| 结构连接件疲劳损伤容限全寿命设计方法 |
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| 引用本文： | 宁晋建.结构连接件疲劳损伤容限全寿命设计方法[J].飞机设计,2005(4):11-13. |
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| 作者姓名： | 宁晋建 |
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| 作者单位： | 沈阳飞机设计研究所,沈阳,110035 |
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| 摘 要： | 通过对结构疲劳裂纹形成寿命和裂纹扩展寿命的研究,提出了连接件疲劳全寿命的计算方法。本文分别研究了连接件的裂纹形成寿命和扩展寿命,研究了试片裂纹形成寿命与扩展寿命之间的关系,提出了用试片的S-N曲线确定连接件裂纹形成寿命的修正方法。通过典型连接件的计算给出了连接件的全寿命,并与试验结果进行了对比,得到了较好的吻合。本文希望通过典型连接件全寿命研究提出一种更合理、可靠的连接件疲劳分析的工程方法,经试验结果验证这种方法是可行的。
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| 关 键 词： | 疲劳 损伤容限 全寿命 |
| 修稿时间： | 2005年4月26日 |
A Calculation Approach to Total Fatigue Life of Structural Joints |
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| Ning Jinjian.A Calculation Approach to Total Fatigue Life of Structural Joints[J].Aircraft Design,2005(4):11-13. |
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| Authors: | Ning Jinjian |
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| Abstract: | A calculating method of the total fatigue life of structural joints is proposed based on a study on both the fatigue crack initiation life and crack growth life of joints.In this study,the relationship between the crack initiation life and the crack growth life of test specimens is examined and a correction technique of the crack initiation life for joints is suggested using the S-N curve for a test specimen,As an example,this approach is applied to the total fatigue life calculation of a typical structure joint and obtains results relatively agreed with corresponding experiment data.The demonstration result shows that the proposed approach is reasonable,credible and practical for engineering applications |
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| Keywords: | fatigue damage tolerance total life |
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