拡張個別要素法による三次元衝撃破壊解析

概要

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The finite element method has been used in impact fracture analysis. But, enormous labor is necessary for the mesh generation. When we analyze the large deformation and dynamic fracture, there are cases in which the remesh process is very difficult. Recently, it began to use the meshless analysis methods such as the Distinct Element Method and Smoothed Particle Hydrodynamics for the analysis of the impact phenomenon. In this research, we extended the two dimensional Extended Distinct Element Method (EDEM) to the three-dimensional EDEM. To verify validity of the three-dimensional EDEM, we analyzed impact fracture when a small sphere collided with the ceramic tile at very high speed and when a plaster cylinder fell freely in the floor. From numerical results, we confirmed that the behavior of impact fracture can be analyzed in detail by the three-dimensional EDEM.
一般社団法人日本機械学会の論文
2006-06-25