The melting behavior of 309-atom Ag-Rh bimetallic clusters of 6 different compositions, with decahedral shell-symmetric configuration, is investigated by using molecular dynamics simulation, based on Sutton-Chen many-body potential.
采用分子动力学方法,模拟研究了6种不同组合、具有正十面体壳对称构型、原子总数为魔幻数(309)的Ag-Rh双金属团簇的熔化过程。
Stable icosahedral Zn_(60)Mg_(30)Y_(10) quasicrystals was prepared by as-cast method.
实验结果发现:Mg Zn Y三元合金在室温冷却过程中,准晶相直接从液相形核、长大;当合金成分为Mg74Zn25Y1时,凝固组织为MgZn基体相、析出相为α Mg固溶体及二十面体Mg30Zn60Y10准晶相;当x(Y)为2%、3%时,合金中出现共析组织。
It showsthat the regular icosahedron should be the optimum shape of replacement for the biggest ball intumbling mills.
结果表明，正二十面体是取代大球的优选形状。
The paper analyzes the spherical triangle units getting from spherical triangle subdivision based on octahedron and icosahedron.
文章通过对基于正八面体和正二十面体球面剖分获得的球面三角单元进行分析,分析结果表明随着剖分层次的增加单元面积和形状变化趋于稳定,基于正二十面体的球面剖分与基于正八面体相比有更好的相似性;单元的变形程度与其到正多面体顶点的距离成负相关,而周长和面积变化成正相关;单元各属性比值所占的百分比与剖分层次无关,其较大峰值都分布在正多面体的顶点附近。
EARP supports several Plato polyhedrons, including tetrahedron, octahedron and icosahedron, and arbitary Voronoi spherical tessellations.
设计一种面向球面三角形的新的投影———等角比投影(EqualAngleRatioProjection,EARP),该投影包括平行以及同轴两种模式,支持正六面体、正八面体、正二十面体等柏拉图立体(PlatoPolyhedron)[1～3]以及任意Voronoi球面三角剖分。