Magnetic systems can replace mechanical springs by using repulsive forces between magnets arranged in pairs or arrays. Compared to traditional springs, magnetic "springs" offer:
When multiple magnets are strategically combined, it is possible to enhance, shape, and stabilize the magnetic spring behavior.
When like poles of two magnets (north–north or south–south) face each other, they repel. The repulsive force depends on:
Single magnet pairs already produce strong repulsion at close distances. Multiple magnet arrays can:
For simple pairs of small, face-to-face magnets:
Where:
At larger distances, force drops off rapidly, approximately following:
Rotating one magnet relative to another can:
Use case: Rotating cams or collars to activate/disarm magnetic force.
By sliding magnets laterally across each other:
Use case: A sliding sleeve or guide rail that repositions magnets to alter stiffness.
You can combine magnets of different:
…to create force curves that move components through multiple stable states as they interact.
Use case: Triggered motion systems or passive mechanical logic (e.g., component A moves, triggering B magnetically).
Using multiple magnets not only replaces mechanical springs — it enables new types of passive mechanisms.
By carefully combining repulsion, alignment, and mechanical movement, you can:
With smart design, magnetic fields give you powerful, contactless control over motion and force.