Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Permanent Magnet
Posted 2010/02/10 15:33 GMT-5 Version 5.1 4 Replies
Please login with a confirmed email address before reporting spam
Hello All,
I am fairly new to Comsol and I am just beginning to learn about Magnetics. I am trying to model a permanent magnet in Comsol of 0.6T. As a result, I define the material properties as 0.6T, but when the analysis is complete, it only shows a max of 0.45T or so. Is there a reason it does this? I thought by defining it as 0.6T, that it should be max value. I would appreciate any input you all may be able to provide.
Thanks,
Jim
I am fairly new to Comsol and I am just beginning to learn about Magnetics. I am trying to model a permanent magnet in Comsol of 0.6T. As a result, I define the material properties as 0.6T, but when the analysis is complete, it only shows a max of 0.45T or so. Is there a reason it does this? I thought by defining it as 0.6T, that it should be max value. I would appreciate any input you all may be able to provide.
Thanks,
Jim
4 Replies Last Post 2010/03/19 1:20 GMT-4
Please login with a confirmed email address before reporting spam
Posted:
2 decades ago
The values of magnetic material parameters such as Br and Hci do not all by themselves tell you directly what local B and H fields will be. The magnet's geometry and the details of the magnetic circuit (including air, iron, etc) all matter a great deal. You need to learn more about permanent magnets and magnetic circuits.
For detailed guidance, see for example:
Permanent Magnet Materials and their Application (Cambridge Studies in Magnetism)
by Peter Campbell.
www.amazon.com/Permanent-Materials-Application-Cambridge-Magnetism/dp/0521566886/ref=sr_1_10?ie=UTF8&s=books&qid=1265912503&sr=1-10
For detailed guidance, see for example:
Permanent Magnet Materials and their Application (Cambridge Studies in Magnetism)
by Peter Campbell.
www.amazon.com/Permanent-Materials-Application-Cambridge-Magnetism/dp/0521566886/ref=sr_1_10?ie=UTF8&s=books&qid=1265912503&sr=1-10
Please login with a confirmed email address before reporting spam
Posted:
2 decades ago
Hi
I can only agree, this book is short, concise and gives an excellent introduction.
if you want to go deeper into the maths there is also, as complement the series from Springer (several volumes) starting by:
www.amazon.com/Magnetism-Fundamentals-Etienne-Tr%C3%A9molet-Lacheisserie/dp/0387229671/ref=sr_1_4?ie=UTF8&s=books&qid=1265958130&sr=1-4
have a nice reading
Ivar
I can only agree, this book is short, concise and gives an excellent introduction.
if you want to go deeper into the maths there is also, as complement the series from Springer (several volumes) starting by:
www.amazon.com/Magnetism-Fundamentals-Etienne-Tr%C3%A9molet-Lacheisserie/dp/0387229671/ref=sr_1_4?ie=UTF8&s=books&qid=1265958130&sr=1-4
have a nice reading
Ivar
Please login with a confirmed email address before reporting spam
Posted:
2 decades ago
Thank you both for your help and the book recommendations.
Please login with a confirmed email address before reporting spam
Posted:
2 decades ago
Hi all,
i am a permanent magnet supplier, and also learn something about magnet, espesionally in the sintered NdFeB magnet field. if there is any i can do,just contact me?
i am a permanent magnet supplier, and also learn something about magnet, espesionally in the sintered NdFeB magnet field. if there is any i can do,just contact me?