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| 典型受载铁磁构件的数值模拟和磁特性 | |
| 引用本文： | 任吉林,李晓刚,宋凯,唐继红,马宏伟.典型受载铁磁构件的数值模拟和磁特性[J].北京科技大学学报,2005,27(6):684-687. |
| 作者姓名： | 任吉林 李晓刚 宋凯 唐继红 马宏伟 |
| 作者单位： | 1. 南昌航空工业学院,南昌,330034 2. 北京科技大学材料科学与工程学院,北京,100083 3. 兰炼技术中心设备防腐研究所,兰州,730060 |
| 基金项目： | 航空基金 , 科技部科研项目 |
| 摘 要： | 研究了铁磁构件在受载状态下表面产生漏磁的磁记忆现象,对含小孔平板进行了有限元分析,实测了受拉伸载荷时的漏磁场值.结果表明,应力集中对构件的磁特性有显著影响,在应力引起的小范围塑性变形区域存在有效的磁记忆信号,采用磁记忆方法对设备承载铁磁构件由应力集中造成的早期损伤进行检测是可行的. |
| 关 键 词： | 铁磁构件 应力集中 磁记忆检测 有限元法 受载 铁磁构件 数值模拟 磁特性 state loading components typical characteristic magnetic simulation 检测 早期损伤 设备 记忆方法 记忆信号 存在 变形区域 塑性 范围 |
| 收稿时间： | 10 13 2004 12:00AM |
| 修稿时间： | 12 10 2004 12:00AM |
Numerical simulation and magnetic characteristic of typical ferromagnetic components in loading state |
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| REN Jilin,LI Xiaogang,SONG Kai,TANG Jihong,MA Hongwei.Numerical simulation and magnetic characteristic of typical ferromagnetic components in loading state[J].Journal of University of Science and Technology Beijing,2005,27(6):684-687. | |
| Authors: | REN Jilin LI Xiaogang SONG Kai TANG Jihong MA Hongwei |
| Institution: | 1. Nanchang Institute of Aeronautical Technology, Nanchang 330034, China ;2. Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China; 3. Technology Centre, Research Institute of Equipment Corrosion Prevention, Lanzhou Oil-Refining Co,, Lanzhou 730060, China |
| Abstract: | The phenomenon of magnetic memory that the magnetic leakage field generates on the surface offerromagnetic components in loading state was investigated. The stress of the plate with a hole in the center was calculated by the finite element method and the magnetic leakage field of the plate under the load of tension was measured. The results indicate that stress concentration strongly affects the magnetic properties of ferromagnetic components. Valid magnetic memory signals exist in a small scale of plastic deformation zone. It is feasible to detect the initial damage of ferromagnetic components caused by stress concentration by the magnetic memory testing method. |
| Keywords: | ferromagnetic components stress concentration magnetic memory testing finite element analysis |
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