Abstract
This paper presents experimental results on particle behavior in dense phase inside a vertically vibrated container under microgravity. Glass particles of 56μm in average diameter were vibrated in a rectangular container with frequencies between 50 and 250Hz. Parabolic flights of aircraft were performed to achieve 20 seconds of microgravity. Particles formed a laminated structure under microgravity: thin particle layers overlapped and thin air layer was interposed between them. With the increase in frequency, the number of layers increased and the distance between them decreased. However, the structure of layers was not affected by loading masses and acceleration amplitude.
