Characterization of the creep interaction effect for twin semi-elliptical surface cracks under combined tension and bending loading

被引：5

作者：

Xu, Lianyong

Zhao, Lei ^{[1
]}

Jing, Hongyang

Han, Yongdian

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China

来源：

ENGINEERING FRACTURE MECHANICS | 2018年 / 192卷

基金：

中国国家自然科学基金;

关键词：

Multiple cracks interaction; Combined tension and bending; Creep regime; Crack growth; Combination rule; P92; STEEL; NUMERICAL-SIMULATION; GROWTH BEHAVIOR; FINITE-ELEMENT; C-ASTERISK; PLATES; FRACTURE; TEMPERATURE; DAMAGE; FLAWS;

D O I：

10.1016/j.engfracmech.2018.02.018

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The interaction of twin semi-elliptical surface cracks subjected to combined tension and bending in the creep regime is studied. Moreover, the crack growth behavior in the presence of multiple cracks is simulated to reveal the effect of creep interaction factor. The tension load produces a larger creep interaction factor than those for pure bending and combined tension and bending. For the combination of cracks, a greater value of the creep interaction factor is permitted compared with the linear-elastic condition. The enhancement of creep crack growth rate in multiple cracks is diminished as the improvement of creep interaction factor is lower than 30%.

引用

页码：148 / 162

页数：15

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