摘要
从工程应用的观点出发 ,阐述有限元法在电磁场数值分析中的应用。首先建立直流螺管式电磁铁的数学模型 ,并用有限元法对电磁铁进行了求解。得到电磁场的等磁位线、磁通密度等参数的分布规律及动铁芯的吸力与行程的关系。与实际测试的吸力基本吻合 ,相对误差为 5 .8%。为电磁铁的设计和安装过程中控制牵引力提供了理论依据 ,即控制了工作气隙δc,也就等于控制了牵引力 Fc。
Application of finite element method for numerical simulation of electromagnetic field was stated in this paper in view of engineering application. At first, mathematical model for DC spiratron type electromagnet was constructed and its mathematical model for electromagnet was solved with finite element method. Distribution of electromagnetic intensity, flux density isodynamic lines in electromagnet field and relation of electromagnetic traction and its displacement were obtained. Theoretical results tallies with its test and its relation errors is 5.8%. It is a theoretical groundwork that electromagnetic traction is controlled in designed and fixed electromagnet, i.e. controlling working air gap δc is controlling electromagnetic traction Fc.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2005年第2期100-103,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目 (项目编号 :5 0 2 75 0 63 )
"十五"国家科技攻关计划资助项目 (项目编号 :2 0 0 1BA2 0 3 B11)
