Title
Quasi-phi-functions and optimal packing of ellipses
Abstract
We further develop our phi-function technique for solving Cutting and Packing problems. Here we introduce quasi-phi-functions for an analytical description of non-overlapping and containment constraints for 2D- and 3D-objects which can be continuously rotated and translated. These new functions can work well for various types of objects, such as ellipses, for which ordinary phi-functions are too complicated or have not been constructed yet. We also define normalized quasi-phi-functions and pseudonormalized quasi-phi-functions for modeling distance constraints. To show the advantages of our new quasi-phi-functions we apply them to the problem of placing a given collection of ellipses into a rectangular container of minimal area. We use radical free quasi-phi-functions to reduce it to a nonlinear programming problem and develop an efficient solution algorithm. We present computational results that compare favourably with those published elsewhere recently.
Year
DOI
Venue
2016
10.1007/s10898-015-0331-2
J. Global Optimization
Keywords
Field
DocType
Quasi-phi-functions,Object continuous rotations,Non-overlapping,Distance constraints,Ellipse packing,Mathematical model,Nonlinear optimization
Mathematical optimization,Normalization (statistics),Packing problems,Nonlinear programming,Ellipse,Mathematics
Journal
Volume
Issue
ISSN
65
2
0925-5001
Citations 
PageRank 
References 
7
0.53
14
Authors
3
Name
Order
Citations
PageRank
Yu. G. Stoyan1947.91
Aleksandr Pankratov2172.46
T. Romanova3657.04