Abstract
This paper is a report on the equivalent mass of many kinds of grain and powder. We observe the experiment of the real-scale silo, and compare with the results obtained with the small-scale silo. From the results of this experiment, we can observe the vibration characteristics for the first and second normal modes and make a new model for analysis of the vibration of silos. Appling the transfer matrix methods for the flexural vibrations of a beam including the effect of shear deflection and rotary inertia, and applying the spring transfer matrix taking into consideration the effect of longitudinal stiffness and rotational stiffness, we can discover the vibrational characteristics of the silo with the foundation. By applying this method, we can obtain the equivalent mass.
