# Spring + Pendulum with damping

**URL:** <https://calculix.discourse.group/t/spring-pendulum-with-damping/2429>\
**Category:** Uncategorized\
**Created:** [October 6, 2024, 10:47pm UTC](https://calculix.discourse.group/t/spring-pendulum-with-damping/2429 "2024-10-06T22:47:08Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![fgr](https://avatars.discourse-cdn.com/v4/letter/f/f4b2a3/32.png) [@fgr](https://calculix.discourse.group/u/fgr)\
**Post date:** [October 15, 2024, 7:56am UTC](https://calculix.discourse.group/t/spring-pendulum-with-damping/2429/22 "2024-10-15T07:56:43Z")

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@Disla , thanks , of course your right, first I solved the equation where spring & damper were attached to each other and then I was got too sleepy when I split the distance into L1 & L2 🙂

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**Author:** ![Disla](https://yyz2.discourse-cdn.com/free1/user_avatar/calculix.discourse.group/disla/32/3548_2.png) [@Disla](https://calculix.discourse.group/u/Disla)\
**Post date:** [October 21, 2024, 10:13pm UTC](https://calculix.discourse.group/t/spring-pendulum-with-damping/2429/23 "2024-10-21T22:13:30Z")

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One of the possible applications of the model is Tunned mass dampers like the one in the Taipei 101 skyscraper. I added one to a steel tower to find the big difference under seismic actions.Very cool.

![Tuned mass damper](https://global.discourse-cdn.com/free1/uploads/calculix/original/2X/6/64e5d4b51c2e5efbd87825c6e0ebe50cfa190d9d.gif)

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