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材料导报编辑部  2017, Vol. 31 Issue (22): 153-158    https://doi.org/10.11896/j.issn.1005-023X.2017.022.030
  计算模拟 |
多耦合拘束效应对P92钢蠕变裂纹扩展行为的影响*
方瑞杰,刘军,陈建恩,王肖锋
天津理工大学天津市先进机电系统设计与智能控制重点试验室,天津 300384
Dependence of Creep Crack Growth Behavior of P92 Steel on Multiple Coupling Constraints
FANG Ruijie, LIU Jun, CHEN Jianen, WANG Xiaofeng
Tianjin University of Technology, Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechanical System, Tianjin 300384
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摘要 基于断裂力学理论,针对不同面内拘束效应下P92钢高温蠕变裂纹扩展(Creep crack growth, CCG)进行了数据模拟与分析。研究发现不同的拘束效应对CCG行为有着各异的影响,主要分析了试样几何形状、尺寸以及初始裂纹深度等对CCG行为的影响,并且着重研究比较这3种耦合拘束效应对CCG行为的影响程度。基于多种耦合拘束对CCG行为的影响程度做了横向比较,研究发现:试样几何形状对CCG行为的影响程度要大于几何尺寸,试样尺寸和初始裂纹深度对CCG行为的影响程度相似,试样形状比初始裂纹深度的影响程度更大。
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方瑞杰
刘军
陈建恩
王肖锋
关键词:  拘束效应  P92钢  蠕变裂纹扩展  横向比较  有限元分析    
Abstract: Based on fracture mechanics, the creep crack growth (Creep crack growth, CCG) of P92 steel under the high temperatures was simulated and analyzed with different in-plane constraint effects. The study discovers that different constraint effects have an important influence for the behavior of CCG. The influence of specimen geometric shape, size and initial crack depth, especially their coupling constraintson on the behavior of CCG were analyzed. To compare the characteristics of the behavior of CCG under various coupling constraints, some results were found as follow. The effect of specimen geometry on the behavior of CCG is greater than the geometric size, and the effects of specimen size and the initial crack depth on the behavior of CCG are similar. The effects of specimen geometry on the behavior of CCG is greater than the initial crack depth.
Key words:  constraint effect    P92 steel    creep crack growth    horizontal comparison    finite element analysis
发布日期:  2018-05-08
ZTFLH:  TG142.73  
基金资助: *天津市自然科学基金(14JCYBJC19400);国家自然科学基金(11402170)
通讯作者:  刘军,男,1961年生,博士,教授,硕士研究生导师,主要研究方向为非线性转子动力学及控制E-mail:liujunjpna@163.com   
作者简介:  方瑞杰:男,1992年生,硕士研究生,主要研究方向为高温断裂力学E-mail:fangruijie_2012@163.com
引用本文:    
方瑞杰,刘军,陈建恩,王肖锋. 多耦合拘束效应对P92钢蠕变裂纹扩展行为的影响*[J]. 材料导报编辑部, 2017, 31(22): 153-158.
FANG Ruijie, LIU Jun, CHEN Jianen, WANG Xiaofeng. Dependence of Creep Crack Growth Behavior of P92 Steel on Multiple Coupling Constraints. Materials Reports, 2017, 31(22): 153-158.
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https://www.mater-rep.com/CN/10.11896/j.issn.1005-023X.2017.022.030  或          https://www.mater-rep.com/CN/Y2017/V31/I22/153
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