A Method for Predicting the Effects of Specimen Geometry and Loading Condition on Fatigue Strength | |
Sun CQ(孙成奇); Song QY | |
发表期刊 | METALS |
2018-10-01 | |
卷号 | 8期号:10页码:Ar-811 |
ISSN | 2075-4701 |
摘要 | Specimen geometry and loading condition usually have a great influence on the fatigue strength of metallic materials, which is an important issue in evaluating the reliability of component parts. In this paper, a rotating bending fatigue test is performed at first on an hourglass specimen and a notch specimen of a high strength titanium alloy. Experimental results indicate that, in terms of local stress, the notch specimen endures higher fatigue strength in comparison with the hourglass specimen due to its relatively smaller control volume. Then, a probabilistic control volume method is proposed for correlating the effects of specimen geometry and loading condition on the fatigue strength based on Weibull distribution and the concept of control volume. A simple formula is obtained for the fatigue strength in relation to control volumes, in which the parameter is the shape parameter of Weibull distribution of fatigue strength. The predicted results are in good agreement with the present experimental data for high strength titanium alloy and the data for the high strength steel and the full scale EA4T axle in the literature. |
关键词 | notch effect size effect loading condition fatigue strength control volume titanium alloy |
DOI | 10.3390/met8100811 |
URL | 查看原文 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000448658700075 |
关键词[WOS] | RAILWAY AXLES ; WEAKEST-LINK ; DAMAGE CALCULATIONS ; GIGACYCLE FATIGUE ; HIGH-CYCLE ; SIZE ; STEEL ; NOTCH ; LIMIT ; COMPONENTS |
WOS研究方向 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
WOS类目 | Materials Science ; Metallurgy & Metallurgical Engineering |
项目资助者 | National Key Research and Development Program of China "Genera Design, Construction and Sea Trial of Full Ocean Deep Manned Submersible" [2016YFC0300600] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040503, XDB22020201, XDB22020200] |
论文分区 | 二类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/78167 |
专题 | 非线性力学国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Sun CQ,Song QY. A Method for Predicting the Effects of Specimen Geometry and Loading Condition on Fatigue Strength[J]. METALS,2018,8,10,:Ar-811. |
APA | 孙成奇,&Song QY.(2018).A Method for Predicting the Effects of Specimen Geometry and Loading Condition on Fatigue Strength.METALS,8(10),Ar-811. |
MLA | 孙成奇,et al."A Method for Predicting the Effects of Specimen Geometry and Loading Condition on Fatigue Strength".METALS 8.10(2018):Ar-811. |
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irJ2018096.pdf(4440KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
IrJ2018390.pdf(4440KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
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