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Ⅱ型凹痕管道的有限元计算及其强度分析 被引量:1

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摘要 管道上的凹痕缺陷是影响管道强度的重要因素之一。国际上通用的管道设计标准普遍采用凹痕深度对管道凹痕是否需要修复进行评估,但是,许多满足标准要求的凹痕仍会失效。因此还需要深入分析更多参数与凹痕管道强度的关系。针对管道上的Ⅱ型典型凹痕缺陷,建立不同情况下的有限元模型;对大量计算结果进行整理、归纳并绘图,在此基础上,对结果进行单因素和多因素分析;采用非线性回归分析方法对计算结果进行分析,经过大量的计算和类比,得到具有一定适用范围下凹痕管道最大应力与凹痕深度、管径、壁厚以及凹痕纵向长度之间的关系表达式。
机构地区 西南石油大学
出处 《石油机械》 北大核心 2011年第12期41-44,共4页 China Petroleum Machinery
基金 国家自然科学基金项目"复杂油气长输管道工程系统货币化定量风险评价与最优维护决策理论及方法研究"(50974105) "十一五"国家科技支撑计划重点项目"城市燃气管线安全可靠性评价技术研究"(2006BAJ16B03)
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参考文献7

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二级参考文献7

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