# Gear mesh stiffness

**URL:** <https://calculix.discourse.group/t/gear-mesh-stiffness/530>\
**Category:** Uncategorized\
**Created:** [April 8, 2021, 7:01pm UTC](https://calculix.discourse.group/t/gear-mesh-stiffness/530 "2021-04-08T19:01:02Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![jbr](https://avatars.discourse-cdn.com/v4/letter/j/ecccb3/32.png) [@jbr](https://calculix.discourse.group/u/jbr)\
**Post date:** [April 10, 2021, 2:28am UTC](https://calculix.discourse.group/t/gear-mesh-stiffness/530/4 "2021-04-10T02:28:43Z")

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> [@cfernandes](#):
>
> My main doubt relies on the change of the RF as the penalty coefficient increases.

I recall a topic on [contact stiffness setting](https://calculix.discourse.group/t/contact-stiffness-setting/455/3). Based on that discussion, I would expect the torque evaluated on the pinion rotation node not to be constant and will depend on the penalty coefficient. Are you using linear elastic materials?

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