In order to be able to use this module import it like this:

#or assign it to a shorter name
import as ell, B), B), Ehat, r1_maj, r1_min, r2_maj, r2_min, alpha=0)

Calculates the Hertz force according to an approximate solution found in Zheng2013: Contact Forces between Viscoelastic Ellipsoidal Particles. alpha is the angle between the principal axes of curvature in the contact plane between the bodies., Rhat, overlap, Fcorr=1), B), r1_min, r2_maj, r2_min, alpha=0), B)