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主泵泵壳锻件锻造成形工艺研究 被引量:1
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作者 高润哲 刘凯泉 刘敬杰 《大型铸锻件》 2022年第1期1-3,共3页
针对“华龙一号”主泵泵壳超大异形结构的特点,制定了仿形锻造成形工艺方案,运用Forge软件对拔正八方过程进行数值模拟,优化了成形工艺参数,在实现多向变形的同时也得到了较好的正八方外形,泵壳锻件的试制成功证明了该工艺可行。
关键词 主泵泵壳 正八方 偏心冲孔
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A Research for a Division of Regular Polyhedron by Rhombic Dodecahedron
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作者 Jun Hee Mun Jong Youll Park 《Journal of Mathematics and System Science》 2014年第8期569-573,共5页
Abstract:A space-filling polyhedron is a polyhedron which 'tile' space, analogous to the way of certain polygons tiled the plane. The cube is the unique space-filling platonic solid. If we make line connections the... Abstract:A space-filling polyhedron is a polyhedron which 'tile' space, analogous to the way of certain polygons tiled the plane. The cube is the unique space-filling platonic solid. If we make line connections the center with the vertices in the certain cube, the cube is divided into six pyramids. And if we glued six pyramids to the faces of the cube, we obtain a 'rhombic dodecahedron'. Since cubes are packing a space, rhombic dodecahedra are also space-filling polyhedra and a rhombic dodecahedron is divided into two regular tetrahcdra and one regular octahedron. In this study, we present how rhombic dodecahedron can be split into tetrahedra and octahedron. In this process, we can research a variety of divisions of regular polyhedron. 展开更多
关键词 Rhombic dodecahedron CUBE TETRAHEDRON octahedron.
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