# Snap-fit contact snagging problem

**URL:** <https://calculix.discourse.group/t/snap-fit-contact-snagging-problem/2277>\
**Category:** Analysis issues\
**Created:** [May 16, 2024, 2:49pm UTC](https://calculix.discourse.group/t/snap-fit-contact-snagging-problem/2277 "2024-05-16T14:49:09Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![JuanP74](https://avatars.discourse-cdn.com/v4/letter/j/b5a626/32.png) [@JuanP74](https://calculix.discourse.group/u/JuanP74)\
**Post date:** [May 16, 2024, 6:29pm UTC](https://calculix.discourse.group/t/snap-fit-contact-snagging-problem/2277/17 "2024-05-16T18:29:57Z")

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Calculated K should be `0.5*(E_stiff+E_less_stiff)/L_char`, in your case is 2000 MPa/0.234mm = 8547 N/mm^3 MUCH MUCH less the hard value

 ![imagen](https://global.discourse-cdn.com/free1/uploads/calculix/original/2X/d/deb18489cb2d4512e05917e69121c87b9d85f81d.png)

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