A new comprehensive model of damage for flexural subassemblies prone to fatigue

被引：79

作者：

Bai, Yongtao ^{[1
]}

Nardi, Deborah C. ^{[2
]}

Zhou, Xuhong ^{[1
]}

Picon, Ricardo A. ^{[3
]}

Florez-Lopez, Julio ^{[1
]}

机构：

[1] Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China

[2] Fed Univ Latin Amer Integrat, Av Tancredo Neves 6731, BR-85867900 Foz Do Iguacu, Parana, Brazil

[3] Univ Catolica Temuco, Fac Ingn, Dept Obras Civiles & Geol, Av Rudecindo Ortega 02950, Temuco 4780000, Chile

来源：

COMPUTERS & STRUCTURES | 2021年 / 256卷

关键词：

Engineering sciences; Steel structures; Fatigue failure; Crack propagation; Damage mechanics; LOW-CYCLE FATIGUE; CRACK-PROPAGATION; STEEL STRUCTURES; BEAM ELEMENT; BEHAVIOR; FRACTURE; FRAMES;

D O I：

10.1016/j.compstruc.2021.106639

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Fatigue resistance is a key performance for the life-cycle sustainability of materials and structures. Structural members subjected to flexural forces such as spring hinges in origami structures are one of the most commonly existing in nature and engineering practice but predicting their fatigue resistance is a challenge because of complex mechanisms of crack localization, nonstationary amplitudes in the time domain, and the influence of stress gradient due to bending moment. We developed a general lumped damage simulation model for predicting the fatigue life and the associated crack propagation in the full range of elastic and plastic amplitudes. It is found that the developed comprehensive damage model demonstrates a new perspective for fatigue-induced remaining life quantification for engineering structures. (c) 2021 Elsevier Ltd. All rights reserved.

引用

页数：13

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