Mu-metal cylinder shield for the static magnetic field shielding
QuickField simulation example
This is an example of the mu-metal cylinder shielding simulation, performed with QuickField software. Example is prepared by Professor James R. Claycomb as a part of the webinar QuickField for Electromagnetic Shielding Applications.
Problem Type
Axisymmetric problem of DC magnetics.
Geometry
Given
Relative magnetic permeability of mu-metal μ = 10000,
External field B = 0.5 T.
Problem:
Determine the shielding factor for axial and transverse field direction.
Solution
Two problems were simulated: axisymmetric (mu_metal_rz.pbm) for the axial magnetic field and plane-parallel (mu_metal_transverse.pbm) for the transverse magnetic field. Uniform external magnetic field was defined by assigning non-zero vector magnetic potential on the simulation area boundary.
Results
Magnetic field strength distribution in case of the axial magnetic field
Magnetic field strength distribution in case of the transverse magnetic field
| Magnetic flux density inside the cylinder shield | |
|---|---|
| Axial field | 78 mT (16%) |
| Transverse field | 0.56 mT (0.1%) |
- Video: Mu-metal cylinder shield for the static magnetic field shielding
See more in QuickField for Electromagnetic Shielding Applications webinar.
- View simulation report in PDF
- Download simulation files (files may be viewed using any QuickField Edition).