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Nick_W1-Visitor
1-Visitor
September 12, 2017
Question

Damping coefficient (%)

  • September 12, 2017
  • 2 replies
  • 2335 views

In the attached assemblies, I'm trying to understand what to use for the damping coefficient.  It plays a large role in the results, but I'm not sure if it's a calculated value, and if it is, I'm not sure how to calculate it.  Any help with damping coefficents in general would be appreciated.

 

Nick W.

    2 replies

    C
    Chris321-Topaz I
    21-Topaz I
    September 13, 2017

    It is not a calculated value. It should come from a measurement via test.

    E
    ehaenen1-Visitor
    1-Visitor
    November 9, 2017

    Hi Nick

     

    I find it to cumbersome to unpack the zip.

    Maybe you can just insert a few pictures.

    I assume you want to use a damping coefficient in dynamic response analysis.

    For a steel plate hanging on a wire (actualy not supported) the damping is very low. If you were to hit it, it will ring "forever". In that case the damping is about 0.001%.

    For a normal mechanical assembly using screws and bolts and/ or spotwelds typical damping values vary between 3 and 5%.

    If that's not accurate enough for you, you'll have to perform measurements.

    Hope this helps.

    Kind regards

    Erik

     

     

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