Abstract
In recent years there have been many studies on animations that take account of interactions between objects and natural objects such as water. Among others, some researchers propose deformation methods for ground surfaces when they are in contact with objects. But these methods cannot represent granular material spattering at an impact of an object. In this paper, we propose an algorithm which can represent the animation of granular material spattered by objects. In our proposed method, the ground surface is deformed by using the distinct element method which calculates the motion of each grain by collisions and reactions among grains. The deformation of the ground surface and spattering of granular material are represented by this method. Moreover our method can calculate the motion of objects taking account of forces excerted on the objects by granular material. In order to demonstrate the validity of our method, we show a result of calculating spattering sand when a rigid object falls onto a sand surface.
