MPS法による弾性構造体の動的解析

概要

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This study provides dynamic analysis of solids by MPS (Moving Particle Semi-implicit) method. A two-dimensional code based on particle interaction model of MPS method is developed to simulate elastic behaviors, large deformation and fracture in solids. Meshes are not needed in the MPS method, so that fracture as well as large deformation can be analyzed without mesh distortion. We propose a new particle method for dynamic simulation of elasticity. The equation of motion in elastic solids that is characterized by material density, Young's modulus and Poisson's ratio is discretized to particle interaction between neighboring particles. Rotation of particles is considered for the conservation of angular momentum in the discretized formulation. We had good results about not only conservation of momentum in physical quantities but also reciprocal action of displacements and stress distributions in elastic models. Limit of numerical stability is obtained. Large deformation and fracture of various solids are simulated. The results show good agreement with experiments.
一般社団法人日本機械学会の論文
2005-01-25