# Comparative Analysis: Ansys vs. FEniCSx \[Displacement in Linear Elasticity\]

**URL:** <https://fenicsproject.discourse.group/t/comparative-analysis-ansys-vs-fenicsx-displacement-in-linear-elasticity/13398>\
**Category:** General\
**Tags:** dolfinx\
**Created:** [January 24, 2024, 2:38pm UTC](https://fenicsproject.discourse.group/t/comparative-analysis-ansys-vs-fenicsx-displacement-in-linear-elasticity/13398 "2024-01-24T14:38:52Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![dokken](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/dokken/32/1560_2.png) [@dokken](https://fenicsproject.discourse.group/u/dokken)\
**Post date:** [January 25, 2024, 3:16pm UTC](https://fenicsproject.discourse.group/t/comparative-analysis-ansys-vs-fenicsx-displacement-in-linear-elasticity/13398/15 "2024-01-25T15:16:42Z")

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> [@jaribeiro](#):
>
> This is an insightful observation, thanks @dokken. At the moment, I’ve been assuming they are affine quadrilaterals, which could affect the displacement results differently.

The quadrilaterals in your grid does not look affine (not all of them are parallelograms as far as I can tell), which changes the quadrature degree required.

You can use any of the quadrature rules defined in basix, or use your own,  
See:[How to choose a specific quadrature rule? - #6 by dokken](https://fenicsproject.discourse.group/t/how-to-choose-a-specific-quadrature-rule/10527/6)  
or [Total number of gauss point - #2 by dokken](https://fenicsproject.discourse.group/t/total-number-of-gauss-point/8904/2)

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