| 非等效累积损伤模型 |
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| 引用本文： | 孙振铎,吕松峰,侯东勃,张明洋.非等效累积损伤模型[J].河北大学学报(自然科学版),2022,42(6):580. |
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| 作者姓名： | 孙振铎 吕松峰 侯东勃 张明洋 |
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| 基金项目： | 河北省自然科学基金资助项目(E2018201265);河北省高等学校科学技术研究项目(QN2017307) |
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| 摘 要： | 开展了45号钢在变幅加载下的疲劳试验,基于试验结果,对Miner模型、Manson-Halford模型、Corten-Dolan模型和叶笃毅模型的预测精度进行对比分析,并基于非等效累积损伤原则,以Miner模型和Manson-Halford模型为基础分别构建了2种新的非等效累积损伤模型.结果表明:4种模型中,Manson-Halford模型的预测精度好于其余3种模型,而本文构建的新的非等效累积损伤模型的预测结果要优于Manson-Halford模型,并且其计算模式较为简便,适宜工程应用.
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| 关 键 词： | 疲劳 非等效损伤 累积损伤模型 |
| 收稿时间： | 2021-12-15 |
Nonequivalent cumulative damage model |
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| SUN Zhenduo,LYU Songfeng,HOU Dongbo,ZHANG Mingyang.Nonequivalent cumulative damage model[J].Journal of Hebei University (Natural Science Edition),2022,42(6):580. |
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| Authors: | SUN Zhenduo LYU Songfeng HOU Dongbo ZHANG Mingyang |
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| Institution: | 1.School of Quality and Technical Supervision, Hebei University, Baoding 071002, China; 2.Hebei Technology Innovation Center for Lightweight of New Energy Vehicle Power System, Hebei University, Baoding 071000, China; 3.Beijing Institute of Remote Sensing Equipment, Beijing 100854, China |
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| Abstract: | The fatigue test of No.45 steel under variable amplitude loading was carried out. Based on the experimental results, the prediction accuracy of Miner model, Manson-Halford model, Cortan-Dolan model and YE Duyi model is compared and analyzed. Based on Miner model and Manson-Halford model, two new nonequivalent cumulative damage models are constructed respectively with the principle of nonequivalent cumulative damage. The results show that, the prediction accuracy of Manson-Halford model is better than the other three models, and the prediction results of new nonequivalent cumulative damage models constructed in this paper are better than that of Manson-Halford model, and its calculation mode is relatively simple and suitable for engineering application. |
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| Keywords: | fatigue nonequivalent damage cumulative damage model |
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