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国内外“延性断裂评定”的各种实施方法及其可靠性研究 被引量:2

STUDY ON VARIOUS EXECUTIVE METHODS FOR DUCTILE FRACTURE ASSESSMENT AND THEIR RELIABILITY
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摘要 文章对压力容器及管道的延性断裂评定,评述了各国的不同实施方法,其中有EPRI的J^T稳定性评定图方法(美国)、PD6493/91失效评定图切线方法(英国)、相容应力的极值方法(中国)以及J^T曲线汇交方法(PressureVesselandPipingCodes)等。本文对个别评定方法的失当和不足进行了论证分析和对比计算,推荐了最佳的评定方法。推荐的方法便于微机操作,概念清晰,直观性强,可获得高可靠度的失稳预测。 The authors summarized various execuhve methods for ductile fracture assessment such as EPRI assessment dingam method for stability analysis, PD6493/91 tanged method of failure assessment diagram , the maximum value method of adrissible str6sses and the intersechon point method of (J^T) curves in PVP codes.By inveshgahon, the authors propose that the maximum value method of adrissible stressesis the optimi zation method and may be recommended in practice for it can assess the ductile fracture of smictures more precisely. On the contrny, the intersechon POint method of (J^T)curves will produce lnger deviation due to itss improper executive riotion For the intersechon method ,specialist must pay close attention to its use.
出处 《工程力学》 EI CSCD 北大核心 2000年第3期10-15,共6页 Engineering Mechanics
关键词 压力容器 管道 延性断裂评定 优化方法 可靠性 Pressure vessel and pipes, ductile fracture assessment, optimization method reliability
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参考文献3

  • 1费英琼 董亚民.在基于根号Je/J失效曲线的延性断裂评定中,PD6493和EPRI两种模式的一致性研究[J].工程力学,1994,6.
  • 2费英琼,工程力学,1994年,6卷,增刊
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同被引文献10

  • 1张晔 江.钢框架梁柱节点弹性断裂的数值模拟和参数研究.同济大学硕士学位论文[M].-,2000.3.
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  • 3董亚民.双参数缺陷评定方法的研究[R]..国家核安全局八五重点科技攻关项目专题报告(N0.85-213—04-08(2)[C].,1995.8..
  • 4.专题报告“穿透裂纹稳定性及张开位移的程序研究与开发”[R].北京:清华大学工程力学系,2000..
  • 5Y M Dong, W Yang and K C Hwang. Elastic-plastic defect assessment based on ductile fracture process[J]. Nuclear Engineering and Design, 1993, 142: 27-41.
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  • 7Gudiance on methods for assessing the accoptability of flaws in fusion welded structures[S]. PD6493: 1991.
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  • 9Pressure Vessel and Piping Codes[J]. J of Pressure Vessel Technology, 1986, 108: 352-366. Transaction of the ASME.
  • 10李国强,孙飞飞,沈祖炎.强震下钢框架梁柱焊接连接的断裂行为[J].建筑结构学报,1998,19(4):19-28. 被引量:48

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