Effect of pre-fatigue damage on static and hysteretic behavior of Q355 steel

被引：13
|
作者：
Si, Qi [1 ]
Ding, Yang [2 ]
Zong, Liang [2 ]
Meng, Xin [3 ]
机构：
[1] Tianjin Univ, Sch Civil Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Sch Civil Engn, Key Lab Coast Civil Struct Safety, Minist Educ, Tianjin 300072, Peoples R China
[3] Imperial Coll London, Dept Civil & Environm Engn, London, England
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2022年 / 160卷
关键词：
Pre-fatigue damage; Coupon test; Structural steel; Mechanical properties; Constitutive model; MODEL;
D O I：
10.1016/j.ijfatigue.2022.106874
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The mechanical behavior and low cycle fatigue properties of Q355B structural steel subjected to different levels of pre-fatigue damage were investigated in the present study. Monotonic tensile and low cycle hysteresis loading tests were carried on Q355B steel coupons with pre-fatigue damage to investigate its influence on the mechanical properties of Q355B steel. A reliable relationship between the mechanical behavior and the pre-fatigue damage under cyclic loading was subsequently established. The findings from the present research provide a valuable reference for the accurate assessment of the mechanical performance of steel structures after varying degrees of pre-fatigue damage.
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页数：13
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