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[1]魏化中,何亚莹,游 锋,等.文章编号：1674-2869（2014）02-0000-00大型储罐大角焊缝裂纹的可靠性分析[J].武汉工程大学学报,2014,(02):62.[doi:10.3969/j.issn.1674-2869.2014.02.000]
　WEI Hua-zhong,HE Ya-ying,YOU Feng,et al.Reliability analysis of large fillet-weld crack of large-scale storage tank[J].Journal of Wuhan Institute of Technology,2014,(02):62.[doi:10.3969/j.issn.1674-2869.2014.02.000]
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文章编号：1674-2869（2014）02-0000-00大型储罐大角焊缝裂纹的可靠性分析()
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2014年02期
页码:
62
栏目:
机电与信息工程
出版日期:
2014-02-28

文章信息/Info

Title:
Reliability analysis of large fillet-weld crack of large-scale storage tank
作者:
魏化中; 何亚莹; 游 锋; 张占武
(武汉工程大学机电工程学院,湖北 武汉 430074)
Author(s):
WEI Hua-zhong;  HE Ya-ying;  YOU Feng;  ZHANG Zhan-wu
(School of Mechanical Engineering, Wuhan Institute of Technology, Wuhan 430074, China)
关键词:
-
Keywords:
large-scale storage tank;  reliability analysis;  finite element analysis;  Monte-Carlo method;  stress intensity factor
分类号:
TE821
DOI:
10.3969/j.issn.1674-2869.2014.02.000
文献标志码:
A do
摘要:
-
Abstract:
Taking the large storage tank of 100,000 cubic meters with floating roof as a case, the first order second moment (FOSM) method on the model of stress-strength interference and the reliability analysis method of the crack plate on ANSYS were respectively used to analyze the reliability of the large fillet-weld crack of the large-scale storage tank. First, using the fracture criterion of the stress intensity factor based on the model of stress-strength interference, the reliability degree of dynamic growth of the large fillet-weld crack of the large-scale tank was calculated through the FOSM method. In this way, the values of the stress intensity factor and the reliability degree are 354.4 MPa mm1/2 and 93.32%. Then, ANSYS software was used to calculate the reliability degree of the crack plate. The value of the stress intensity factor of the crack tip is 376.46 MPa mm1/2 using 1/4-point displacement method. The Monte-Carlo method is used to calculate the reliability of crack growth, and the value of the reliability degree is 82.36%.Bying comparing the results from the two methods, the value of the reliability by ANSYS analysis is lower than that by the stress-strength interference theory. As far as safety is concerned, the result of lower reliability degree should be selected as decision support.

参考文献/References:

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[8].YANG Yi-qing, DONG Jin-shan, XU Xin-jun, et al. The method research of reliable analysis for the plate specimen containing the crack based on ANSYS[J]. Modern Manufacturing Engineering, 2010(12),54-57. （in Chinese）

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备注/Memo

备注/Memo:
基金项目：“十二五”国家科技支撑计划课题《特种设备结构健康监测与损伤诊断技术》的子专题《大型储罐基于风险的评估技术研究》(NO.2011BAK06B01-13) (收稿日期：2013-5-10
作者简介：魏化中（1955-），男，湖南永州人，教授.研究方向：压力容器压力管道、流体机械和搅拌设备的开发、新型高效过程装备及仿真技术.
更新日期/Last Update: 2014-02-25