# Incorrect displacement results with shell edge load on shell composite model

**URL:** <https://prepomax.discourse.group/t/incorrect-displacement-results-with-shell-edge-load-on-shell-composite-model/3359>\
**Category:** General Questions\
**Created:** [March 21, 2026, 9:19am UTC](https://prepomax.discourse.group/t/incorrect-displacement-results-with-shell-edge-load-on-shell-composite-model/3359 "2026-03-21T09:19:54Z")\
**Posts on this page:** 1\
**Showing post:** 7

<div class="post-metadata">

**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [March 21, 2026, 3:59pm UTC](https://prepomax.discourse.group/t/incorrect-displacement-results-with-shell-edge-load-on-shell-composite-model/3359/7 "2026-03-21T15:59:08Z")

</div>

You could try relaxing the BCs - instead of fully fixing one edge, try applying sort of symmetry BCs (then you can fix one node in the vertical direction if needed). See this thread: [Cantilever beam with load at one end - #10 by CrisBab](https://prepomax.discourse.group/t/cantilever-beam-with-load-at-one-end/1241/10)

It’s also always good to solve 1/2, 1/4 or even 1/8 of the model if the geometry, supports, loads and evaluated responses allow the use of symmetry (with composites, you also have to make sure that the layup allows it).

---

_[View the full topic](https://prepomax.discourse.group/t/incorrect-displacement-results-with-shell-edge-load-on-shell-composite-model/3359)._