How to estimate the correct value of "Damping Constant" for Flexible Beams in Simscape

Hello,

Reading the Matworks info I notice that damping matrix is defined as proportional by the Damping Constant to the stiffness matrix (the relative damping increase at high frequency).

My question is how to choose the proper value of Damping Constant for different materials.

Thank you and best regards

Answer 1

[Steve Miller]

The Damping Matrix parameterization method for the Reduced Order Flexible Solid lets you specify individual damping values for the interface nodes and deformation modes. This matrix can be computed using the mass and stiffness matrices that you obtain from finite element method software. To scale these for specific materials, you can look up tables for the damping ratio by material and use that to calculate/scale the damping matrix.

--Steve