/sci/ - Science & Math

i read a thing about coconuts being a reasonable analog to human skulls, at least as far as blunt impacts with small objects.
https://pubmed.ncbi.nlm.nih.gov/25909916/

but, to how far does that extend? like, if i were to hit a coconut with a hammer, and it breaks, could i reasonably say that a human skull would probably break in a similar scenario? i can't find great information about this, because i don't think coconuts are used in studies as analogs for skulls. they'd just use some expensive bone substitute, or whatever.
is there something better than a coconut, which is reasonably accessible, that could serve as a stand-in for a skull in trauma analysis?