...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Engineering Fracture Mechanics >Assessment of plastic collapse behavior for tubes with collinear cracks
【24h】

Assessment of plastic collapse behavior for tubes with collinear cracks

机译：共线裂纹管的塑性塌陷行为评估

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The 40 percent of wall thickness criterion has been used as a plugging rule of steam generator tubes but it can be applicable just to a single-cracked tubes. In the previous studies preformed by the authors, a total of 10 local failure prediction models were introduced to estimate the coalescence load of two adjacent collinear through-wall cracks existing in thin plates, and' the reaction force model and plastic zone contact model were selected as optimum models among them. The objective of this study is to verify the applicability of the proposed optimum local failure prediction models to the tubes with two collinear through-wall cracks. For this, a series of plastic collapse tests and finite element analyses were carried out using the tubes containing two collinear through-wall cracks. It has been shown that the proposed optimum failure models can predict the local failure behavior of two collinear through-wall cracks existing in tubes well. And a coalescence evaluation diagram was developed which can be used to determine whether the adjacent cracks detected by NDE coalesce or not.
机译：壁厚标准的40％已被用作蒸汽发生器管的堵塞规则，但它仅适用于单裂纹管。在作者进行的先前研究中，总共引入了10个局部破坏预测模型，以估计薄板中存在的两个相邻共线贯穿壁裂缝的合并载荷，并选择了反作用力模型和塑性区接触模型。作为其中的最佳模型。这项研究的目的是验证所提出的最佳局部失效预测模型对具有两个共线贯穿壁裂缝的管的适用性。为此，使用包含两个共线贯穿壁裂缝的管子进行了一系列塑性塌陷测试和有限元分析。结果表明，所提出的最优失效模型可以预测管中存在的两个共线贯穿壁裂纹的局部失效行为。并建立了聚结评价图，可用于确定NDE检测到的相邻裂纹是否聚结。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号