if you're designing the damper, i'd agree that our current implementation of nonlinear dynamic won't work. you'd need something like composite modal damping where the material damping is handled individually so that you could determine the damping of the system that you're designing. is it possible in other tools? maybe...not sure. this seems like a pretty complicated problem considering that to get the actual damping behavior out of a part that you've modeled you'd actually have to tell it something about the material structure (atomically..etc) so that it could predict it. Hence why we have inputs for how they behave in general.
if you're implementing this into a system and want to see how it behaves, instead of doing all the modeling, if you knew how it behaved, you could just use a spring/damper.
just one other thought. you could make this a series of springs/dampers if you wanted to get an idea of how it worked all together. but then, it probably makes sense to do by hand vs with the software.
Thank you Jared,
I agree with all you said.