| 带缺陷管道塑性极限分析的一种迭代算法 |
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| 引用本文： | 徐志锋,刘应华.带缺陷管道塑性极限分析的一种迭代算法[J].油气储运,2000,19(5):18-23. |
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| 作者姓名： | 徐志锋 刘应华 |
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| 作者单位： | 清华大学工程力学系
(徐志锋，刘应华)，清华大学工程力学系(徐秉业) |
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| 摘 要： | 带体积型缺陷压力管道的塑性极限分析及相应的安全方法研究，是当前压力管道安全性分析中的前沿课题，具有十分重要而广泛的应用前景。塑性极限分析在对带缺陷压力管道的完整性评价方面起下分竽 要的作用，它在结构完整性评价的双判据中是一个非常重要的参数。做为塑性力学的一个重要分支，其分析结果可用来进上步挖掘材料的潜力，并为压力管道的设计与安全评估提供有价值的指导。提出了一种使用三维理想刚塑性体极限上限分析的迭代
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| 关 键 词： | 压力管道 缺陷 极限分析 塑性 油气储运 |
An Effective Iterative Algorithm of the Upper Bound Limit Analysis with Slots Pipelines under Multi-loading Systems |
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| Xu Zhifeng,Liu Yinghua et al.An Effective Iterative Algorithm of the Upper Bound Limit Analysis with Slots Pipelines under Multi-loading Systems[J].Oil & Gas Storage and Transportation,2000,19(5):18-23. |
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| Authors: | Xu Zhifeng Liu Yinghua |
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| Abstract: | In this paper,an effective iterative algorithm is used for the limit analysis of 3-D rigid-perfectly plastic bodies. A numerical path scheme for radial loading is adopted to deal with complex multi-loading system. The iterative algorithm has been applied to carry out the effects of slots on the upper bound limit loads of defective pipelines under multi-loading system,such as bending moment,internal pressure and axial tension. The research achievements are very useful to integrity assessment of defective pipelines. |
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| Keywords: | limit analysis multi-loading systems mathematical programming finite element method |
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