On the repeatability of octree-based rheology Mass-Spring-Damper model

In this paper, we ascertain repeatability (reappearance) of shape deformation of the octree-based particle model representing an arbitrary rheological object. The repeatability (reappearance) of shape deformation is carefully checked by parameter calibration and deformation evaluation based on two kinds of pushing operations. The Mass-Spring-Damper (MSD) model as the octree-based particle model flexibly generates a residual displacement. Our approach is based on computer calculation under calibration of physical parameters. The calibration quality strongly depends on data structure of rheological object. It is done by GA (Genetic Algorithm) minimizing the sum of differences between computational virtual and experimental real shapes. Finally, concerning to calculation time and shape precision, we also see that our octree-based model is better than our voxel-based model.