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Damping coefficients at OS-T: 1310 Direct Transient Dynamic Analysis of a Bracket

User: "Boris_22428"
Altair Community Member
Updated by Boris_22428

Hello Everybody

I am trying to do the transient analysis, similar to this OptiStruct 2020 tutorial:

OS-T: 1310 Direct Transient Dynamic Analysis of a Bracket.

image

I can’t understand in this tutorial, how exactly these two values were selected:

Uniform structural damping coefficient -  G_V1  (0.2)

And conversion to equivalent viscous damping  -  W3_V1 (300)

Modal analysis of this part, guides and references did not help much.

I would be very grateful for any tip, on this or similar example, the best, if also analytic solution will be available for verification.

Thank you in advance!

Boris

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