Can Solenoids Be Used as Shock Absorbers Through Electromagnetic Damping?

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    Shock Solenoid
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Discussion Overview

The discussion explores the feasibility of using solenoids as shock absorbers through the mechanism of electromagnetic damping. Participants consider various configurations and the implications of running current through solenoids in relation to shock absorption, oscillation, and magnetic interactions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose that running current through a solenoid can create a magnetic field that opposes a separate magnet, potentially dampening shock impulses.
  • Others argue that a separate magnet is unnecessary and suggest attaching the object directly to the solenoid core to achieve a cushioning effect similar to a spring.
  • One participant questions the necessity of changing the current direction, suggesting that it may not provide the desired repulsion effect for damping.
  • Another participant emphasizes that the cushioning effect would primarily come from the solenoid's coil acting as a spring rather than from electromagnetic forces.
  • There is a suggestion to explore the concept of active suspension systems as a related real-world application, noting the complexity involved.
  • A later reply references Lenz's Law, indicating a potential connection to the principles governing the discussed mechanisms.

Areas of Agreement / Disagreement

Participants express differing views on the necessity of a separate magnet and the effectiveness of using a solenoid directly attached to the object for shock absorption. The discussion remains unresolved with multiple competing perspectives on the approach and mechanics involved.

Contextual Notes

Participants highlight the complexity of real-world applications and the need for further exploration of the principles involved, such as Lenz's Law and the behavior of ferromagnetic materials within solenoids.

nnj
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Is it possible to use a solenoid as a shock absorber?

i.e run current through the solenoid, producing a magnetic field opposing a separate magnet attached to whatever it is receiving the shock impulse, thus dampening the effect according to the amount of current input.
 
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Edit* Nvm, I didn't see that you were wanting to run a current through the solenoid. This would be possible if you were able to link the current direction with the period of oscillations.
 
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nnj said:
Is it possible to use a solenoid as a shock absorber?

i.e run current through the solenoid, producing a magnetic field opposing a separate magnet attached to whatever it is receiving the shock impulse, thus dampening the effect according to the amount of current input.

You do not need the separate magnet.
Attach whatever is receiving the shock impulse directly to the solenoid core, to provide a cushioning effect like a spring.
A damper is still needed to reduce the amplitude of the oscillations.
 
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basically, if you have a solenoid with a ferromagnetic core, the core will tend to stay centered in the solenoid...then you can add a concentric shaft or rod (will need to be of a smaller diameter so the preference is still given to the core) and attache that to whatever you want to provide with shock absorption...
 
dydxforsn said:
Edit* Nvm, I didn't see that you were wanting to run a current through the solenoid. This would be possible if you were able to link the current direction with the period of oscillations.

I don't understand why a change in current direction is necessary. If I run a current so that the effective N pole of the solenoid points in the +z direction and place a magnet above it with the N pole pointing in the -z direction, a switch in current direction would switch the direction of the solenoids magnetic field and thus attract the magnet above it, not providing the repulsion effect desired for the dampening of the shock impulse.

You do not need the separate magnet.
Attach whatever is receiving the shock impulse directly to the solenoid core, to provide a cushioning effect like a spring.

Maybe I am interpreting this wrong but I don't see how this would work. By attaching the object receiving the shock impulse directly to the solenoid, the only cushioning effect provided would be from the coil of wires acting, literally, as a spring, not from any emf which is really what I'm going for. If I had a magnet, however, levitating above the solenoid, the opposing magnetic fields would provide a cushion of air, the magnet would oscillate up and down depending on external forces. Correct?
 
You do not attach the whatever to the solenoid, but to the core in the middle of it.

Does your solenoid attracts iron?
Have you try to put a pvc pipe inside your solenoid and piece of iron inside the pvc pipe?
What does it do? does it fall? does it stay?
...hope you are starting the get the picture now...also, refer to my previous post.
 
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Do you mean the application of Lenz's Law?
 

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