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Force on armature in soleniod if it is a magnet

Discussion in 'Mathematics and Physics' started by ccurtis, Oct 29, 2017.

  1. ccurtis

    ccurtis Active Member

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    I'm wondering if the force on solenoid armature is greater if the armature is a magnet instead of iron or ferrite, all else being equal and how to quantify any difference.
     
  2. cowboybob

    cowboybob Well-Known Member Most Helpful Member

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    Yes, it is.

    But not easy to quantify...

    For a solenoid without a PM armature, see this "Recent Trends in Engineering and Technology" paper.

    For a solenoid with a PM armature, see this "applied sciences" paper, starting at the end of page 3 ("Biot-Savart law") and running through page 5.

    Have fun :cool:.
     
  3. alec_t

    alec_t Well-Known Member Most Helpful Member

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    The force will be modified, but whether it is increased or decreased will depend on the relative polarities and geometry of the magnet and the solenoid field.
     
  4. dave

    Dave New Member

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  5. ccurtis

    ccurtis Active Member

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    Thanks cowboybob! I only scanned the link about the magnet armature, but it answers the first part of my question and certainly leads me to the second part. My search didn't find anything on the topic.

    alec-t., granted the plunder would have to installed in the proper orientation for increased force.
     

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