# Session 4: Vibrations

**URL:** <https://www.simscale.com/forum/t/session-4-vibrations/469>\
**Category:** Drone Workshop (2015)\
**Created:** [November 6, 2015, 3:47pm UTC](https://www.simscale.com/forum/t/session-4-vibrations/469 "2015-11-06T15:47:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![anon67859130](https://www.simscale.com/forum/letter_avatar/anon67859130/32/5_5575768a8748004e209b776fc1b2916d.png) [@anon67859130](https://www.simscale.com/forum/u/anon67859130)\
**Post date:** [November 6, 2015, 3:47pm UTC](https://www.simscale.com/forum/t/session-4-vibrations/469/1 "2015-11-06T15:47:16Z")

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Place for all discussions regarding the fourth session of the Drone Workshop organized by SimScale

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**Author:** ![debroy84863568](https://www.simscale.com/forum/user_avatar/www.simscale.com/debroy84863568/32/445_2.png) [@debroy84863568](https://www.simscale.com/forum/u/debroy84863568)\
**Post date:** [November 6, 2015, 10:14pm UTC](https://www.simscale.com/forum/t/session-4-vibrations/469/2 "2015-11-06T22:14:16Z")

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Hello,

I cant upload the the cad model of the fourth session into the platform. When I click the “import project level:1” button, the simscale platform open up in a new tab but no new cad model gets uploaded.  
What to do???

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**Author:** ![jousefm](https://www.simscale.com/forum/user_avatar/www.simscale.com/jousefm/32/34908_2.png) [@jousefm](https://www.simscale.com/forum/u/jousefm)\
**Post date:** [November 7, 2015, 10:11am UTC](https://www.simscale.com/forum/t/session-4-vibrations/469/3 "2015-11-07T10:11:56Z")

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Hi @anon67859130 ,

finished my setup for both Levels now and found two little mistakes.

In [Homework of Session 4 - Level 2](https://www.simscale.com/forum/t/step-by-step-tutorial-homework-of-session-4-level-2/468) in the Material assignment for the battery you wrote volumeOnGeoVolumes\_0 in the text but its volumeOnGeoVolumes\_1 in the picture. Might be a little bit confusing for some guys here. Got an error at the end for assigning two materials on one component but found the mistake fast 😃

The second one is also in [Homework of Session 4 - Level 2](https://www.simscale.com/forum/t/step-by-step-tutorial-homework-of-session-4-level-2/468) at the point where we define the acceleration of the **Arm right lower point acceleration**. **Component selection: y displacement** is wrong it is more likely **Component selection: y acceleration**.

But these are just peanuts. 🕶

Cheers,

Jousef