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Magnetostrictive generator harvester
Posted 18 juin 2024, 04:45 UTC−4 Electromagnetics, MEMS & Piezoelectric Devices, Structural Mechanics Version 6.1 3 Replies
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hello, I have a magnetostrictive generator and I have a problem with the material itself. The main problem would be the fact that the magnetostrictive material does not induce a magnetic field in my coil. The only induced magnetic field is the one from the permanent magnet. Normally I should have somewhere 12 V. Can someone look over the simulation and give me some advice or explain what the problem is?
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George,
There is no piezomagnetic domain in the solid node.
Cheers Edgar
-------------------Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
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George,
There is no piezomagnetic domain in the solid node.
Cheers Edgar
Okay but after put a solid node ,i need two voigt matrix .Do you can tell me how to define two matrix ?Compliance matrice,Voigt notatio and Piezomagnetic coupling matrix ,Voigt notation
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Yes, it seems that in that case of nonlinear magnetostriction the piezomagnetic domain is not required as the multiphysics coupling is doing the job. Keep in mind that the Villari effect is not generating a magnetic field in the magnetostrictor. The mechanical strain modifies the magnetic properties of the material and this modulates the DC bias field. Without the bias field, no magnetic field is generated.
-------------------Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com