Cracks at rounded V-notch tips: an analytical expression for the stress intensity factor

被引：15
|
作者：
Sapora, A. [1 ]
Cornetti, P. [1 ]
Carpinteri, A. [1 ]
机构：
[1] Politecn Torino, Dept Struct Geotech & Bldg Engn, I-10129 Turin, Italy
来源：
INTERNATIONAL JOURNAL OF FRACTURE | 2014年 / 187卷 / 02期
关键词：
Brittle fracture; Blunted notches; Mode I; SIF; FRACTURE-MECHANICS APPROACH; SHAPED NOTCHES; TOUGHNESS; STRENGTH; CRITERION; RADIUS; ENERGY; ONSET; ROOT;
D O I：
10.1007/s10704-014-9932-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An analytical expression for the stress intensity factor related to a crack stemming from a blunted V-notch tip is put forward. The analysis is limited to mode I loading conditions, as long as the crack length is sufficiently small with respect to the notch depth. The proposed formula improves significantly the predictions of a recently introduced relationship, by considering a notch amplitude dependent parameter. Its values are estimated through a finite element analysis: different notch amplitudes, ranging from to , and different crack length to root radius ratios, ranging from 0 to 10, are taken into account. The evaluation of the apparent generalized fracture toughness according to equivalent linear elastic fracture mechanics concludes the paper.
引用
收藏
页码：285 / 291
页数：7
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