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三维随机多面体骨料生成和投放技术_杨新华
DOI :10.13245/j.hust.2009.08.009
37 8 () Vol.37 No.8
2009 8 J.Huazhong Univ.of Sci.Tech.(Natural Science Edition) Aug. 2009
杨新华 徐 瑞 陈传尧
(华中科技大学 土木工程与力学学院, 湖北武汉430074)
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:O345 :A :1 71-4512(2009)08-0099-04
Generation and packing of three-dimensional random polyhedron aggregate
Y ang X inhua X u R ui Chen Chuany ao
(College of Civil Engineering and Mechanics, H uazhong University
of Science and Technology, Wuhan 430074, China)
Abstract:An efficient technology for a random three-dimensional aggregate generation and packing is
presented, in w hich a polyhedron is created by extending an arbitrary fundamental triangular and re-
garded 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 w ith an actual grading curve.
Then the grading aggregates are randomly put in a given packing region one by one equiprobably, and
overlapping betw een 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, tw o examples are given.This technol-
ogy is very efficient and applicable for geometrically modeling concrete and asphalt mixture w ith high
content of grading aggregates.
Key words:three-dimensional random polyhedron;aggregate;packing ;random number generation;
convex control;sharpness judgment;overlapping
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