| 焊接结构长寿命区疲劳累积损伤的概率模型 |
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| 引用本文： | 吕澎民,赵邦华.焊接结构长寿命区疲劳累积损伤的概率模型[J].应用力学学报,1999,16(1):99-103. |
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| 作者姓名： | 吕澎民 赵邦华 |
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| 作者单位： | 北方交通大学(吕澎民)，兰州铁道学院(赵邦华)，西南交通大学(严隽耄) |
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| 摘 要： | 根据焊接结构在各种随机谱载荷下长寿命区疲劳试验的有关资料，对变幅载荷下焊接结构在长寿命区疲劳累积损伤的分布规律进行了统计分析，根据长寿命区疲劳高度离散性的特点，提出了一种变标准差的概率设计模型。
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| 关 键 词： | 焊接结构 随机载荷 长寿命区 概率设计 疲劳 |
A Probabilistic Model of the Fatigue Cumulation Damage for the Welded Structure in the Long Life Fatigue |
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| Lu Pengmin,Zhao Banghua,Yan Junmao.A Probabilistic Model of the Fatigue Cumulation Damage for the Welded Structure in the Long Life Fatigue[J].Chinese Journal of Applied Mechanics,1999,16(1):99-103. |
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| Authors: | Lu Pengmin Zhao Banghua Yan Junmao |
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| Abstract: | According to the relative experimental data of welded structures in the long life range under a variety of random loading spectrums, the law of fatigue cumulation damage for the welded structures in the long life range under variable amplitude loading is analysed by the statistical method. On the high scattered feature of fatigue life in the long life range, a new probabilistic design model which has a changeable standard deviation is proposed. |
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| Keywords: | welded structure random loading long life range probabilistic design |
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