Low cycle fatigue performance investigation on Transverse Steel Dampers for bridges under ground motion sequences using shake-table tests

2019 ◽  
Vol 196 ◽  
pp. 109328 ◽  
Author(s):  
Lianxu Zhou ◽  
Xiaowei Wang ◽  
Aijun Ye
Keyword(s):  
Ground Motion ◽  
Low Cycle Fatigue ◽  
Fatigue Performance ◽  
Shake Table ◽  
Cycle Fatigue ◽  
Shake Table Tests ◽  
Transverse Steel

Low-Cycle Fatigue Performance of Buckling Restrained Braces and Assessment of Cumulative Damage under Severe Earthquakes

2018 ◽  
Vol 763 ◽  
pp. 867-874
Author(s):  
Yu Shu Liu ◽  
Ke Peng Chen ◽  
Guo Qiang Li ◽  
Fei Fei Sun
Keyword(s):  
Fatigue Life ◽  
Energy Dissipation ◽  
Structural Reliability ◽  
Low Cycle Fatigue ◽  
Engineering Application ◽  
Fatigue Performance ◽  
Cycle Fatigue ◽  
Variable Amplitude ◽  
Buckling Restrained Braces ◽  
Energy Dissipation Devices

Buckling Restrained Braces (BRBs) are effective energy dissipation devices. The key advantages of BRB are its comparable tensile and compressive behavior and stable energy dissipation capacity. In this paper, low-cycle fatigue performance of domestic BRBs is obtained based on collected experimental data under constant and variable amplitude loadings. The results show that the relationship between fatigue life and strain amplitude satisfies the Mason-Coffin equation. By adopting theory of structural reliability, this paper presents several allowable fatigue life curves with different confidential levels. Besides, Palmgren-Miner method was used for calculating BRB cumulative damages. An allowable damage factor with 95% confidential level is put forward for assessing damage under variable amplitude fatigue. In addition, this paper presents an empirical criterion with rain flow algorithm, which may be used to predict the fracture of BRBs under severe earthquakes and provide theory and method for their engineering application. Finally, the conclusions of the paper were vilified through precise yet conservative prediction of the fatigue failure of BRB.

Effect of torsional pre-strain on low cycle fatigue performance of 304 stainless steel

2019 ◽  
Vol 746 ◽  
pp. 50-57 ◽  
Author(s):  
Shengyuan Ji ◽  
Caiming Liu ◽  
Yajing Li ◽  
Shouwen Shi ◽  
Xu Chen
Keyword(s):  
Stainless Steel ◽  
Low Cycle Fatigue ◽  
Fatigue Performance ◽  
304 Stainless Steel ◽  
Cycle Fatigue
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