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I have recently discovered flexure springs (see image below), and I am interested in using one in an amateur project I am building.

However, I would prefer if I am able to adjust the "stiffness" of the flexure spring, to allow the spring to bear different loads.

Despite extensive searching online, I have not found a flexure spring design that provides flexible or adaptable stiffness.

Is it possible to have a flexure spring, the stiffness of which, can be adjusted?

enter image description here

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  • $\begingroup$ Do you mean torsional spring? $\endgroup$
    – ShadowMan
    Jul 29 '19 at 2:11
  • $\begingroup$ @ShadowMan No, torsional springs are quite different from flexure springs (see image attached in my question). $\endgroup$ Jul 29 '19 at 18:13
  • $\begingroup$ I saw your picture. So then do you load that spring in a direction perpendicular to it's plane? $\endgroup$
    – ShadowMan
    Jul 29 '19 at 18:21
  • $\begingroup$ Yes, that's correct $\endgroup$ Jul 29 '19 at 18:44
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    $\begingroup$ You could look into adding additional of these units either in series or parallel and device some way of making them easy to take out. $\endgroup$
    – John
    Feb 5 at 19:43
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In your case the adjustable stiffens can be archived by modifying the shape from the spring. If you use different stiffens and allow some blocking this can be achieved. See screenshot. enter image description here

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