| 含圆周非贯穿裂纹悬臂管道的振动分析与裂纹识别 |
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| 引用本文： | 胡家顺,孙文勇,周晶.含圆周非贯穿裂纹悬臂管道的振动分析与裂纹识别[J].振动与冲击,2011,30(5):18-22. |
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| 作者姓名： | 胡家顺 孙文勇 周晶 |
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| 作者单位： | 1. 中国石油集团安全环保技术研究院安全技术研究所，北京，1000832. 大连理工大学海岸和近海工程国家重点试验室，辽宁大连，116024 |
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| 基金项目： | 中国石油安全环保技术研究院基金，国家自然科学基金重点项目 |
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| 摘 要： | 摘 要：根据线性断裂力学理论和应变能释放原理，推导了含圆周非贯穿裂纹管道在轴力、剪力和弯矩等荷载作用下的局部柔度系数方程，利用适应性Simpson方法编写了数值积分程序进行局部柔度系数求解，建立了含裂纹管道的二维有限元模型进行含裂纹悬臂管道的振动特性分析，应用等值线图原理进行了悬臂管道的裂纹识别。研究结果表明：本文裂纹模型克服了当前裂纹模型仅针对特定的荷载模式或非空心截面的缺陷，基于等值线图法能有效识别含裂纹悬臂管道的裂纹位置、深度。
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| 关 键 词： | 振动分析 裂纹识别 局部柔度 管道 裂纹 |
| 收稿时间： | 2010-1-18 |
| 修稿时间： | 2010-2-22 |
Vibration analysis and crack identification of a cantilever pipe with a circumferential part-through crack |
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| HU Jia-shun,SUN Wen-yong,ZHOU Jing.Vibration analysis and crack identification of a cantilever pipe with a circumferential part-through crack[J].Journal of Vibration and Shock,2011,30(5):18-22. |
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| Authors: | HU Jia-shun SUN Wen-yong ZHOU Jing |
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| Affiliation: | 1. Research Department of Safety Technology, CNPC Research Institute of Safety & Environment Technology, Beijing, 100083, China)(2. The State key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 110624, China) |
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| Abstract: | The local flexibility coefficient equations of a pipe with a circumferential part-through crack subjected to axial force,shearing force and bending moment were derived by using theories of linear fracture mechanics and strain energy release principle.An adaptive Simpson quadrature method was used to conduct numerical integrations to obtain the flexibility coefficients.A finite element model was established to conduct the vibration analysis of a cracked cantilever pipe.In addition,the crack identifiation for... |
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| Keywords: | vibration analysis crack identification local flexibility pipe crack |
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