| 螺纹要素对构件断裂力学特性影响的实验研究 |
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| 引用本文： | 尹峰.螺纹要素对构件断裂力学特性影响的实验研究[J].航空学报,2002,23(4):346-348. |
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| 作者姓名： | 尹峰 |
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| 作者单位： | 沈阳航空工业学院,研究生部,辽宁,沈阳,110034 |
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| 摘 要： | 在模拟实验的基础上,对飞机结构中常用的 3 0 Cr Mn Si A螺栓的应力强度因子 K进行了研究。根据已有的螺纹紧固件的应力强度因子的研究成果,利用类比的方法,在充分考虑螺纹要素的前提下,推导出了螺栓根部的应力强度因子 K表达式,并通过实验探讨了螺纹要素对构件断裂力学特性的影响。实验还表明,实验值与理论分析符合的很好。
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| 关 键 词： | 螺栓 表面裂纹 应力强度因子 疲劳试验 断裂力学 螺纹要素 |
| 文章编号： | 1000-6893(2002)04-0346-03 |
| 修稿时间： | 2001年10月18 |
EXPERIMENTAL RESEARCH OF THE INFLUENCE OF THREAD ON THE FRACTURE MECHANICS FEATURES OF STRUCTURE MEMBER |
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| YIN Feng.EXPERIMENTAL RESEARCH OF THE INFLUENCE OF THREAD ON THE FRACTURE MECHANICS FEATURES OF STRUCTURE MEMBER[J].Acta Aeronautica et Astronautica Sinica,2002,23(4):346-348. |
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| Authors: | YIN Feng |
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| Institution: | Department of Graduate Student,Shenyang Institute of Aeronautical Engineering, Shenyang 110034, China |
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| Abstract: | The stress intensity factors(SIFs)\| K are investigated for surface cracks in the thread ground of 30CrMnSiA bolts used in aircraft structure on the basis of the simulated experiments.According to the SIF research achievements obtained of the thread fastener,the epuations for the SIF\| K are devdloped by means of analogy for surface cracks in the thread ground of bolts under the condition of well\|considered thread elements.Experments are conducted to study the influence of the thread on fracture mechanics features of the structure member.The SIFs are compared between the analytical solution and experimental results.It is shown that good agreement is achieved between the experimental results and analytical solution evaluated using the SIFs' epuation derived by the author. |
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| Keywords: | bolt surface crack stress intensity factor fatigue test fracture mechanics thread elements |
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