| 机翼构件不同载荷谱下的寿命反推 |
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| 引用本文： | 张卫方,刘高远,高威,陶春虎,赵爱国. 机翼构件不同载荷谱下的寿命反推[J]. 材料工程, 2002, 0(5): 42-45 |
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| 作者姓名： | 张卫方 刘高远 高威 陶春虎 赵爱国 |
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| 作者单位： | 北京航空材料研究院失效分析中心,北京,100095 |
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| 摘 要： | 对飞机机翼构件在不同截荷谱下的宏、微观断裂特征进行了观察与分析，并结合载荷谱中的应力变化特点，对A飞机和B飞机翼构件在不同载荷谱下的裂纹扩展寿命进行反推。结果表明，载荷谱中不同的应力变化在失效构件断口上反映出不同的宏、微观断裂特征，采用断口定量分析技术可反推构件的疲劳寿命，并依此反推构件疲劳裂纹形核的先后顺序。
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| 关 键 词： | 载荷谱 断口定量分析 寿命反推 疲劳弧线 |
| 文章编号： | 1001-4381(2002)05-0042-04 |
| 修稿时间： | 2001-08-12 |
Fatigue Life Retroestimation of Wing Structures on Different Load Spectra |
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| ZHANG Wei fang,LIU Gao yuan,GAO Wei,TAO Chun hu,ZHAO Ai guo. Fatigue Life Retroestimation of Wing Structures on Different Load Spectra[J]. Journal of Materials Engineering, 2002, 0(5): 42-45 |
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| Authors: | ZHANG Wei fang LIU Gao yuan GAO Wei TAO Chun hu ZHAO Ai guo |
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| Abstract: | The macro and micro fracture characteristics of wing structures on two load spectra were observed Crack spread life on different load spectra for wing structures on A and B airplane was retroestimated on account of stress distribution respectively The results show that different macro and micro fracture characteristics on fatigue spread zone are formed with the variety of stress distribution in a load spectrum The fatigue life of engineering structure can be retroestimated by means of fracture quantity analysis Also, the crack formation sequence can be obtained |
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| Keywords: | load spectrum fracture quantity analysis fatigue life retroestimation fatigue line |
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