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Thread: Tuned mass damper demonstration - GIF

  1. #1
    Content Editor Altair's Avatar
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    Tuned mass damper demonstration - GIF

    Tuned mass damper demonstration. Tuned mass dampers are usually installed in tall buildings to reduce vibrations caused by wind or earthquake. The device is also used in automobiles, spacecraft, and power transmission.




    Previously:

    Motion compensating ship personnel transfer gangway - GIF
    720-ton tuned mass damper in skyscraper - GIF, video, and diagram
    Emergency building escape mechanism - GIF and video
    Last edited by Altair; 03-18-2019 at 10:16 PM.

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    In my Jr High School 7th grade science class, I did this demonstration for my science fair project. I managed to win 3rd place in the Los Angeles County science fair competition. Hard to believe that was 30 years ago!

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    Belated congratulations Inflight.
    First time I heard of a mass damper was when they tried them in Formula 1.
    To see it in action is really cool. Thanks Altair.
    Jim

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    Content Editor Altair's Avatar
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    Another setup:


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    [email protected] tonyfoale's Avatar
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    That looks like hydraulic dampers on the RHS model I do not see anything like a mass damper.

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    I agree with Tony. Seems like a shear panel or a simple diagonal brace could accomplish the same results as this demonstration.



    -= Inflight =-

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    [email protected] tonyfoale's Avatar
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    Quote Originally Posted by Inflight View Post
    I agree with Tony. Seems like a shear panel or a simple diagonal brace could accomplish the same results as this demonstration.
    Either of those would make it rigid. I think the demo is to illustrate the use of damping in buildings to reduce damage under earth quake like conditions. Flexibility is required for that but it needs to be damped. The title labelled it as a mass damper whereas it has the appearance of being fitted with hydraulic dampers and has the characteristics expected of overcritical viscous damping.


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