343 円錐形容器と粒状体の挙動解析に関する検討

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We study on the behavior of the granular bodies in a circular-cone-shaped vessel and transportation performance of a circular-cone-shaped vessel. In this paper, we call the vessel, that consists of two cylinders with different diameter conected by a circular cone such as a Hopper, as a circular-cone-shaped vessel. We assume that, granular bodies are made of elasto-plastic materials such as lead. The elasto-plastic behavior at the impact is modeled as a bilinear type force-displacement characteristics. Based on this assumption, we analyze the behavior of each sphere using Discrete Element Method (DEM). Here, the relationship between the relative velocity and coefficient of restitution for the elasto-plastic behavior at the impact is decided by the impact experiment using two spheres. In numerical analysis, we vary the initial position and the taper angle and study the effect on the transportation performance of a circular-cone-shaped vessel, i.e. the ejection time and stoppage. Finally, we conduct 3D analysis and study the difference between 2D analysis and 3D analysis. And in 3D analysis, we also study the effect of initial position of granular bodies.
一般社団法人日本機械学会の論文
2011-09-05