封头结构进行疲劳评定,得到了不同方法下平封头结构的许用循环次数。结合Hinnant等的压力容器平封头疲劳试验数据,对各种疲劳设计方法进行分析比较。结果表明,规范中的疲劳评定方法预测的寿命均小于试样的实际寿命,基于ASME VIII-2弹性分析法得出的疲劳寿命最接近实际值。
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| 关 键 词： | 平封头 疲劳评定 ASME VIII-2规范 EN 13445规范 |
| 收稿时间： | 2014/4/22 0:00:00 |
Fatigue Life Assessment of Welded Flat Head Based on International Codes of Pressure Vessel |
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| SU Wenxian,ZHOU Feige and FAN Bin.Fatigue Life Assessment of Welded Flat Head Based on International Codes of Pressure Vessel[J].Journal of University of Shanghai For Science and Technology,2015,37(4):350-354. |
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| Authors: | SU Wenxian ZHOU Feige and FAN Bin |
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| Institution: | School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Shanghai Yanjie Machinery Engineering Co. Ltd., Shanghai 201314, China |
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| Abstract: | A parametric model of flat head was established by using the conventional finite element software ANSYS.According to the results of elastic and elastic-plastic stress analysis, fatigue assessments were carried out respectively with the methods specified in ASME VIII-2 code and EN 13445 code to obtain the permissible numbers of cycles.On the basis of fatigue test data by Hinnant, the predicted fatigue life of the flat head was compared with the practical fatigue life.The results show that all the permissible numbers of cycles obtained from different assessment methods are less than the actual life of specimen, and the elastic stress analysis result based on ASME VIII-2 code is closest to the test value. |
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| Keywords: | flat head fatigue assessment ASME VIII-2 code EN 13445 code |
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