| 低周疲劳下45钢的寿命预测 |
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| 引用本文： | 张赟,鲁春朋,芮执元.低周疲劳下45钢的寿命预测[J].机械工程材料,2007,31(6):26-29. |
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| 作者姓名： | 张赟 鲁春朋 芮执元 |
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| 作者单位： | 兰州理工大学机电工程学院,甘肃兰州,730050;兰州理工大学机电工程学院,甘肃兰州,730050;兰州理工大学机电工程学院,甘肃兰州,730050 |
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| 摘 要： | 选取带有V型缺口45钢试样,通过控制加载过程中的应变幅,研究缺口对试样疲劳寿命的影响.并应用低周疲劳寿命预测理论,提出了修正的Manson寿命预测模型,用来预测带有V型缺口中45钢的低周疲劳寿命.模型的预测结果和试验结果吻合很好.
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| 关 键 词： | 低周疲劳 缺口试样 旋转弯曲 寿命预测 |
| 文章编号： | 1000-3738（2007）06-0026-04 |
| 修稿时间： | 2006-08-032006-10-31 |
Life Prediction of 45 Steel in Low Cycle Fatigue |
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| ZHANG Yun,LU Chun-peng,RUI Zhi-yuan.Life Prediction of 45 Steel in Low Cycle Fatigue[J].Materials For Mechanical Engineering,2007,31(6):26-29. |
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| Authors: | ZHANG Yun LU Chun-peng RUI Zhi-yuan |
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| Affiliation: | Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | By controlling the amplitude value of strain during the process of loading, taking 45 steel with precut V-notch as the subject investigated, studying the notch effect on fatigue life of round bar, and applying the knowledge of the life prediction theory on ductile materials in low cycle fatigue, the amended Manson equation and algorithm of the estimating-life model was proposed. The predicted curves and strain-life curves well agree with experimental data for medium carbon steel. |
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| Keywords: | low cycle fatigue notch specimen rotational bending life prediction |
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