THE EFFECTIVE STRESS RANGE AS A MEAN STRESS PARAMETER

被引：50

作者：

DUQUESNAY, DL

TOPPER, TH

YU, MT

POMPETZKI, MA

机构：

[1] Department of Civil Engineering, University of Waterloo, Waterloo

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 1992年 / 14卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

CRACK CLOSURE; DAMAGE; EFFECTIVE STRESS RANGE; SHORT CRACKS; MEAN STRESS;

D O I：

10.1016/0142-1123(92)90153-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This investigation examines the hypothesis that variations in the crack opening stress level of short cracks can account for the observed variations in fatigue strength with mean stress under constant-amplitude cyclic loading. Support for the hypothesis is provided by the experimental data generated for a 2024-T351 aluminium alloy and a SAE 1045 steel. Based on the observed variations in crack opening stress with mean stress an effective stress range is postulated as a mean stress parameter. The effective stress range successfully reduces the fatigue data for all levels of mean stress to a unique fatigue-life curve for each material.

引用

页码：45 / 50

页数：6

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