Sickle-shaped cracks in metallic round bars under cyclic eccentric axial loading

被引：35

作者：

Carpinteri, Andrea ^{[1
]}

Vantadori, Sabrina ^{[1
]}

机构：

[1] Univ Parma, Dept Civil & Environm Engn & Architecture, I-43100 Parma, Italy

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2009年 / 31卷 / 04期

关键词：

Round bar; Sickle-shaped surface crack; Stress-intensity factor (SIF); Eccentric axial loading; Fatigue; STRESS-INTENSITY FACTORS; SURFACE CRACKS; TENSION; FRACTURE; GROWTH;

D O I：

10.1016/j.ijfatigue.2008.03.006

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present paper, the fatigue propagation of an initial sickle-shaped surface crack in a metallic round bar under eccentric axial loading acting perpendicular to the crack plane is examined. Firstly, the stress-intensity factor (SIF) along the crack front is determined through a three-dimensional finite element analysis and the one-quarter point displacement method, for different values of the loading eccentricity. Then, the fatigue behaviour of the cracked bar is numerically analysed by a step-by-step procedure based on the Paris-Erdogan law. The results are plotted in terms of crack paths, intersection angle and crack depth evolution, by varying the loading eccentricity. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：759 / 765

页数：7

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