請問,CST EMS里進行靜磁仿真時,永磁參數(shù)如何設(shè)置
請教各位大牛,CST里進行靜磁仿真時,怎么設(shè)置釹鐵硼永磁體的比如Br,最大磁能積等等這些一些參數(shù),貌似沒找到相關(guān)永磁體的項啊
那個工作室?EMS?
都不知道說的什么?
對 就是在EMS里 EMS里只發(fā)現(xiàn)可以設(shè)置永磁體的邊界處的E或者B的值 但是這個B值是隨永磁的磁路改變而改變的 而我就是想用EMS來仿真某磁路下的永磁體邊界處的B值的。 而它現(xiàn)在卻讓我輸入此B值,所以就不知道怎么搞了。 永磁體一般給的參數(shù)是剩磁Br,最大磁能積等等這些參數(shù)。
額 見樓上
只知道EMS是仿真低頻用的,對于小編講的一點也不了解,沙發(fā)一下,坐等大牛
我是來學習的。
百度上查的:
http://zhidao.baidu.com/question/62210917.html
主要有如下3個性能參數(shù)來確定磁鐵的性能:
剩磁Br :永磁體經(jīng)磁化至技術(shù)飽和,并去掉外磁場后,所保留的Br稱為剩余磁感應(yīng)強度。
矯頑力Hc:使磁化至技術(shù)飽和的永磁體的B降低到零,所需要加的反向磁場強度稱為磁感矯頑力,簡
稱為矯頑力
磁能積BH:代表了磁鐵在氣隙空間(磁鐵兩磁極空間)所建立的磁能量密度,即氣隙單位體積的靜磁能量。由于這項能量等于磁鐵的Bm和Hm的乘積,因此稱為磁能積。
磁場:對磁極產(chǎn)生磁作用的空間為磁場
表面磁場:永磁體表面某一指定位置的磁感應(yīng)強度
Help里在EMS工作室搜索了一下Br,得到了下面的解釋:
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.
應(yīng)該是在Solve-Permanent Magnet…里可以設(shè)置。
哈哈 太謝謝小編大哥了 現(xiàn)在知道怎么用了 拜謝拜謝 吼吼 確實是在Solve里
不客氣,在回答問題的同時,我也在學習嘛!
這就是論壇的好處,能讓大家都學到知識,呵呵。
低頻這塊我做的也不多,以后多交流!
不知道在計算永磁時,邊界條件如何設(shè)置啊