| 车轴钢疲劳小裂纹扩展特性 |
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| 引用本文： | 杨广里,杜彦良.车轴钢疲劳小裂纹扩展特性[J].北京交通大学学报(自然科学版),1990(2). |
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| 作者姓名： | 杨广里 杜彦良 |
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| 作者单位： | 北方交通大学工程力学研究所，北方交通大学工程力学研究所 |
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| 摘 要： | 本文论述了车轴钢在疲劳试验研究中小裂纹扩展的特性,并与传统的断裂力学中长裂纹扩展特性进行了比较,发现两者不同的特性.疲劳小裂纹扩展速率存在着先快后慢,尔后又加速扩展并逐渐接近长裂纹扩展速率的特性.在小裂纹扩展范围内,其特性是复杂的.
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| 关 键 词： | 车轴 钢 疲劳小裂纹 门槛值 疲劳断裂 裂纹扩展 |
Behaviour of Small Fatigue Crack Growth in Axle Steel |
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| Yang Guangli Du Yanliang.Behaviour of Small Fatigue Crack Growth in Axle Steel[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,1990(2). |
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| Authors: | Yang Guangli Du Yanliang |
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| Institution: | Institute of Engineering Mechanics |
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| Abstract: | This article makes research on the behaviour of small fatigue crack growth in axle steel and compares it with the behaviour of large crack growth calculated by traditional linear elasticity fracture mechanics.The study shows that both are different.The rate of small fatigue crack growth has the feature that the speed of crack growth is from fast to slow and gradually close to that of large fatigue crack growth. |
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| Keywords: | steel car axles fatigue small crack threshold condition fatigue fracture crack growth |
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