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发表于 2005-9-21 11:29:46
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来自 美国
Re:Ansoft工程电磁场有限元分析(中文书籍,电子工业出版社)
zengxiaodong wrote:
书不怎么的!
几乎就是抄英文资料I don't know,当然Ansoft软件本身就很差,远没有Ansys方便.Disagree!!!!!
例如:温度场\应力场问题,Ansys绝对就是拿手好戏,非线性\动态\瞬态问题都能求解,比Ansoft不知要强多少倍!ANSYS structural analysis is its main feature in the past. So it is reasonable that ansys is good in structrual. But Ansoft is better in EM field. Ansoft is good at EM analysis just like ANSYS is good at structual analysis. You can ask professors or engineers in EM field numerical simulation.
就拿三维电磁场来说:Ansys提供了磁标量法\磁矢量法\棱边元三种求解方法,磁标量法主要用于静磁场,其他2种可用于静磁场\谐波场\瞬态场的求解,而Ansoft只提供了棱边元一种求解方法!I don't care which method it use, but I care the solving time and accuracy. Ansoft is better than ansys in both aspects
磁标量方法用于对导体区不感兴趣的问题,大大减少了自由度数目和求解费用;This situation is not common
磁矢量法求解费用高,但是适应性最广,可考虑运动效应\速度效应\场路耦合等,另外可以求解不含铁磁质区域的问题.在区域中铁磁物质和非铁磁物质的交界面处,由于散度条件的强加,会导致精度的降低,这是磁矢量法的一个缺点;
棱边元方法适用于多数的动态和瞬态场问题,但是不能考虑速度效应\运动效应\场路耦合\,也不能求解不含铁磁物质区域的问题.
此外,Ansys还能求解高频电磁场问题以及电路问题,对于电场问题则提供了h方法和p方法,求解精度极大提高.
至于电磁场和应力场的耦合,电磁场与温度场的耦合,更是Ansoft所不能比拟的!
Ansoft的学习资料奇少,不仅外面流传少,该公司自己也没有,至少理论手册没见到,详细的示范教程没见到,评估算例不丰富.这个公司是一个相当封闭的公司,产品界面长期不改进,连盗版者都不愿破解其产品,这是有某些理由的.
It is you who didn't find it!!! Ansoft is so easy that only tutorial is enough to get started.
Moreover, if you want to know more, see
Ansoft Training 之 Maxwell and ePhysical 视频教程:
ftp://sdrj.kmip.net/5.自由交流空间/【教程】/Ansoft/max&eph traning.iso
and
http://www.simwe.com/forum/viewthread.php?tid=587968
有鉴于此,建议搞电磁场的同仁,尽快摆脱迷信思想,改学Ansys,最终您将会发觉这绝对是正确的选择!
This conclusion is almost wrong. Nobody will agree with you. |
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