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- W2897798781 abstract "The subject matter of the article is the solution of the problem of optimal packing of concave polyhedra in a cuboid of minimal volume. The goal is to construct a mathematical model of the problem under consideration and to develop a solution method. The task to be solved are: to develop tools for mathematical modeling of the interaction of two concave non-oriented polyhedra; to construct a mathematical model of the problem of packing concave non-oriented polyhedra in a cuboid of minimal volume; to investigate the peculiarities of the mathematical model; to develop an effective method of solution and implement its software. The methods used are: the phi-function technique, the internal point method. The following results are obtained. Using the phi-function for two convex non-oriented polyhedra, a phi-function for two concave non-oriented polyhedra is constructed. On the basis of the phi-function, an exact mathematical model of the packing problem for concave polyhedra that allow simultaneous continuous translations and rotations is constructed. The mathematical model is represented as a non-linear programming problem. The properties of the constructed mathematical model are analyzed and a multi-stage approach based on them is proposed, which makes it possible to obtain a good locally optimal solution of the problem posed. Since working with polyhedra is an important to determine the optimal clustering of two objects, one of the stages of the proposed approach is to solve the problem of pairwise clustering of polyhedra. A numerical example demonstrating the effectiveness of the proposed approach is given. Conclusions. The scientific novelty of the obtained results consists in the following: an exact mathematical model of the packing problem of concave non-oriented polyhedra is constructed in the form of a nonlinear optimization problem and a multi-stage approach is proposed that allows obtain a good locally optimal solution of the problem." @default.
- W2897798781 created "2018-10-26" @default.
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- W2897798781 date "2018-05-27" @default.
- W2897798781 modified "2023-10-01" @default.
- W2897798781 title "CLUSTER PACKING OF CONCAVE NON-ORIENTED POLYHEDRA IN A CUBOID" @default.
- W2897798781 doi "https://doi.org/10.20998/2522-9052.2018.1.03" @default.
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