stick-slip – into territory I know better. Musical instruments. I had to explore atomic level then earthquake level to see if I was missing anything — and I was. Earthquake level proved that yes, the tiny advance wave that starts the whole thing is still a mystery. Not what I wanted to hear but at least I’m not nuts.
Now to violin strings and what is the optimum structure for maximum stick-slip. Usually stick-slip is a bad thing that needs to be minimized / dampened (it breaks things) but in certain applications it’s a good thing.
It’s a human pulling a bow and not self-initiated but what’s self-initiated anyway?
ah, now THIS is a different set of parameters than earthquakes or atomic force spectrometry or hopf bifucation.
Funny thing is, I know enough now about stick-slip that I could make a self-bowing violin using an earthworm style bow. Physics is physics.
But what amazes me is that the same physical process that violinists master is also what makes earthquakes tremble and allows us to see atoms.
Johannes Aichele’s 2019 PhD paper
“Elastic waves in complex conditions: From
the onset of rupture to viscous dispersion
in foams”, had all the keywords I was looking for:
“Acoustic radiation” stick-slip slow-wave
I’d just learned about “Acoustic Radiation” from TRIZ Effects database when searching how to SEPARATE a FIELD
and “Surface Acoustic Wave” came up, which looked a LOT like the “slow wave” that proceeds disaster with a stick-slip event – or a violin playing.
Hoping it covers the “onset of rupture” portion as that’s what my main concern is: prior to oscillation part.