扩孔对冷膨胀疲劳寿命影响的数值研究

IF 0.8 4区工程技术 Q4 ENGINEERING, MECHANICAL

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-01-11 DOI:10.1139/tcsme-2021-0123

Kuanyu Liu, Xinsheng Yang, Li Zhou, Ming Li, Weijin Zhu

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引用次数: 1

摘要

采用基于Abaqus/CAE的有限元方法，对6061铝合金板经开口套冷扩后的扩孔过程进行了模拟，分析了扩孔深度与残余应力场分布的关系。利用疲劳分析软件FE-SAFE计算了不同扩孔深度下的疲劳寿命，并通过疲劳试验进行了验证。结果表明，扩孔后的扩孔会增加孔边缘入口表面的残余压应力。此外，试样的疲劳寿命随着扩孔深度的增加而增加，扩孔深度为0.5mm时试样的疲劳增益最佳。

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Numerical investigation of the effect of hole reaming on fatigue life by cold expansion

The reaming process of the 6061 aluminum alloy plate after cold expansion with split sleeve was simulated by finite element (FE) method based on Abaqus/CAE, the relationship between the reaming depths and the distribution of residual stress fields is obtained by analysis. The fatigue lives of the plate under different reaming depths were calculated by using the fatigue analysis software FE-SAFE, and verified by fatigue tests. The results show that reaming after expansion will increase the residual compressive stress at the hole edge on the entrance surface. In addition, the fatigue life of the specimens increases with the increase of the reaming depth, and the best fatigue gain of the specimen is obtained when the reaming depth of 0.5 mm.

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来源期刊

Transactions of The Canadian Society for Mechanical Engineering 工程技术-工程：机械

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

5 months

期刊介绍： Published since 1972, Transactions of the Canadian Society for Mechanical Engineering is a quarterly journal that publishes comprehensive research articles and notes in the broad field of mechanical engineering. New advances in energy systems, biomechanics, engineering analysis and design, environmental engineering, materials technology, advanced manufacturing, mechatronics, MEMS, nanotechnology, thermo-fluids engineering, and transportation systems are featured.