Prediction of fatigue lifetime under multiaxial cyclic loading using finite element analysis

被引：75

作者：

Sun, Guo-Qin ^{[1
]}

Shang, De-Guang ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

来源：

MATERIALS & DESIGN | 2010年 / 31卷 / 01期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Elastic-plastic; FEA; Multiaxial fatigue; Life prediction; Notch; CRITICAL PLANE APPROACH; SIMULATION; PHASE;

D O I：

10.1016/j.matdes.2009.06.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Life prediction for GH4169 superalloy thin tubular and notched specimens were investigated under proportional and nonproportional loading with elastic-plastic finite element analysis (FEA). A strain-controlled tension-torsion loading was carried out by applying the axial and circular displacements on one end of the specimen in the cylindrical coordinate system. Uniaxial cyclic stress-strain data at high temperature were used to describe the multi-linear kinematic hardening of the material. The comparison between FEA and experimental results for thin tubular specimen showed that the built model of FE is reliable. A fatigue damage parameter was proposed to predict the fatigue crack initiation life for notched specimen. The results showed that a good agreement was achieved with experimental data. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：126 / 133

页数：8

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