| 某水坝船闸人字门拉杆破坏的断裂动力学分析 |
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| 引用本文： | 范天佑,郭瑞平.某水坝船闸人字门拉杆破坏的断裂动力学分析[J].北京理工大学学报,2004,24(7):563-566. |
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| 作者姓名： | 范天佑 郭瑞平 |
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| 作者单位： | 北京理工大学,理学院,北京,100081;北京理工大学,理学院,北京,100081 |
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| 摘 要： | 对某水坝船闸人字门拉杆断裂事故进行断裂动力学的定性与定量分析.在定量分析中,编写了该裂纹结构受冲击载荷作用下的全尺寸三维动态有限元程序,并进行了大规模的数值计算,确定了表面裂纹动态应力强度因子,论证了该事故发生的原因.分析结果有助于防止水坝船闸人字门拉杆类似事故的发生以及采取相关措施.
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| 关 键 词： | 水坝船闸 人字门拉杆 断裂 静态分析 动态分析 动态断裂韧性 |
| 文章编号： | 1001-0645(2004)07-0563-04 |
| 收稿时间： | 2004/4/12 0:00:00 |
| 修稿时间： | 2004年4月12日 |
Fracture Dynamics Analysis for an Event of Failure in the Gudgeon Link for the Miter Gate of a Dam |
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| FAN Tian-you and GUO Rui-ping.Fracture Dynamics Analysis for an Event of Failure in the Gudgeon Link for the Miter Gate of a Dam[J].Journal of Beijing Institute of Technology(Natural Science Edition),2004,24(7):563-566. |
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| Authors: | FAN Tian-you and GUO Rui-ping |
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| Institution: | School of Science, Beijing Institute of Technology, Beijing100081, China;School of Science, Beijing Institute of Technology, Beijing100081, China |
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| Abstract: | A fracture dynamics analysis is given to an accident on a gudgeon link of the miter gate of a dam. The study gives a qualitative and quantitative dynamic fracture analysis, and a three-dimensional finite element program is developed to compute the dynamic stress intensity factor for a semi-elliptic surface crack in an elastic solid of finite size under impact loading. The results will be helpful to reveal the causes of the accident and to provide suggestions of precaution to avoid similar accidents. |
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| Keywords: | miter gate of a dam gudgeon link fracture static analysis dynamic analysis dynamic fracture toughness |
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