MagNet的Mesh功能怎么样
MagNet 6.12.2,建了个模型,让软件自动Mesh,结果一个晚上都没Mesh成功(在Maxwell 3D v11上成功了)这个软件的自动Mesh功能到底强不强,手动Mesh会好一点吗,望大侠指教,谢谢! MAGNET的MESH很方便的,自动手动都行。不成功可能是模型有问题。 不知道有没有中文版的magnet软件 对我来说英文版的太痛苦了:funk: 好像magnet 的剖分功能不是很强大 个人认为MAGNET的MESH功能还是可以的,完全足够做电机的有限元分析了。 要好好学习! 我觉得还不错吧 楼主说的应该是3d mesh
我觉得3d mesh是很见软件功力的
如果用过一段时间,基本不会出傻瓜错误,可能magnet somehow不能mesh这种模型,我是相信这是绝对可能的
先不说magnet 3d mesh,大家要是做不出来3d旋转电机分析,可能都要加一个楔子才能解决(我也很惊讶,可是人家技术支持这么说的,帮助也是这么写的,实在难以想象),怎么说呢,软件太简单了功能的水平也有限。还有,算个电感互感还要自己做那个循环,不能为用户考虑一下么,什么都要用户做,买软件是干什么用的,都自己回家编程序得了。我在以前的帖子详细说过这事儿。
还有MAGNET很多词语出于有别于其它软件还是什么的原因吧,就偏偏起个怪怪的名,什么点、面、线,都不叫point,line,area,叫什么vertice, edge, surface.
他们的人还特别自大,没见过这么狂妄的人了,发附件包括png还是什么格式的附件被我们公司的邮件系统自动删除,然后人家说让我们公司的网管改一下设置不要删除附件,他们以为谁都要服从他们么?还有其他的我就不说了,每次问问题,都告诉我帮助哪里哪里找,就是假设用户都是白痴、在问问题之前都不看帮助的。有时候为了不让他们来这套,我就费力地把他们的document center的内容写上,然后说我不理解,有时候甚至说别的软件是怎么做的,我感觉你们这个怎样。。。他们一律假设我毫无基础,不来来回回搞个半天不能证明我不是白痴,很打击用这个软件的积极性 可以自动剖分,也可以手动,一般自动剖分出来的mesh不一定符合你的要求,那就需要你手动设置,根据你的要求可以设大些也可设小些。 我ansoft用过,magnet也用过,感觉magnet的剖分效率不是很高,同样的模型,分别用maxwell 12和magnet 6.11.2做瞬态运动仿真,相同剖分下,相同步长,相同步数,magnet仿真要慢很多,每次重新剖分网格时时间比较长 关于网格划分:
1、对于3D网格剖分,请一定要控制好参数CurvatureRefinementMinimumElementSize,它的意思是曲面网格的最小网格尺寸,控制好该参数,你的3D模型的曲面网格就能很好的控制,加快网格剖分速度。
2、对于2D的区域网格加密,请参考以下:
Control regionsIt may be advantageous to define control regions instead of constructing control components. Since no materials are associated with control regions, nothing prevents one such region from being occupied by multiple materials (whereas in this case multiple control components would be required). For example, five control regions (four circular and one rectangular) are sufficient to produce the C-core mesh shown below. In 3D, another advantage of control regions is that they can be surfaces (this would not be possible with control components since zero-volume components are not allowed in 3D solving).
http://www.infolytica.com/secured/customer/common/doccenter/Meshing/Control%20tools/Manual/Indirect%20methods/images/C-Core%202D%20(refinement%20control%20regions).pngInitial 2D Mesh of C-core model (with air box).DefinitionThe top-level parameter MeshRefinementControlRegions allows one to specify Maximum Element Sizes on eight types of control regions. In the figure below, left, the parameter is set to the value corresponding to the previous figure. Setting this parameter is best done via the SetMeshRefinementControlRegions script form shown below, right.
http://www.infolytica.com/secured/customer/common/doccenter/Meshing/Control%20tools/Manual/Indirect%20methods/images/MeshRefinementControlRegions.png http://www.infolytica.com/secured/customer/common/doccenter/Meshing/Utilities/Descriptions/images/SetMeshRefinementControlRegions.pngMeshRefinementControlRegions parameter and SetMeshRefinementControlRegions script form.The MeshRefinementControlRegions parameter specifies control regions as a list of variant arrays contained in a larger variant array. Its format is therefore
{{Control region}} or {{Control region 1},{Control region 2}, ...}.
Notice that there are at least two sets of braces. The format of Control region is one of the following:
[*]Circle-based regions Circle for 2D 'Circle', MES, , radius
Annulus for 2D 'Annulus', MES, , radius, outer radius
Sphere 'Sphere', MES, , radius
Circle 'Circle', MES, , , radius
Cylinder 'Cylinder', MES, , , radius, length
[*]Parallelogram-based regions Parallelogram for 2D 'Plane', MES, , ,
Parallelogram 'Plane', MES, , ,
Parallelepiped 'Cube', MES, , , ,
Units are in meters. The various terms have the following English meanings
MES Maximum Element Size
c center
axis axis vector
wvec width vector
hvec height vector
dvec depth vector
and the following geometric meanings:
http://www.infolytica.com/secured/customer/common/doccenter/Meshing/Control%20tools/Manual/Indirect%20methods/images/For%202D.pnghttp://www.infolytica.com/secured/customer/common/doccenter/Meshing/Control%20tools/Manual/Indirect%20methods/images/For%203D.png The eight types of control regions and their defining terms.----------------------------------------------------------------------------------------------
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具体做法:
选中项目名称,右键属性,打开参数,设置MeshRefinementControlRegions 选项,例如{{'Annulus',0.05%mm,,3%mm,3.5%mm}} 则表示设置圆心0,0,内半径3mm,外半径3.5mm的圆环区域的网格最大值为0.05mm。 ,结果如下图:
file:///C:/Documents%20and%20Settings/u/My%20Documents/My%20Pictures/Catch0.jpg
3、对于网格剖分,只要掌握软件的基本剖分参数,基本上不会出现楼上各位的烦扰的。 自动剖分计算会有点不准确
可以调整,但有点麻烦
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