ABSTRACT
The golf ball-barrier collision has proven to be too complicated to be characterized successfully by conventional coefficients of restitution and spin restitution, even if the coefficients are velocity-dependent and angle-dependent. An alternative is to use the parameters of an ordinary differential equation model of the transient viscoelastic deformation of a ball during impact. A five-parameter, nonlinear model of normal impact of solid balls has been successful in representing ball-barrier collisions over a wide range of approach velocities. A new, six-parameter version successfully represents wound balls in normal impact. With the addition of a torsion model, oblique impact can be simulated.
