Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 27, 2023 - September 29, 2023
The purpose of this study is to elucidate the effect of the number of cells in the cell structure by structural analysis using the finite element method. Numerical experiments were conducted using the FEM solver RADIOSS (Explicit method). The analytical model consists of upper and lower rigid walls, cell structure. The cell structure was meshed using shell elements. Compression simulations were performed by applying a constant velocity of 20 m/s (1000/s) to the upper rigid wall. The cell structure model used in this study has a total of 25 patterns (5 cell number types). With an increase in the cell number, an averaging of compressive properties and a decrease in the sudden increase or decrease in stress due to changes in the microcellular structure were observed. In the plateau region, there was almost no effect of increasing the number of cells. On the other hand, the slope of the elastic response increased with increasing cell number, and the amount of strain that initiates densification tended to decrease slightly with increasing cell number.
