NOTCHED MEMBER FATIGUE LIFE PREDICTIONS COMBINING CRACK INITIATION AND PROPAGATION

被引：110

作者：

DOWLING, NE

机构：

[1] Westinghouse R & D Center, Pittsburgh, Pennsylvania

来源：

FATIGUE OF ENGINEERING MATERIALS AND STRUCTURES | 1979年 / 2卷 / 02期

关键词：

D O I：

10.1111/j.1460-2695.1979.tb01349.x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Abstract Fatigue lives of notched members are considered to be divided into crack initiation and propagation phases. Apparent size effects caused by crack propagation through the strain gradient of the notch are accounted for if initiation is defined as a crack size within the local notch field. The extent of this field may be estimated from fracture mechanics analysis, with its size being of the order of one tenth of the notch radius. Plasticity effects must be properly handled in predicting crack initiation, but linear elastic analysis is generally satisfactory for handling the propagation phase. Copyright © 1979, Wiley Blackwell. All rights reserved

引用

页码：129 / 138

页数：10

共 16 条

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