磁疗用圆片永磁磁源空间磁场有限元分析

目的：研究圆片磁源空间磁场不同参数的量值和分布,为定量使用圆片磁源提供多参数计算依据。方法：采用有限元数值法计算得出的圆片磁源空间磁场的矢量磁位、磁感强度、磁场能量密度量值和空间分布图,并计算绘出磁感强度等值线和磁力线。结果：圆片磁源空间磁场的矢量磁位、磁感强度和磁场能量密度在磁源轴向（X轴）单调下降,在磁源极面径向（Y轴）由中心到半径处单调增加、过半径后单调下降,总体趋势随距磁源距离的增加而下降。磁感强度等值线和磁力线更直观地描述了磁场的变化。结论：多参数磁源空间磁场的计算,对于更准确地进行磁疗定量研究是非常必要的。

Quantitative Analysis Study on Space Fields of Circular Magnets Applying to Therapy

Objective：To study the space fields of circular magnets to provide calculated basis for quantitative use of magnets in different parameters.Methods：The calculating values and space graphics of magnetic vector potential,magnetic induction,magnetic energy density were showed by the finite element method.Magnetic induction isolines and magnetic force lines were drawn.Results：Magnetic vector potential,magnetic induction,magnetic energy density,reducing on the axis（X axis） and increasing in the radius or reducing out the radius on the polar plane（Y axis）,reduced with distance going up away from circular magnets in brief.Magnetic induction isolines and magnetic force lines described the changes of magnetic fields in distinct.Conclusions：It was a necessary to calculate magnetic fields in different parameters for going on quantitative research of magnetic therapy with accuracy.