Magnetic field in a semi-cut solenoid

In summary, the conversation discusses the magnetic field of a semi-cut solenoid with a partially cut covering and soft core iron. The number of windings in the area decreases considerably and it is assumed that the windings on either side of the cut are equal. It is questioned whether the solenoid will form two separate magnets or have a consistent magnetic field. The use of 3D FEA tools such as COMSOL is suggested for accurate calculations.
  • #1
The_Thinker
146
2
Im just curious as to how the magnetic field would be for a semi cut solenoid as shown in the diagram below.

The Solenoid covering is partially cut and the soft core iron in the solenoid is also cut and the number of windings in the area decrease considerbly..

The winding on either side of the cut is assumed to be equal..

Now at the cut part below the slightly cut iron core and the cut covering of the solenoid... what would be the magnetic field?

Would A, the solenoid form 2 magnets and behave like 2 separate magnets on either side?

or Would B the solenoid forms just one consistant magnetic field..

Which of the 2 would happen? or would something happen?

Anyone willing to help me out?

I would be great full.. :)
 

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  • #2
Wow, none of the regular solenoid calculators will work with that geometry. I think you'll have to use 3D FEA tools such as COMSOL.
 

1. What is a semi-cut solenoid?

A semi-cut solenoid is a type of electromagnetic coil that has been cut in half lengthwise. This creates a gap in the middle of the coil, where the magnetic field is weaker compared to the ends of the coil.

2. How does a semi-cut solenoid create a magnetic field?

A semi-cut solenoid creates a magnetic field when an electric current is passed through the coil. The current creates a magnetic field that flows through the coil and creates a north and south pole at the ends of the coil. This magnetic field is strongest at the ends of the coil and weaker in the middle where the coil is cut.

3. What factors affect the strength of the magnetic field in a semi-cut solenoid?

The strength of the magnetic field in a semi-cut solenoid is affected by the number of turns in the coil, the amount of current flowing through the coil, and the length and diameter of the coil. The strength of the magnetic field is also affected by the presence of any nearby magnetic materials.

4. How is the direction of the magnetic field in a semi-cut solenoid determined?

The direction of the magnetic field in a semi-cut solenoid is determined by the right-hand rule. If you point your right thumb in the direction of the current flowing through the coil, your fingers will curl in the direction of the magnetic field.

5. What are some practical applications of a semi-cut solenoid?

One common application of a semi-cut solenoid is in doorbells, where the electromagnetic coil creates a magnetic field to attract a metal hammer and produce a ringing sound. Semi-cut solenoids are also used in magnetic door locks, relays, and other electromechanical devices.

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