| 永磁铁氧体烧结过程应力场有限元分析 |
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| 引用本文： | 陈锟,陈惠芬,刘克家.永磁铁氧体烧结过程应力场有限元分析[J].功能材料,2007,38(8):1276-1278. |
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| 作者姓名： | 陈锟 陈惠芬 刘克家 |
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| 作者单位： | 上海应用技术学院,材料工程系,上海,200235 |
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| 基金项目： | 上海市重点学科建设项目 |
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| 摘 要： | 利用有限元法对永磁铁氧体材料烧结过程的瞬态应力场进行了数值模拟分析,讨论了温度场变化对铁氧体磁瓦内部热应力的影响,得出磁瓦在烧结过程中的等效应力分布云图,结合分布图与热传导方程讨论了磁瓦烧结开裂问题中产生边裂和角裂的原因.同时分析了升温速率对应力场的影响,该分析结果反映了升温速率对磁瓦内部热应力最大值的影响规律.模拟结果为磁瓦烧结工艺制度的制定提供理论依据.
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| 关 键 词： | 应力场 有限元 烧结 永磁铁氧体 |
| 文章编号： | 1001-9731（2007）08-1276-03 |
| 修稿时间： | 2007-04-272007-06-15 |
Simulation of stress field in the sinter process of magnetic ferrite |
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| CHEN Kun,CHEN Hui-fen,LIU Ke-jia.Simulation of stress field in the sinter process of magnetic ferrite[J].Journal of Functional Materials,2007,38(8):1276-1278. |
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| Authors: | CHEN Kun CHEN Hui-fen LIU Ke-jia |
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| Affiliation: | Department of Material Engineering,Shanghai Institute of Technology,Shanghai 200235,China |
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| Abstract: | Transient stress field in the sinter process of magnetic ferrite was numerically simulated by using finite element method.The effects of temperature field variety for interior thermo stress of workpiece was discussed.Equivalent stress distribution plot of the workpiece during the sinter process is concluded.Reasons for causing side and corner crack in the sintering were discussed by combining equivalent stress distribution plot and heat exchange equation.Also the effects of calefactive velocity for stress field was analyzed.The results reveal the influencing rule of calefactive velocity for interior maximum thermo stress.The simulation provides theoretical evidence on making sinter technical system of workpiece. |
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| Keywords: | stress field finite element method sinter magnetic ferrite |
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