| 采用确定性裂纹增长方法对铝合金铆接结构寿命分析的研究 |
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| 引用本文： | 赵 平,李旭东,于化东,吴东流.采用确定性裂纹增长方法对铝合金铆接结构寿命分析的研究[J].工程力学,2014,31(6):35-41. |
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| 作者姓名： | 赵 平 李旭东 于化东 吴东流 |
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| 作者单位： | 1.长春理工大学机电工程学院, 长春 130022 |
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| 基金项目： | 国防科技工业技术基础科研项目(Z052011T001) |
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| 摘 要： | 对一种典型的航空铝合金铆接结构模型试件进行了疲劳试验. 针对该模型分别采用确定性裂纹增长方法和等效SSF法进行了寿命评估, 并与试验结果进行了比较. 结果显示, 两种评估方法都具有良好的评估精度. 当采用确定性裂纹增长方法对结构寿命进行分析时, 必须通过试验对于结构原始疲劳质量进行准确的评估, 结构寿命的评估结果会敏感的随着结构细节初始缺陷尺寸上界的变化而变化.
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| 关 键 词： | 固体力学 寿命评估 确定性裂纹增长方法 原始疲劳质量 铆接结构 |
| 收稿时间： | 2012-12-30 |
STUDY FOR LIFE PREDICTION OF RIVETED ALUMINUM ALLOY STRUCTURES USING DETERMINISTIC CRACK GROWTH ANALYSIS METHOD |
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| Affiliation: | 1.Changchun University of Science and Technology, College of Mechanical and Electric Engineering, Changchun 130022, China2.China Aero-Polytechnology Establishment, Beijing 100028, China |
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| Abstract: | Fatigue testing of a typical model of an aluminum alloy aero-riveted structure was carried out. The deterministic crack growth analysis method and equivalent SSF method were used to make life assessments of the model and the assessment results were compared with the experiment results. The results showed that the two assessment methods both had good prediction accuracy. Initial structural fatigue must be accurately assessed experimentally when predicting structure life with the deterministic crack growth analysis method, because the structure life assessment results closely reflect the size of initial structural faults. |
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