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| 应力比r对构件疲劳裂纹扩展的影响分析 | |
| 引用本文： | 张卫国,田洪,宓为建,刘园,董良才.应力比r对构件疲劳裂纹扩展的影响分析[J].中国工程机械学报,2008,6(4):403-408. |
| 作者姓名： | 张卫国 田洪 宓为建 刘园 董良才 |
| 作者单位： | 1. 上海海事大学,物流工程学院,上海,200135;同济大学,机械工程学院,上海,201804 2. 上海振华港机(集团)公司,上海,200125 3. 上海海事大学,物流工程学院,上海,200135 4. 同济大学,机械工程学院,上海,201804 |
| 摘 要： | 应用能量释放率法及Paris公式对疲劳裂纹扩展问题进行了研究,详细分析比较了在不同应力比r作用下,对箱形构件未穿透型裂纹剖面各积分点的应力强度因子及裂纹扩展速率的影响.所得结论可为工程设计及裂纹无损检测人员提供一定参考. |
| 关 键 词： | 能量释放率 应力比r 应力强度因子 裂纹扩展速率 |
Analysis of components' fatigue crack propagation under different stress ratio r |
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| ZHANG Wei-guo,TIAN Hong,MI Wei-jian,LIU Yuan,DONG Liang-cai.Analysis of components' fatigue crack propagation under different stress ratio r[J].Chinese Journal of Construction Machinery,2008,6(4):403-408. | |
| Authors: | ZHANG Wei-guo TIAN Hong MI Wei-jian LIU Yuan DONG Liang-cai |
| Affiliation: | ZHANG Wei-guo1,3,TIAN Hong2,MI Wei-jian1,LIU Yuan3,DONG Liang-cai1(1.School of Logistic Eng,Shanghai Maritime Univ,Shanghai 200135,China,2.Shanghai Zhenhua Port Machinery Co.,Ltd,Shanghai 200125,3.College of Mechanical Engineering,Tongji University,Shanghai 201804,China) |
| Abstract: | By employing such methods as energy release rate and Paris' law,the impacts from fatigue crack propagation are first analyzed.In comparison with diverse stress ratios,the stress intensity factor and crack propagation rate regarding box components are then detected based on the integral nodes on local crack sections.Finally,this approach can be set as a reference for engineering designers and crack inspectors. |
| Keywords: | energy release rate stress ratio stress intensity factor crack propagation rate |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
