# Setting of Displacement Upper Limit for Specific Boundary in Linear Elastic Analysis

**URL:** <https://community.freefem.org/t/setting-of-displacement-upper-limit-for-specific-boundary-in-linear-elastic-analysis/3719>\
**Category:** General Discussion\
**Created:** [January 31, 2025, 5:52am UTC](https://community.freefem.org/t/setting-of-displacement-upper-limit-for-specific-boundary-in-linear-elastic-analysis/3719 "2025-01-31T05:52:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Ayataka](https://avatars.discourse-cdn.com/v4/letter/a/848f3c/32.png) [@Ayataka](https://community.freefem.org/u/Ayataka)\
**Post date:** [January 31, 2025, 5:52am UTC](https://community.freefem.org/t/setting-of-displacement-upper-limit-for-specific-boundary-in-linear-elastic-analysis/3719/1 "2025-01-31T05:52:31Z")

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Dear FF++ developpers and users.

I am interested in setting upper displacement limits for certain boundaries for linear elastic bodies.  
Does anyone know how to do this?  
I considered adopting the penalty method, but it did not work.

```
+int1d(Sh,Gamma)(1e10*(u1-u1Max)*tu1)

for example, where u=[u1, u2], tu=[tu1, tu2], real u1Max=10.0

```

Sincereley  
Ayataka