Three-dimensional packings with rotations

  • Authors:
  • F. K. Miyazawa;Y. Wakabayashi

  • Affiliations:
  • Instituto de Computação, Universidade Estadual de Campinas, Caixa Postal 6176, 13084-971 Campinas, SP, Brazil;Instituto de Matemática e Estatística, Universidade de São Paulo, Rua do Matão, 1010, 05508-090 São Paulo, SP, Brazil

  • Venue:
  • Computers and Operations Research
  • Year:
  • 2009

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Abstract

We present approximation algorithms for the three-dimensional strip packing problem, and the three-dimensional bin packing problem. We consider orthogonal packings where 90^@? rotations are allowed. The algorithms we show for these problems have asymptotic performance bounds 2.64, and 4.89, respectively. These algorithms are for the more general case in which the bounded dimensions of the bin given in the input are not necessarily equal (that is, we consider bins for which the length, the width and the height are not necessarily equal). Moreover, we show that these problems-in the general version-are as hard to approximate as the corresponding oriented version.