抄録
There are many products manufactured by powder compacting presses. In the past studies, the structural analyses of the product were performed by Finite Element Method (FEM). In these analyses, cavities which were occurred in the injection could not be taken into consideration. Namely, the analyses were performed under the assumption that the products were packed homogeneously. On the other side, the simulations of powder process were often performed by the Discrete Element Method (DEM). Accordingly, the structural analysis taking into account the particle condition could not be performed practically. Thereat, a new structure analytical method, which is referred to Finite Deformation theory based Particle Method (FD-PM), was developed to introduce the packing condition into the structural analyses. In this method, the particle location, i.e., random packing, could be simulated by the DEM. This location is used in the FD-PM as the calculation points. Numerical simulations of a cantilever oscillation were performed to investigate the adequacy of the FD-PM. Effects of the particle location on the structural analyses were investigated in this study. The oscillation cycle obtained from the simulations was compared with the theoretical one. The oscillation cycles were in good agreement between the simulations and the theoretical results. It is concluded that the FD-PM can simulate the oscillation of the cantilever composed of the randomly packed powder accurately.
