| 一种预测焊接结构疲劳寿命的新方法 |
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| 引用本文： | 颜云辉,张敬民.一种预测焊接结构疲劳寿命的新方法[J].东北大学学报(自然科学版),1992(4). |
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| 作者姓名： | 颜云辉 张敬民 |
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| 作者单位： | 东北工学院机械二系
(颜云辉)，东北工学院机械二系(张敬民) |
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| 摘 要： | 介绍了一种用于焊接结构疲劳寿命预测的方法。这种方法是基于功率谱密度等有关的统计参量,避开了常规疲劳寿命估算中对随机载荷谱进行循环计数的要求。根据输入及结构响应的频率成分,一般都可以预先估算出有关的统计参量,如功率谱密度函数等。文中给出了具体的计算实例,计算结果与实际情况比较吻合。
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| 关 键 词： | 焊接结构 疲劳寿命预测 功率谱密度 损伤概率密度函数 汽车车架 |
A New Method to Predict Fatigue Life of Welded Structures |
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| Yan Ynnhui,Zhang Jinmin.A New Method to Predict Fatigue Life of Welded Structures[J].Journal of Northeastern University(Natural Science),1992(4). |
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| Authors: | Yan Ynnhui Zhang Jinmin |
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| Institution: | Yan Ynnhui;Zhang Jinmin |
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| Abstract: | Describes a new method to predict the fatigue life of weldedstructures without cyclic counting of stochastic load spectrum, as a conven- tional practice in fatigue life estimation, taken into account. it is developedonly involving such statistical parameters as the density of power spectrumwhich will normally be pre-estimated. An instance of superheavy miningtruck chasis is included showing the calculation result in agreement withactual measurements. |
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| Keywords: | welded structure fatigue life prediction power spectrum density probability density function of damage truck chasis |
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