| 常压储罐系统可靠性研究 |
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| 引用本文： | 刘扬,赵洪激,董家梅.常压储罐系统可靠性研究[J].石油学报,2002,23(5):96-100. |
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| 作者姓名： | 刘扬 赵洪激 董家梅 |
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| 作者单位： | 大庆石油学院, 黑龙江安达, 151400 |
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| 基金项目： | 黑龙江省自然科学基金资助项目 (E0 2 0 1) |
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| 摘 要： | 提出了储罐系统可靠性设计参数(载荷、结构尺寸、材料性能)的计算方法.并采用8节点等参元有限元法计算了储罐结构应力,考虑了影响结构失效的两个不确定性因素:随机性和模糊性.根据断裂力学理论和模糊可靠性理论,建立了无泄漏储罐失效模糊极限状态方程.提出了计算结构系统模糊断裂可靠度的权函数综合法,该方法具有高的效率.给出了结构模糊断裂可靠度的综合表达式以及缺陷点处储罐系统的可靠度计算方法.
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| 关 键 词： | 储罐 有限元法 模糊数学 可靠性分析 计算方法 |
| 文章编号： | 0253-2697(2002)05-0096-05 |
| 收稿时间： | 2002-1-4 |
| 修稿时间： | 2002-4-5
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RELIABILITY ANALYSIS OF TANK AT NORMAL PRESSURE |
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| LIU Yang,et al..RELIABILITY ANALYSIS OF TANK AT NORMAL PRESSURE[J].Acta Petrolei Sinica,2002,23(5):96-100. |
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| Authors: | LIU Yang |
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| Affiliation: | Daqing Petroleum Institute, Anda 151400, China |
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| Abstract: | A calculation method for reliability of design parameters of tank,such as load,dimension,material property,was proposed.The structural stresses of tank were calculated with the eight_dot limited element.Two undetermined factors for influencing structural failure,e.g.randomness and fuzzyness,were taken into account.A fuzzy critical state equation for describing failure of leak_free tank was established according to the theories of fracture mechanics and fuzzy reliability.A fuzzy weight function algorithm for calculating structural reliability of a tank was presented.A method for calculating the reliability of cracking on tank was also given. |
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| Keywords: | tank limited element fuzzy mathematics analysis calculation method |
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