Calculating Force on a Solenoid Plunger

In summary, to calculate the force on a solenoid plunger, you would use the equation (B^2 * A) / (2*u), where B is the flux density at the end of the plunger, A is the cross-sectional area of the plunger, and u is the magnetic permeability of a vacuum. The worst case scenario would be using the maximum air gap, and the best case scenario would be using no air gap.
  • #1
Kalagaraz
28
0
I'm trying to figure out how to calculate the actual physical force on a solenoid plunger. I.E what kind of load it can pull or push.

So if I setup a magnetic circuit and calculate the flux going through it at maximum airgap, am I right to assume that the force is equal (B^2 * A) / (2*u) where B is the flux density at end of plunger, A is the cross sectional area at end of plunger, and u is the magnetic permeability of a vacuum? Obviously force would increase as the air gap closes, but I really only need to know worst case scenario and best case scenario (no air gap).

B would be the flux divided by cross sectional area at end of plunger?

Thanks.
 
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  • #2
Yes, that is the correct equation for calculating the force on a solenoid plunger. B would be the flux density at the end of the plunger divided by the cross-sectional area of the plunger. To find the worst case scenario, you would use the maximum air gap, and to find the best case scenario, you would use no air gap (i.e. when the plunger is completely closed).
 

What is a solenoid plunger?

A solenoid plunger is a movable metal rod or shaft inside a solenoid coil that is used to convert electrical energy into mechanical motion.

How does a solenoid plunger work?

When an electric current is passed through the solenoid coil, it creates a magnetic field which attracts and pulls the plunger towards it. When the current is turned off, the magnetic field dissipates and the plunger returns to its original position.

What factors affect the force on a solenoid plunger?

The force on a solenoid plunger is affected by various factors such as the number of turns in the coil, the strength of the current passing through the coil, the diameter of the coil, and the material of the plunger and core.

How can the force on a solenoid plunger be increased?

The force on a solenoid plunger can be increased by increasing the number of turns in the coil, using a stronger current, increasing the diameter of the coil, and using a ferromagnetic material for the plunger and core.

What are some applications of a solenoid plunger?

Solenoid plungers have various applications in everyday devices such as door locks, electric doorbells, and automatic transmission systems in cars. They are also used in industrial equipment such as valves, actuators, and clutches.

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