# Strange result for a plate in bending with shells elements

**URL:** <https://prepomax.discourse.group/t/strange-result-for-a-plate-in-bending-with-shells-elements/1267>\
**Category:** General Questions\
**Created:** [November 20, 2023, 5:35pm UTC](https://prepomax.discourse.group/t/strange-result-for-a-plate-in-bending-with-shells-elements/1267 "2023-11-20T17:35:00Z")\
**Posts on this page:** 1\
**Showing post:** 20

<div class="post-metadata">

**Author:** ![ANYS](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/anys/32/7737_2.png) [@ANYS](https://prepomax.discourse.group/u/ANYS)\
**Post date:** [November 21, 2023, 10:49pm UTC](https://prepomax.discourse.group/t/strange-result-for-a-plate-in-bending-with-shells-elements/1267/20 "2023-11-21T22:49:13Z")

</div>

If one tries to solve this benchmark constraining rotations of the curved lips it fails.  
It is the same problem but x 500  
Impossible.

> [@Open source FEM – shell calculations](https://prepomax.discourse.group/t/open-source-fem-shell-calculations/1048):
>
> Found this post on the net which I think is not properly solved. It is based on NAFEMS LE3: HEMISPHERICAL SHELL linear elastic benchmark. Prepomax result is 185.1mm compared to expected result 185mm. [HEMISPHERICAL SHELL WITH POINT LOADS.pmx](https://prepomax.discourse.group/uploads/short-url/vkXrtmnmnPdyBVkkYnB6eeFh8z2.pmx) (1.5 MB)

---

_[View the full topic](https://prepomax.discourse.group/t/strange-result-for-a-plate-in-bending-with-shells-elements/1267)._