Lub tog raj kheej Neodymium Magnet 6 * 13mm - Cov Qauv Dawb Muaj | Fullzen

Xam cov magnetic teb (
$�$

B) nyob ib ncig ntawm lub cylindrical hlau nplaum tuaj yeem ua tau zoo heev, nyob ntawm qhov sib nqus sib nqus hauv lub tog raj kheej. Ntawm no, kuv yuav piav qhia txog cov ntaub ntawv yooj yim uas peb muaj lub tog raj kheej sib nqus sib nqus nrog nws cov hlau nplaum sib txuas nrog lub tog raj kheej lub axis. Qhov no feem ntau hu ua "longitudinally magnetized cylinder."

Magnetic teb (
$�$

B) sab nraum lub tog raj kheej sib nqus sib nqus raws nws lub hauv paus axis tuaj yeem kwv yees siv cov qauv rau thaj tsam hauv lub solenoid. Qhov kev kwv yees no xav tias lub tog raj kheej ntev npaum li nws txoj kab uas hla. Cov mis yog:

$�=�\cdot �$

B = μ⋅M

Qhov twg:

• 
  $�$

  B yog lub zog sib nqus ntawm ib qho chaw sab nraum lub tog raj kheej (hauv teslas, T).

• 
  $�$

  μ yog qhov permeability ntawm cov khoom (ib txwm, feem ntau
  $�0$

  μ0 rau lub tshuab nqus tsev lossis cua, sib npaug
  $4\; x\; 10–7$

  4π × 10-7 T m/A).

• 
  $�$

  M yog qhov sib nqus ntawm lub tog raj kheej (magnetic moment per unit volume, in A/m).

Rau ib tug uniformly magnetized lub tog raj kheej,
$�$

M tuaj yeem xam raws li:

$�\; =\; �\; tag\; nrho\; lub\; tog\; raj\; kheej$

M = Vcylinder Mtotal

Qhov twg:

• 
  $�\; tag\; nrho$

  Mtotal yog tag nrho lub sijhawm sib nqus ntawm lub tog raj kheej (hauv A m²).

• 
  $�\; lub\; tog\; raj\; kheej$

  Vcylinder yog qhov ntim ntawm lub tog raj kheej (hauv m³).

Nco ntsoov tias qhov no yog ib qho yooj yim scenario thiab tej zaum yuav tsis yog tus sawv cev ntawm cov magnetic teb faib nyob rau hauv ntau nyuaj. Yog tias cov hlau nplaum tsis sib xws, lossis yog tias lub tog raj kheej qhov ntev tsis loj dua li nws txoj kab uas hla, cov kev suav yuav ua kom zoo dua qub thiab tej zaum yuav xav tau cov lej lossis cov tswv yim analytical.

Txhawm rau kom tau txais txiaj ntsig zoo dua, koj yuav tsum siv txoj hauv kev zoo tshaj plaws xws li cov lej simulations siv cov ntsiab lus finite tsom xam lossis cov kev tshuaj ntsuam xyuas uas xav txog cov khoom sib nqus ntawm cov khoom thiab qhov tseeb magnetization faib nyob rau hauv lub tog raj kheej.

Cov lus hais tias qhov chaw sib nqus yog xoom hauv lub tog raj kheej tej zaum yuav yog kev nkag siab yuam kev lossis kev ua kom yooj yim. Nyob rau hauv dav dav, lub magnetic teb nyob rau hauv ib tug uniformly magnetized lub tog raj kheej tsis yog xoom. Txawm li cas los xij, nyob ntawm cov xwm txheej tshwj xeeb thiab kev xav, muaj cov xwm txheej uas cov hlau nplaum hauv lub tog raj kheej tuaj yeem ua rau tsis muaj zog lossis nthuav tawm qee yam khoom uas yuav ua rau nws zoo li qhov chaw tsis muaj teeb meem.

Nov yog ob peb qhov xwm txheej uas yuav ua rau kev nkag siab tias qhov chaw sib nqus yog xoom hauv lub tog raj kheej:

1. Tiv thaiv
2. Uniform Magnetization

Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov hlau nplaum hauv lub cylindrical hlau nplaum yuav nyob ntawm ntau yam, nrog rau kev faib cov hlau nplaum, cov hlau nplaum cov duab, cov khoom siv, thiab cov kev cuam tshuam sab nraud xws li cov hlau nplaum nyob ze los yog kev tiv thaiv. Feem ntau, lub zog hlau nplaum tuaj yeem raug xam thiab simulated raws li cov xwm txheej no, tab sis qhov chaw tsis zoo li yuav yog xoom hauv lub tog raj kheej sib nqus sib nqus.

Yog lawm, tuaj yeem muaj qhov sib nqus hauv lub tog raj kheej hollow, yog tias lub tog raj kheej muaj qee hom kev sib nqus. Lub xub ntiag thiab cov yam ntxwv ntawm lub magnetic teb nyob rau hauv lub hollow lub tog raj kheej nyob ntawm seb yam xws li cov qauv magnetization, cov khoom siv, thiab cov geometry ntawm lub tog raj kheej.

Cov hlau nplaum sab hauv thiab sab nraud ntawm lub cylindrical hlau nplaum nyob ntawm ntau yam, nrog rau cov qauv hlau nplaum, cov khoom siv, thiab cov geometry ntawm lub tog raj kheej. Cia peb xav txog ob peb yam xwm txheej:

1. Uniformly Magnetized Lub tog raj kheej
2. Radially Magnetized Lub tog raj kheej
3. Demagnetized Hollow Lub tog raj kheej
4. Magnetic Shielding Lub tog raj kheej

Cov no yog cov lus piav qhia yooj yim, thiab tus cwj pwm tiag tiag ntawm cov hlau nplaum tuaj yeem ua tau zoo heev nyob ntawm cov xwm txheej tshwj xeeb thiab kev xav. Nyob rau hauv kev xyaum, qhov sib nqus teb faib yog feem ntau soj ntsuam siv cov qauv zauv los yog simulation software uas yuav siv sij hawm mus rau hauv tus account cov ncauj lus kom ntxaws cov yam ntxwv ntawm cov hlau nplaum thiab nws ib puag ncig.