Damping parameter in elasticSolve

[skaal]

Hi all,

after quite some search and trial-and-error I got a transient simulation using elasticSolve to finally work. However, to do so, I have to ramp up the Damping for the material definition quite severely:

Code: Select all

Material 1
  Name = "Material 1"
  Youngs modulus = 5e6
  Density = 938
  Poisson ratio = 0.35
  Damping = 1e10
End 

The main problem is that, so far, I have no idea, what that means. I also fail to find a hint on this specific parameter in the documentation. While there is a Rayleigh damping for stressSolve and shellSolve, there is no such setting (documented) for elasticSolve.
Could someone please give me a hint where to search or start digging?

Thanks!

[kevinarden]

The damping input is the same in elasticsolver as stresssolver

https://github.com/mrkearden/damping

viewtopic.php?p=20818&hilit=damping#p20818

[skaal]

Thank you!
That was a good starting point and very helpful.

Is there something like a database or a catalogue for damping parameters? Or do I always have to estimate those myself?

[kevinarden]

I do not know of a database or a catalogue for damping parameters, it is generally based on testing or experience.