| 复杂载荷历程下疲劳寿命的预测方法 |
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| 引用本文： | 彭朝军,诸文农.复杂载荷历程下疲劳寿命的预测方法[J].吉林大学学报(工学版),1993(1). |
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| 作者姓名： | 彭朝军 诸文农 |
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| 作者单位： | 吉林工业大学工程机械系
(彭朝军)，吉林工业大学工程机械系(诸文农) |
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| 摘 要： | 近年来局部应力-应变法在疲劳寿命预测中,越来越受到人们的高度重视。但普通的Neuber局部应力-应变法对于每一名义应力变程都需要建立新的坐标原点,并解非线性方程组。为此本文对其算法技巧进行了研究。算例表明,本文提出的新算法,能保证足够精度,程序得以简化,运算速度大幅度提高。
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| 关 键 词： | 复杂载荷 疲劳寿命预测 局部应力-应变 循环计数 |
Ivestigation on the Methods of Fatigue Life Prediction under Complex Load Histories |
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| Peng Zhaojun,Zhu Wennong.Ivestigation on the Methods of Fatigue Life Prediction under Complex Load Histories[J].Journal of Jilin University:Eng and Technol Ed,1993(1). |
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| Authors: | Peng Zhaojun Zhu Wennong |
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| Abstract: | In recent years, the Local Stress -strain Method of fatigue life predicetion is becoming more and more popular. But when the common Neuber's local stress -strain method is used it is necessary to establish a new coordinate origin and to resolve two nonliner equations to each nominel stress reversal. For this reason, the techniques of calculation methods are studied in this paper. The calculation example shows that the new technique presented in the paper possesses the advantages of single program and high calculation speed. |
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| Keywords: | complex load histories fatigue life predication local stress -strain cycle counting |
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