I've come across a 4x4 stiffness matrix for a radial bearing with rotational stiffness. The stiffness matrix would look like
Kxx Kxy Kxϴ KxΨ Kyx Kyy Kyϴ KyΨ Kϴx Kϴy Kϴϴ KϴΨ KΨx KΨy KΨϴ KΨΨ
I'm sure that unit of the terms
Kxx Kxy Kyx Kyy are
Kϴϴ KΨΨ is
My question is what are the units of the other rotational stiffness terms
Kϴx Kϴy KϴΨ KΨx KΨy KΨϴ Kxϴ KxΨ Kyϴ KyΨ
N-m/rad or something else?