Method of evaluating energy loss of golf ball

摘要

At step 1, a golf ball model is divided into a large number of elements composed of a large number of nodal points in the form of meshes; a physical property of a material for the golf ball is inputted; a simulation is executed by an analysis based on a finite element method, assuming that a golf club head collides with the golf ball; and a strain amount generated in the golf ball model at the time of the collision is computed. At step 2, a stress and a strain component of each element of the golf ball model and coordinate values of the nodal points of each element are outputted; and a value of a stress and a strain of each of six components of each element are computed momently. At step 3, the relationship between the stress and the strain of each component of each element is found from the value of the stress and the strain of each of the six components; and energy loss values of each element are computed. At step 4, the energy loss value is computed for all elements included in the golf ball model; the computed energy loss value is read by a visualizing software; and the energy loss of the golf ball model is visualized.