| 铁磁试件的力-磁效应分析和相关参数估算 |
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| 引用本文： | 任尚坤,任吉林,宋凯.铁磁试件的力-磁效应分析和相关参数估算[J].河南师范大学学报(自然科学版),2007,35(1):78-82. |
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| 作者姓名： | 任尚坤 任吉林 宋凯 |
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| 作者单位： | 南昌航空工业学院,无损检测技术教育部重点实验室,南昌,330063 |
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| 基金项目： | 国家航空科学基金
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无损检测技术教育部重点实验室基金
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南昌航院博士基金 |
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| 摘 要： | 为了有效地表征铁磁材料力-磁效应的磁化规律,对Langevin定律进行了修正.采用了一种新的技术处理方法,引入了有效场因子a、磁畴同向取向阻尼因子γ、磁畴场常数β、磁致伸缩与磁化强度关联系数b等基本概念,并估算了这些量数值的大小和基本的变化规律.分析了力-磁效应的基本特征,从定性和定量的角度估算了应力对试件磁化的影响.在这种模型中,说明地磁场对力-磁效应的产生具有不可缺少的作用.
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| 关 键 词： | 应力-磁化耦合 磁机效应 磁弹性 理论模型 |
| 文章编号： | 1000-2367(2007)01-0078-05 |
| 修稿时间： | 2006年9月25日 |
Theoretical Analyzing of Stress-magnetization Effect and Estimation of Related Parameters for Ferromagnetic Items |
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| REN Shang-kun,REN Ji-lin,SONG Kai.Theoretical Analyzing of Stress-magnetization Effect and Estimation of Related Parameters for Ferromagnetic Items[J].Journal of Henan Normal University(Natural Science),2007,35(1):78-82. |
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| Authors: | REN Shang-kun REN Ji-lin SONG Kai |
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| Abstract: | A new technical processing method was adopted.Some parameters and elemental concepts of ratio a of heat-magnetism energy,turn damping coefficient γ of magnetic domain,domain field constant β,related coefficient b of magnetostriction-magnetization were introduced.The numerical values and basic changing laws of the parameters were estimated.We made some correcting for Langevin law In order to make it to magnetizing process of ferromagnetic items.The elemental characteristic of effects of stress-magnetization was analyzed,and the influences of stress-magnetism on magnetization of ferromagnetic items were estimated from the viewpoints of nature and quantify.It indicated that geomagnetism is very important for stress-magnetism effects. |
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| Keywords: | stress-magnetization coupled effect magneto-mechanical effect magneto-elasticity theoretical model |
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