How to design a plastic snap
How to design a plastic snap
(OP)
How to design this a plastic snap. Does anyone have a parametric mode
l?

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RE: How to design a plastic snap
What is a parametric mode?
You need to design a spring element, taking advantage of many plastics' flexibility.
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JHG
RE: How to design a plastic snap
RE: How to design a plastic snap
there is nothing about these snap-fit. Are about simple snap-fit
RE: How to design a plastic snap
In models that means an FEA to determine factors such as how much contact pressure there is, how much strain there is, and from the strain, determine if the material will break from the resulting stress. There's no formula for any of those.
That picture doesn't look like a good snap fit solution - it appears to require far too much distortion to deflect without breaking.
Take a bunch of things that have snap fits apart and see how they work. You can measure to see the required distortion and measure the force required to produce that distortion to get an idea of the material properties involved.