| DFR法结构细节疲劳强度分析 |
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| 引用本文： | 袁伟,孙秦. DFR法结构细节疲劳强度分析[J]. 陕西理工学院学报(自然科学版), 2007, 23(1): 9-11 |
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| 作者姓名： | 袁伟 孙秦 |
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| 作者单位： | 西北工业大学,航空学院,陕西,西安,710072 |
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| 摘 要： | 论述了细节疲劳强度额定值(DFR)的意义及各个DFR值之间的关系。通过对铝合金7050-T7451试件在3种不同加工状态下的DFR试验研究,试验结果分析表明,单纯地改善孔的表面粗糙度对其疲劳强度没有明显的影响,而挤压强化却明显提高了孔的细节疲劳强度。
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| 关 键 词： | 细节疲劳强度额定值 疲劳试验 疲劳寿命 |
| 文章编号： | 1673-2944（2007）01-0009-03 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-07-28 |
Fatigue intensity analysis of structure detail based on detail fatigue rating |
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| YUAN Wei,SUN Qin. Fatigue intensity analysis of structure detail based on detail fatigue rating[J]. Journal of Shananxi University of Technology(Natural Science Edition), 2007, 23(1): 9-11 |
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| Authors: | YUAN Wei SUN Qin |
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| Abstract: | In this paper,the definition of detail fatigue rating(DFR)and the relation of various detail fatigue rating were dissertated.By the experimental studies of DFR of 7050-T7451 aluminum alloy were con- ducted in three kinds of different machining method.The results show that the method of simply improving the surface quality of the hole didn't work in the fatigue intensity obviously,but cold-working has been obviously strengthened. |
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| Keywords: | detail fatigue rating(DFR) fatigue test fatigue life |
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