| 元件疲劳可靠性估算的剩余强度模型 |
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| 引用本文： | 吕海波,姚卫星.元件疲劳可靠性估算的剩余强度模型[J].航空学报,2000,21(1):74-77. |
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| 作者姓名： | 吕海波 姚卫星 |
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| 作者单位： | 南京航空航天大学,飞行器系,江苏,南京,210016 |
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| 摘 要： | 提出了一个估算元件疲劳可靠性的剩余强度模型,讨论了剩余强度模型的一般形式,给出了元件在常幅和变幅载荷作用下的剩余强度的退化模型。在此基础上系统阐述了元件在常幅和多级载荷下的疲劳可靠性分析方法。算例的分析结果与试验结果符合很好,表明所提出的剩余强度模型是合理可行的。
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| 关 键 词： | 剩余强度 疲劳可靠性 安全余量方程 应力-强度干涉模型 |
| 文章编号： | 1000-6893(2000)01-0074-04 |
| 收稿时间： | 1998-12-07; |
| 修稿时间： | 1998-12-07 |
RESIDUAL STRENGTH MODEL OF ELEMENTS' FATIGUE RELIABILITY EVALUATION |
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| Lü Hai-bo,YAO Wei-xing.RESIDUAL STRENGTH MODEL OF ELEMENTS'''' FATIGUE RELIABILITY EVALUATION[J].Acta Aeronautica et Astronautica Sinica,2000,21(1):74-77. |
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| Authors: | Lü Hai-bo YAO Wei-xing |
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| Institution: | Dept. of Aircraft Engin., Nanjing Univ. of Aero. and Astro., Nanjing 210016, China |
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| Abstract: | A residual strength model of elements' fatigue reliability evaluation is put forward. Obviously residual strength is the basis of this model and as a result the focus is on the residual strength. The general form of the residual strength model is discussed in detail and the degradation rule of the residual strength is studied analytically and experimentally. Based on it the expression to describe this rule is presented, and subsequently an approach to analyze the fatigue reliability of elements under constant amplitude and two\|block amplitude loading is given in detail. Two examples have been carried out to demonstrate the validity of the presented model. It is shown that the estimation has good correlation with the experiment. |
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| Keywords: | residual strength fatigue reliability status equation stress strength interference model |
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