Low cycle fatigue behavior of high-strength structural steel under biased strain control

被引：3
|
作者：
Luo, Yunrong [1 ,2 ]
Guo, Yi [2 ]
Wang, Qingyuan [1 ]
Liu, Yongjie [1 ]
机构：
[1] Sichuan Univ, Dept Civil Eng & Mech, Chengdu 610064, Peoples R China
[2] Sichuan Univ Sci & Engn, Coll Mech Engn, Zigong, Peoples R China
来源：
FRONTIERS OF GREEN BUILDING, MATERIALS AND CIVIL ENGINEERING, PTS 1-8 | 2011年 / 71-78卷
关键词：
low cycle fatigue (LCF); high-strength steel; biased strain control; fatigue life; MEAN STRESS; LIFE;
D O I：
10.4028/www.scientific.net/AMM.71-78.4020
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The low cycle fatigue (LCF) behavior of high-strength structural steel under biased strain control has been investigated. Seven strain ratios with constant maximum strain amplitude were adopted. Significant cyclic softening and mean stress relaxation were observed in all cases. The fatigue life under biased strain control could be well predicted by Coffin-Manson relationship. Fractography by scanning electron microscopy was used to determine the LCF failure mechanisms and fatigue crack propagation modes.
引用
收藏
页码：4020 / +
页数：2
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