| 交变载荷下含两孔洞的铝合金长条的五种疲劳破坏型式 |
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| 引用本文： | 王芳文,陈宜亨.交变载荷下含两孔洞的铝合金长条的五种疲劳破坏型式[J].固体力学学报,2009,30(4). |
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| 作者姓名： | 王芳文 陈宜亨 |
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| 作者单位： | 西安交通大学航天学院强度与振动教育部重点实验室,西安,710049 |
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| 摘 要： | 通过试验发现交变载荷下含两孔洞的铝合金长条,由于两孔洞的方位不同,至少有五种疲劳裂纹引起的破坏型式.在五种不同的破坏情况下,疲劳裂纹初始寿命和疲劳裂纹扩展寿命均不同,必须分阶段评估,这也直接影响到整体疲劳寿命的预计;此时常规的、经典的疲劳裂纹扩展理论难以直接应用.
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| 关 键 词： | 铝合金 交变载荷 疲劳裂纹初始寿命 疲劳裂纹扩展寿命 破坏型式 |
FIVE FAILURE STYLES FOR AN ALUMINUM-ALLOY STRIP WITH TWO HOLES UNDER CYCLIC TENSILE LOADING |
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| Fangwen Wang,Yiheng Chen.FIVE FAILURE STYLES FOR AN ALUMINUM-ALLOY STRIP WITH TWO HOLES UNDER CYCLIC TENSILE LOADING[J].Acta Mechnica Solida Sinica,2009,30(4). |
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| Authors: | Fangwen Wang Yiheng Chen |
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| Institution: | MOE Key Laboratory for Strength and Vibration;School of Aerospace Xi'an Jiaotong University;Xi'an;710049 |
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| Abstract: | This note reports five failure styles found in our experimental investigation for the failure between two neighborly holes located at different angle in an Aluminum-Alloy strip under cycle tensile loadings.The fatigue crack initiation life and the fatigue crack propagation life are quite different in each failure style.It becomes necessary to evaluate the initiation life and the fatigue crack propagation life in the different stages.Without question,this affects the calculation of total fatigue crack life,a... |
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| Keywords: | Aluminum-Alloy cycle loading fatigue crack initiation life fatigue crack propagation life failure styles |
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