Simulating Resistance of Compliant Spring

e0325771 — Wed, 17 Feb 2021 05:07:06 GMT

Hello,

I'm trying to test out some compliant spring designs using the Event Simulation feature, and was wondering if it is possible to get a graph of a force vs displacement curve through the simulations.
Basically to get a Hooke's Law kind of graph to show how much force the spring is pushing back with at a given distance.
Is such a simulation possible in F360?

Re: Simulating Resistance of Compliant Spring

MichaelT_123 — Sun, 01 Feb 2026 10:46:59 GMT

Hello, hello, hello,

Typical springs are designed as linear force/displacement devices, thus :

Force = +- SpringConstant * Displacement.

The SpringConstant, as the name suggests, is a constant and displacement-independent.

Can the SpringConstant be calculated/simulated from the spring geometry and its material properties?

For typical mortals, it would be very hard to do it reliably. Many analytical formulas have been developed for typical geometries. The numerical FEA is an option; however, the nature of the internal matrix representation is prone to accumulating rounding errors, which can affect the solution. The real material properties are also the big unknown.

Nevertheless, there is a pragmatic solution (in most scenarios) that requires some sort of scale and a calliper-like device (or professional spring dynamometer). A piece of paper and a pencil would also be handy. The gathered data table (or the single scalar) can be used in the F360 spring model using the userParameter approach.

Some time ago, I presented such a simple model. Consider checking:

https://forums.autodesk.com/t5/fusion-design-validate-document/spring/m-p/12628798

and the referenced links.

Hello, hello, hello,

MichaelT

Re: Simulating Resistance of Compliant Spring

TheCADWhisperer — Sun, 01 Feb 2026 18:09:40 GMT

@e0325771

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

topic Re: Simulating Resistance of Compliant Spring in Fusion Design, Validate & Document Forum

Simulating Resistance of Compliant Spring

Re: Simulating Resistance of Compliant Spring

Re: Simulating Resistance of Compliant Spring