| 线性疲劳损伤累积理论的研究 |
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| 引用本文： | 冯胜,程燕平,赵亚丽,程靳.线性疲劳损伤累积理论的研究[J].哈尔滨工业大学学报,2003,35(5):608-610. |
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| 作者姓名： | 冯胜 程燕平 赵亚丽 程靳 |
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| 作者单位： | 哈尔滨工业大学,航天学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 为解决两级载荷作用下的材料常在损伤值不为一时破坏的问题，在原有常用疲劳累积理论的基础上，考虑加载顺序与领域潜在损伤对材料疲劳寿命的影响，首先建立了一种线性疲劳损伤累积模型及其数学公式。然后利用两种材料疲劳实验数据，通过该模型预测其疲劳寿命。所得结果符合实际。最后得出该模型及其数学计算公式对材料进行寿命预测是可行的。
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| 关 键 词： | 材料 线性疲劳损伤累积理论 两级载荷 疲劳寿命 寿命预测 模型 |
| 文章编号： | 0367-6234(2003)05-0608-03 |
| 修稿时间： | 2002年4月25日 |
Linear fatigue damage cumulation theory |
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| FENG Sheng,CHENG Yan ping,ZHAO Ya li,CHENG Jin.Linear fatigue damage cumulation theory[J].Journal of Harbin Institute of Technology,2003,35(5):608-610. |
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| Authors: | FENG Sheng CHENG Yan ping ZHAO Ya li CHENG Jin |
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| Abstract: | In order to solve the problem of fatigue damage under two level loads not always equal to one, based on the conventional accumulative damage theories, an accumulative linear damage model and its math formula have been proposed with the effect of load sequence and domanial latent damage. Experimental data obtained with two kinds of materials and fatigue life established using the model are in good agreement with actual measurements. This shows that it is feasible to use the model and its formula to forecast the life of material. |
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| Keywords: | load sequence domanial latent damage linear fatigue damage accumulation life forecast |
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