Abstract
In this paper, we simulated a motion of soft-matter body in consideration of fluid motions inside and outside the body. This is important to investigate a motion of an amoeba or an earthworm regarded as a soft-matter robot. There are many researches and developments of the bipedal walking robot or the portable mechanism by using a wheel. However, some reports paid attention to the displacement technique by peristalses, such as ameboid movement of a protozoan, and earthworm, as a robot which can move in the inside of fluid or slight space. We used the model of a circular flexible object including the internal fluid which has a different quality from external fluid. We report the result of the simulation
