【摘要】 提出了一种高效的随机多面体骨料生成和投放技术.通过对基三角形的延拓生成系列多面体,并采用凹凸控制和尖锐判断进行筛选,根据给定级配曲线循环生成不同粒径的骨料,然后在规定的投放区域等概率投放,借助ANSYS的布尔分割运算避免骨料重叠,实现给定级配多面体颗粒复合材料的几何建模.最后给出了两个实例.该技术特别适合带有给定级配和高骨料含量的混凝土和沥青混合料的三维几何建模.更多还原

【Abstract】 An efficient technology for a random three-dimensional aggregate generation and packing is presented,in which a polyhedron is created by extending an arbitrary fundamental triangular and regarded as a aggregate after passing through convex control and sharpness judgment,and a number of random aggregates are generated circularly by this method in accordance with an actual grading curve.Then the grading aggregates are randomly put in a given packing region one by one equiprobably,and overlapping between nearby aggregates is avoided by the help of Boolean partition operation in ANSYS,so that a random three-dimensional geometrical model of polyhedron particular composites with a given gradation can be successfully established.Finally,two examples are given.This technology is very efficient and applicable for geometrically modeling concrete and asphalt mixture with high content of grading aggregates.更多还原