| 聚乙烯压力管道裂纹快速扩展性及止裂性研究进展 |
| |
| 引用本文： | 刘厚俊,张玉凤,霍立兴.聚乙烯压力管道裂纹快速扩展性及止裂性研究进展[J].焊接学报,2002,23(4):87-90. |
| |
| 作者姓名： | 刘厚俊 张玉凤 霍立兴 |
| |
| 作者单位： | 天津大学,材料科学与工程学院,天津,300072 |
| |
| 基金项目： | 国家自然科学基金资助项目 (50 0 750 61 ) |
| |
| 摘 要： | 许多工程问题是由于流 (气 )体压力导致了结构开裂 ,裂纹会迅速扩展或者止裂 ,这被认为是断裂动力学最前沿的研究领域。在这篇文章中介绍了聚乙烯 (PE)管材抗快速裂纹扩展评价方法的研究进展 ,简述了正在完善的标准方法的试验原理和试验装置 ,对我国在此领域的研究工作提出了建议。陈述了一些与快速扩展及其止裂相关的动态断裂问题 ,并将有限元编码方面的一些发展用来模拟断裂管道行为 ,另外对采用节点力释放法和能量平衡法计算裂纹驱动力的数学方法也做了描述
|
| 关 键 词： | 快速裂纹扩展 塑料管道 临界压强 止裂 |
| 文章编号： | 0253-360X(2002)04-87-04 |
| 收稿时间： | 2001/11/12 0:00:00 |
Development of Research on Rapid Propagation and Arrest of Cracks in Polyethylene Pressurized Pipelines |
| |
| LIU Hou-jun,ZHANG Yu feng and HUO Li-xing.Development of Research on Rapid Propagation and Arrest of Cracks in Polyethylene Pressurized Pipelines[J].Transactions of The China Welding Institution,2002,23(4):87-90. |
| |
| Authors: | LIU Hou-jun ZHANG Yu feng and HUO Li-xing |
| |
| Affiliation: | College of Material Science and Engineering, Tianjin University, Tianjin 300072, China,College of Material Science and Engineering, Tianjin University, Tianjin 300072, China and College of Material Science and Engineering, Tianjin University, Tianjin 300072, China |
| |
| Abstract: | There are many instances where fluid pressure acting on the structure caused the structure to cracking and the cracks could be propagated rapidly or arrestded,which is regarded as the most advanced research field in dynamic fracture.The information and development which are related to polyehtylene pipes estimation methods of resistanc to crack propagation are described,including the principle and apparatus of test.Several dynamic analysis issues relating to rapid propagation and arrest in gas pipelines are presented in this paper.Some developments have been implemented into this finite element code to simulate the behavior of the fractured pipes.For the calculation of crack driving force,the numerical approaches using the nodal force release and energy balance methods are described. |
| |
| Keywords: | rapid crack propagation plastic pipe critical pressure arrest |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载全文 |
|
