那个工作室?EMS?
都不知道说的什么?
对就是在EMS里EMS里只发现可以设置永磁体的边界处的E或者B的值但是这个B值是随永磁的磁路改变而改变的 而我就是想用EMS来仿真某磁路下的永磁体边界处的B值的。 而它现在却让我输入此B值,所以就不知道怎么搞了。 永磁体一般给的参数是剩磁Br,最大磁能积等等这些参数。
额 见楼上
只知道EMS是仿真低频用的,对于楼主讲的一点也不了解,沙发一下,坐等专家
我是来学习的。
百度上查的:
http://zhidao.baidu.com/question/62210917.html
主要有如下3个性能参数来确定磁铁的性能:
剩磁Br :永磁体经磁化至技术饱和,并去掉外磁场后,所保留的Br称为剩余磁感应强度。
矫顽力Hc:使磁化至技术饱和的永磁体的B降低到零,所需要加的反向磁场强度称为磁感矫顽力,简
称为矫顽力
磁能积BH:代表了磁铁在气隙空间(磁铁两磁极空间)所建立的磁能量密度,即气隙单位体积的静磁能量。由于这项能量等于磁铁的Bm和Hm的乘积,因此称为磁能积。
磁场:对磁极产生磁作用的空间为磁场
表面磁场:永磁体表面某一指定位置的磁感应强度
Help里在EMS工作室搜索了一下Br,得到了下面的解释:
Permeability/Coercivity frame
In these edit boxes material settings of the underlying solid can be changed. You can specify either the permeability Mue (which is correlated with the Mue value in the material dialog box) or the coercivity Hc. The permeability and coercivity values are associated with each other and with the remanence flux density Br. For this reason they are adapted once one of the mentioned values has been changed.
Note:
Changing the material parameter in the magnet dialog box will change this parameter for all solids in the model which have the same material like the solid under consideration.
The coercivity unit is A/m. If you change the coercivity value Hc, you can control your settings by checking that the resulting permeability Mue is near 1. Materials with much higher permeability are rather rare.
For the mathematical model, it is assumed that the demagnetization curve runs linearly. This shall be demonstrated by the following figure:
The figure displays a nonlinear demagnetization curve in a typical data sheet. The specification of the coercivity might not imply the same slope which will be used for the mathematical model. Thus try to make sure that the linearization approximation fits the actual slope of the demagnetization curve near Br rather than matching the coercivity value Hc exactly.
应该是在Solve-Permanent Magnet…里可以设置。
哈哈太谢谢站长大哥了现在知道怎么用了拜谢拜谢吼吼确实是在Solve里
不客气,在回答问题的同时,我也在学习嘛!
这就是论坛的好处,能让大家都学到知识,呵呵。
低频这块我做的也不多,以后多交流!
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