Cumulative fatigue damage in low cycle fatigue and gigacycle fatigue for low carbon-manganese steel

被引：35

作者：

Huang, Zhi Yong ^{[1
,2
]}

Wagner, Daniele ^{[1
]}

Bathias, Claude ^{[1
]}

Chaboche, Jean Louis ^{[3
]}

机构：

[1] Univ ParisOuest Nanterre Def, F-92410 Ville Davray, France

[2] Nanjing Univ Aeronaut & Astronaut, Nanjing 210016, Peoples R China

[3] Off Natl Etud & Rech Aerosp, F-92320 Chatillon, France

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2011年 / 33卷 / 02期

关键词：

Low cycle fatigue; Very high cycle fatigue; Cumulative fatigue; Fatigue damage; MECHANICS;

D O I：

10.1016/j.ijfatigue.2010.07.008

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Typical tee and pipe components are subjected to thermal and mechanical loading histories which are variable and divided into two different regimes: low cycle fatigue and high cycle fatigue in steam generator vessel of nuclear power plants. Carbon-manganese steel A42 are often used in such applications. In order to investigate the cumulative damage of low cycle fatigue and gigacycle fatigue, the gigacycle tests have been executed after LCF fatigue cycles damaged. The comparison of VHCF and cumulative fatigue test results shows that LCF load influences the VHCF strength. Continuum Damage Mechanics model is employed to estimate the fatigue damage of LCF and is extended to VHCF regime. The VHCF damage is obtained from varying test resonance frequency of specimen. Moreover, the effect of LCF load on VHCF is studied by an improved cumulative damage model. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：115 / 121

页数：7