磁铁
螺线管
磁场
理想(伦理)
领域(数学)
度量(数据仓库)
物理
有限元法
计算物理学
磁铁之间的作用力
磁能
核磁共振
机械
凝聚态物理
计算机科学
磁化
数学
热力学
认识论
哲学
数据库
纯数学
量子力学
标识
DOI:10.4283/jmag.2023.28.1.064
摘要
For magnetic field calculations, cylindrical permanent magnets are often approximated as ideal, azimuthally symmetric solenoids. Despite the frequent usage of this approximation, research papers demonstrating the validity and limitations of this approach are scarcely available. In this paper, the experimentally derived magnetic field of a cylindrical permanent magnet is compared with the semi-analytically calculated magnetic field of an ideal solenoid. An experimental setup for measuring the magnetic field distribution is demonstrated and employed for gathering the data. The proposed setup allows to measure the distributions of the axial and radial components of the magnetic field surrounding the magnet. In addition, we calculated the magnetic field using the FEM method and compared it with the solution of an ideal solenoid and discussed the obtained deviation.
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