| 疲劳剩余强度的可靠性研究 |
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| 引用本文： | 曾珊,凌树森.疲劳剩余强度的可靠性研究[J].力学学报,1998,30(2):220-228. |
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| 作者姓名： | 曾珊 凌树森 |
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| 作者单位： | 中国海程总公司 |
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| 摘 要： | 利用断裂力学，疲劳和可靠性分析方法，对疲劳过程中的剩余强度进行了研究，．通过七组试样的试验，得到了发动机连杆材料１８ＣｒＮｉＷＡ钢的Ｐ Ｒ Ｓ Ｎ曲线（即失效概率 剩余强度 疲劳应力 循环寿命曲线）．本文的分析方法对其他承受疲劳载荷的零部件和材料，具有重要的推广应用价值．
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| 关 键 词： | 疲劳 剩余强度 可靠性 P－R－S－N曲线 |
STUDY ON THE RELIABILITY OF RESIDUAL STRENGTH IN FATIGUE |
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| Zeng Shan China General Company of Oversea Engineering,Shanghai ,China Ling Shusen Shanghai Research Institute of Material,Shanghai ,China.STUDY ON THE RELIABILITY OF RESIDUAL STRENGTH IN FATIGUE[J].chinese journal of theoretical and applied mechanics,1998,30(2):220-228. |
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| Authors: | Zeng Shan China General Company of Oversea Engineering Shanghai China Ling Shusen Shanghai Research Institute of Material Shanghai China |
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| Institution: | Zeng Shan China General Company of Oversea Engineering,Shanghai 200122,China Ling Shusen Shanghai Research Institute of Material,Shanghai 200437,China |
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| Abstract: | Reliability study of fatigue problems can be divided into two types. The first type is that we can only consider the final results of fatigue process fracture. The failure probability is P f(N)=P(N fN) . The second type is that we must consider the fatigue process and take the component's strength (i.e. residual strength) as the function of cyclic number N . It's failure probability is P f(N)=P . We assume that the stage of the crack initiation is finished. Then the residual strength R a... |
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| Keywords: | fatigue residual strength reliability P R S N curve（ P —Failure Probability R —Residual strength S —Fatigue stress N —Cyclic life） |
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